Kev tshawb fawb txog kev tsim cov yas ntawm titanium alloy

Nyob rau hauv xyoo tsis ntev los no, titanium alloys tau siv dav vim lawv qhov qis dua, lub zog siab, zoo corrosion tsis kam, thiab kev ua tau zoo tsawg. Txawm li cas los xij, vim nws cov yas tsis zoo, kev ua haujlwm siab, thiab kev ua haujlwm nyuaj, tam sim no titanium alloy ua tshuab feem ntau yog kub xovxwm. Txij li thaum titanium alloys ntawm qhov kub thiab txias yog qhov ua rau oxidation, hnav thiab lwm yam teeb meem, kev ntsuas sib xws kuj tseem xav tau. Cov pwm kub resistant pwm thiab cov khoom siv cua sov kuj xav tau cov nqi ntau dua ntawm kev ua haujlwm. Yog li ntawd, kawm txog txoj kev loj hlob thiab kev loj hlob yav tom ntej tiam sis ntawm cov thev naus laus zis tseem ceeb rau kev tsim cov yas ntawm titanium alloys yog qhov tseem ceeb heev rau kev txhim kho cov ntawv thov qib ntawm titanium alloys.

⑴ Isothermal txoj kev siv tshuab

Cov txheej txheem isothermal tuaj yeem txhim kho cov yas thiab cov khoom ntws ntawm daim ntawv, txhim kho qhov sib xws ntawm cov hlau ntws, thiab txo qhov deformation siab. Qee tus neeg tau thov siv isothermal forming technology (ib txoj hauv kev uas cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob cov qauv. Lub deformation kub ntawm titanium alloys Nws yog rhiab heev. Piv txwv li, thaum lub deformation kub poob los ntawm 920 degree mus rau 820 degree, lub deformation kuj ntawm titanium alloy yuav luag ob npaug, thiab nws superplastic deformation quab yuam tsuas yog hais txog 1/30 rau 1/10 ntawm dog dig dov. Ntawm lawv, isothermal forming thiab superplastic forming yog txawv, tab sis cov nyhuv ntawm isothermal forming ntawm txo cov deformation tsis kam ntawm cov khoom thiab kev txhim kho cov plasticity ntawm cov khoom yog tsis tseem ceeb raws li cov superplastic txoj kev. Lub ntsiab kom zoo dua ntawm superplastic siab ua yog hais tias cov khoom muaj peev xwm ua tau heev deformation. Txawm li cas los xij, ntau cov txheej txheem tsis xav tau 100% txog 200% deformation. Feem ntau cov hlau forging piv yog 5, uas txhais tau hais tias lub deformation mus txog 75%. Txhawm rau kom ntseeg tau tias qhov ua tau zoo ntawm qhov chaw, nws tsis tas yuav tsum tau ua kom pom tseeb. Ntxiv mus, cov ntxhib lamellar microstructure muaj kev ruaj ntseg zoo dua tiv thaiv qaug zog tawg nthuav dav. Txawm hais tias isothermal forming thev naus laus zis tuaj yeem txhim kho qhov tsis ruaj khov ntawm cov ntaub ntawv, nws yog ib qho kev sib koom ua ke ntawm kev siv tshuab, thiab nws yog ib qho nyuaj rau lav tias cov khoom zoo yuav tsis muaj qhov tsis xws luag hauv zos, xws li kev tsim cov khoom hauv zos, thiab lwm yam. yog tsim nyob rau hauv ib cheeb tsam yog tias muaj qhov tsis xws luag, qhov teeb meem tsis xws luag yuav daws tsis tau tom qab, uas yuav cuam tshuam qhov zoo ntawm tag nrho cov khoom titanium alloy. Qhov teeb meem no kuj tau dhau los ua ib qho teeb meem uas yuav tsum tau kov yeej hauv kev txhim kho thev naus laus zis yav tom ntej.

⑵ Creep txoj kev siv tshuab

Creep deformation txhais tau hais tias ntawm qhov kub thiab txias, tom qab cov ntawv hlau yog deformed nyob rau hauv qhov kev txiav txim ntawm lub cuab yeej thiab pwm kom tau txais cov zoo tagnrho cov duab, qhov kub thiab load nyob twj ywm unchanged, thiaj li hais tias kev ntxhov siab nyob rau hauv lub workpiece, thiab elastic strain hloov. mus rau cov yas yas mus tas li kom txog rau thaum cov kev ntxhov siab seem thiab lub caij nplooj ntoos hlav rov qab raug tshem tawm, thiab cov khoom ua haujlwm zoo tshaj plaws tau txais tom qab txias kawg. Thaum lub sij hawm creep deformation txheej txheem, creep tsav quab yuam yog siv kev ntxhov siab. Raws li kev nkag mus, qhov elastic strain txo qis, ua rau txo qis hauv kev ntxhov siab thiab txo qis hauv kev siv zog. Qee cov kws tshawb fawb tau taw qhia tias cov txheej txheem kub tensile creep yog ib hom tshiab ntawm nyias-walled titanium alloy composite txheej txheem. Cov txheej txheem no siv cov txheej txheem cua sov xws li cov cua sov ua kom sov kom sov nyias-walled hlau los yog profiles rau qhov kub kub sib sau thiab ces ncab thiab khoov lawv. Raws li daim ntawv kawg yog tsim, qhov kub thiab txias tseem nyob tas li thiab cov khoom nkag mus rau hauv tensile kev taw qhia tawm tsam pwm nto. Qhov no ua rau txo qis kev ntxhov siab nyob rau hauv lub workpiece tsim thiab kev ntxhov siab hauv online. Qhov seem kev ntxhov siab yog txo, yog li txo qhov springback ntawm qhov chaw thiab txhim kho qhov raug tsim. Kev tshawb fawb raws li txoj cai, txheej txheem txheej txheem, cov cuab yeej tseem ceeb, kev siv thev naus laus zis thiab qhov zoo thiab qhov tsis zoo ntawm cov txheej txheem tshiab yog qhia. Thaum kawg, daim ntawv thov kev cia siab ntawm kev kos duab kub-creep composite forming technology yog prospected. Qee cov kws tshawb fawb tau taw qhia tias titanium alloys feem ntau siv rau hauv kev siv aerospace, xws li nqa airframes, vim lawv cov khoom siv zoo heev thiab corrosion thiab hnyav hnyav. Txawm li cas los xij, titanium alloys tsis yooj yim rau kev tsim ntawm chav tsev kub. Yog li ntawd, qhov kub kos bending creep txoj kev yog siv nyob rau hauv titanium alloy profile txoj kev los txhim kho formability thiab txo springback. Lub hauv paus ntsiab lus ntawm kub stretch bending thiab creep forming yog ua ib theem kev ntxhov siab los ntawm kev ua kom lub workpiece nrog pwm ntawm ib tug xaiv nyob rau lub sij hawm tom qab lub kub stretch dabtsi yog khoov theem. Qhov no tso cai rau cov txiaj ntsig ntawm cov kev ntxhov siab uas tsis tshua muaj nyob thiab qhov tsawg kawg nkaus springback, suav nrog cov cuab yeej pheej yig thiab rov ua tau zoo. Tus qauv Arrhenius tau siv los ua tus cwj pwm ntawm tus cwj pwm creep, thiab tus qauv tseem ceeb ntawm cov txheej txheem kub tensile bending creep deformation tau tsim nyob rau hauv ABAQUS. Finite element simulation cov txiaj ntsig qhia tau hais tias qhov kev ntxhov siab seem tau txo qis heev thaum lub sij hawm so kev ntxhov siab, thiab qhov kev ntxhov siab uas tsis tshua muaj tshwm sim hauv qhov me me. Cov kwv yees qhov txiaj ntsig springback yog qhov pom zoo nrog cov txiaj ntsig kev sim. Qee cov kws tshawb fawb tau taw qhia tias kev nkag siab lossis kev ntxhov siab yog lub ntsiab lus tseem ceeb los txo qhov kub sib sau springback ntawm titanium alloy daim hlau. Txog tam sim no, qhov sib txawv thiab kev sib txuas ntawm ob qhov xwm txheej no tsis tau tshawb pom meej. Nws tau ua qhov ntsuas kub kub luv luv thiab kev ntsuas kev ntxhov siab ntawm Ti6Al4V alloy. Lub microstructure ntawm cov hlau tau pom los ntawm kev siv lub tshuab hluav taws xob xa hluav taws xob. Qhov cuam tshuam ntawm qhov kub thiab txias, kev ntxhov siab thiab lub sijhawm ntawm kev nkag siab thiab kev ntxhov siab so tus cwj pwm tau kawm raws li. Cov kev sib raug zoo thiab qhov sib txawv ntawm ob qhov tshwm sim tau muab piv los ntawm kev sib tw nkag-lub sij hawm thiab qhov sib txawv ntawm cov sij hawm sib raug zoo. Cov txiaj ntsig tau pom tias atomic diffusion nyob rau hauv qhov kub thiab txias tsis tshua muaj kev tswj hwm tus cwj pwm creep, thiab dislocation plam thiab nce hauv qhov kub thiab txias siab tswj tus cwj pwm creep. Tus cwj pwm so kev ntxhov siab feem ntau yog tswj los ntawm dislocation creep. Tus cwj pwm kev ntxhov siab tau kwv yees los ntawm cov ntaub ntawv creep pom zoo nrog cov txiaj ntsig kev sim.

⑶ Springback tswj thiab pre-optimized precision yas molding tshuab

① Tswj springback los ntawm ntau yam qauv

Vim tias titanium alloy cov ntaub ntawv muaj qhov loj deformation kuj, tsis tshua muaj elastic modulus, thiab muaj zog anisotropy, tswj springback yog qhov tseem ceeb hauv titanium yas ua. Nws cuam tshuam rau qhov loj thiab qhov tsis zoo ntawm cov khoom. Txog tam sim no, peb tau siv zog ntau los txo qhov kev ua yuam kev los ntawm springback. Finite element simulation ua ke nrog optimization cov tswv yim yog feem ntau siv txoj kev. Ib txoj hauv kev zoo tau tsim los txo cov caij nplooj ntoos hlav thaum lub caij txias ncab ntawm TC1 dav hlau txheej. Nyob rau hauv lub optimization qauv, ib tug lej ntawm cov kev ntxhov siab sib txawv xam los ntawm finite lub ntsiab yog tsim los ua ib qho kev qhia ntawm rebound lub zog, es tsis txhob ntawm implicit rebound tsom xam, thiab ib tug multi-kob noob caj noob ces algorithm yog siv (rau genetic algorithms, lub hom phiaj muaj nuj nqi yog ntau -extreme tus nqi muaj nuj nqi, nrhiav lub zos qhov pom kev taw tes los ntawm hypothesis,) kom nrhiav tau qhov zoo tshaj plaws loading tsis. Lub optimized tsim ntawm cov txheej txheem tsis zoo txo ​​tus nqi ntawm springback thiab txhim kho txoj kev raug. Cov txiaj ntsig kev tshawb fawb muab kev taw qhia rau kev tswj xyuas springback thiab thev naus laus zis hauv cov txheej txheem ntawm cov ntawv hlau. Ib tug neeg tau thov cov qauv tsim tshwj xeeb raws li tus kheej tsim TA18 alloy (Ti-3AI-2.5V) cov lej tswj (NC) rotating raj dabtsi yog khoov. Los ntawm kev txheeb xyuas ntau yam ntawm cov kauj ruam los ntawm kauj ruam, kev sib raug zoo ntawm lub kaum sab xis, cov khoom siv thiab lub kaum sab xis tau tsim. . Qee cov kws tshawb fawb tau siv Hill's anisotropy criterion los kwv yees lub zog elastic ntawm kev lag luam ntshiab titanium (CP-Ti) qhov chaw thaum lub sijhawm khoov thiab tsim cov txheej txheem. Qee cov kws tshawb fawb ntseeg tias lub caij nplooj ntoos hlav ntawm TC4 dabtsi yog khoov rods nyob ntawm qhov loj ntawm cov khoom nruab nrab ntawm thaj chaw uas tseem nyob hauv lub xeev elastic, uas nyob rau sab hauv ntawm cov txheej txheem thiab cov duab geometric xws li bending vojvoog, dabtsi yog khoov lub kaum sab xis, thiab txoj kab uas hla / tuab ntawm cov khoom siv khoov. . Qee cov kws tshawb fawb siv cov txheej txheem txheeb cais los suav cov kev sib raug zoo ntawm lub kaum sab xis ntawm lub kaum sab xis thiab cov txheej txheem thaum lub sij hawm hydroforming txheej txheem, uas muab ib txoj hauv kev zoo rau kev tsim cov cuab yeej tsim thiab cov kws tshaj lij kom txo cov sij hawm tsim khoom. Qee cov kws tshawb fawb tau kawm txog qhov cuam tshuam ntawm qhov kub thiab txias ntawm cov nyiaj them rov qab ntawm CP-Ti cov ntawv. Cov txiaj ntsig tau pom tias thaum qhov kub thiab txias qis, qhov kev tiv thaiv kuj tseem txo qis.

② Prefabricated qhov chaw thiab pwm optimization txoj kev

Prefabricated qhov chaw thiab pwm optimization tuaj yeem txo lub cev ua yuam kev, uas yog qhov tseem ceeb heev rau qhov ze-daim ntawv. Rov qab simulation tshuab yog dav siv hauv kev cuam tshuam molding tsim. Qee cov kws tshawb fawb tau npaj ib kauj ruam rov qab ua kom zoo dua txoj hauv kev los txhim kho qhov pib ntawm TA15 alloy. Txoj kev tshawb nrhiav pom tias qhov kev xaiv ntawm qhov kho qhov chaw siv los txiav txim siab qhov khoom ua kom zoo yog lub hauv paus ntawm kev ua kom zoo, thiab isometric offset txiav txim siab qhov tseeb thiab kev ntseeg siab ntawm kev ua kom zoo.

⑷ Cov cuab yeej tswj tsis raug

Titanium alloys nquag tawg thaum lub caij txias, xws li TA18 titanium alloy rotational dabtsi yog khoov, TCI titanium alloy ntshiab titanium stretch forming, ib qho point incremental forming, thiab lwm yam. Cov txiaj ntsig kev tshawb fawb pom tau hais tias cov tuab ntawm cov yas tsim ua haujlwm ntawm titanium alloy nplooj ntawv txo qis nrog qhov tob zuj zus, tsis txhob tawg thiab ncab ntau dhau thaum lub sijhawm tsim. Lub zog tom qab txuas ntxiv yuav ua rau muaj kev pheej hmoo ntawm kev puas tsuaj los ntawm qhov txias txias ntawm TCI titanium alloy. Optimizing lub zog ua ntej thiab tom qab ncab tuaj yeem zam kev tawg. Qhov nrawm nrawm ntawm qhov ntsuas tus nqi cyclic superplasticity kuaj ntawm Ti-15-3 qhia tau hais tias kev tawg tuaj yeem tshwm sim qhov twg qhov deformation tsis sib xws. Kev tawg tuaj yeem zam tau los ntawm kev siv qhov txo qis ntawm 30% mus rau 40% thawj zaug.

⑸ Kub spinning tshuab

Spin forming yog hais txog kev sib hloov pub mov ntawm ib lossis ntau lub rotating lub log ua haujlwm ntawm thawj lub tiaj tiaj tiaj tiaj, maj mam ua cov ntaub ntawv thiab cov rotating mandrel haum ua ke, thiab thaum kawg tau txais ib qho hollow rotary lub cev nrog cov phab ntsa nyias nyias. Txoj kev tsim. Vim hais tias lub log yog ib nrab loaded thaum lub sij hawm spinning txheej txheem, lub load yog ho txo ​​piv rau cov tsoos sheet hlau stamping. Spinning yog ib daim ntawv hloov tau yooj yim txoj kev uas tsim nyog rau tsim qhov kawg-tsim qhov chaw ntawm complex rotating qhov chaw, los yog ze-tiav qhov chaw, xws li tapered qhov chaw, tej yam yooj yim qhov chaw, thiab lwm yam. Raws li titanium alloys, magnesium alloys, thiab lwm yam, spinning yuav tsum tau ua nyob rau hauv tej yam kub thiab txias, uas yog hu ua kub spinning. Vim tias nyob rau tib qhov kub thiab txias, cov khoom sib txawv lossis cov khoom siv tib yam ntawm qhov kub thiab txias kuj muaj qhov sib txawv ntawm lawv cov khoom siv tshuab. Yog li ntawd, kev tswj qhov kub thiab txias yog qhov tseem ceeb heev hauv kev kub spinning.

⑴ Mechanisms thiab cov cai hauv cov qauv siv lead ua evolution

Cov qauv siv lead ua ntawm titanium alloys yog tsim los ntawm kev ua haujlwm tsis tu ncua los yog kev sib hloov ntawm grain orientation ntawm ntxaib thaum deformation. Cov evolution ntawm cov qauv deformation yog heev rhiab heev rau strain, kub thiab deformation hom, uas cuam tshuam rau lub tom ntej microstructural evolution thiab coj txhua yam khoom ntawm titanium alloys, xws li lub zog, qaug zog lub neej, thiab corrosion kuj. Cov qauv deformed feem ntau yog tsim thaum lub caij txias txias thiab cuam tshuam los ntawm cov hlau alloy, cov qauv pib thiab kev ua tsis tau. Qee cov kws tshawb fawb tau kawm txog kev txhim kho ntawm cov qauv ntse hauv zos ntawm IMI834 alloy thiab pom tias cov qauv no tuaj yeem txo qhov qaug zog lub neej. Qee cov kws tshawb fawb tau ua cov kev sim compression los kawm txog cov qauv kev hloov pauv ntawm CP-Ti ntawm qhov kub thiab txias. Lawv pom tias ob qho tib si nplua-grained thiab coarse-grained basal dav hlau nyob rau hauv cov qauv deformed zoo li tig los ntawm lawv thawj qhov taw qhia mus rau lub kaum sab xis ntawm 45 degree. Qee cov kws tshawb fawb tau kawm txog qhov cuam tshuam ntawm kev laus ib leeg, tsis tshua muaj kub, kub siab ob chav laus, kev laus cua sov tus nqi thiab lwm yam txheej txheem ntawm kev ntxhib los mos evolution ntawm Ti-10V-2Fe-3Al tom qab thermal deformation. Lawv pom tias thawj theem qauv hloov zuj zus ntawm cov kab me me, thaum cov qauv tuaj yeem tau txais ntawm qhov loj deformations. Tsis tas li ntawd, cov qauv tuaj yeem tsim los ntawm recrystallization, uas yog hu ua recrystallized qauv. Qee cov kws tshawb fawb tau pom tias kev hloov pauv hauv kev hloov pauv ntawm kev ntxhib los mos ntawm CP-Ti thaum lub sij hawm recrystallization txheej txheem yog tshwm sim los ntawm theem nrab recrystallization. Qee cov kws tshawb fawb tau kawm txog kev hloov pauv ntawm cov qauv recrystallized ntawm Ti-35Nb-7Zr-5Ta alloy thaum kub dov. Thaum lub thickness txo mus rau ntau tshaj 90%, lawv pom gradient qauv. Lawv ntseeg tias dynamic recrystallization tshwm sim los ntawm qhov hnyav tsis sib xws ntawm qhov chaw thiab qhov chaw ua rau cov qauv no.

⑵ Mechanisms thiab cov cai hauv morphological evolution

Microstructural morphology yog rhiab heev rau kev ua tsis tau xws li kub, lim, lim tus nqi, hom kab mob, thiab txoj kev kho cua sov. Lawv kev sib xyaw ua ke yog ib qho morphology uas cuam tshuam rau cov khoom siv ntawm titanium alloys. Qhov ntim feem, qhov loj me, thiab qhov sib piv ncaj qha txiav txim siab txog microstructural morphology ntawm titanium alloys. Cov theem hloov pauv muaj cov khoom zoo thiab siv dav hauv aerospace, kev ua tshuaj lom neeg, marine thiab marinetime, tsheb thauj mus los, thiab tshuaj. Tsis tas li ntawd, lub microstructure muaj lub sijhawm zoo dua thiab lub zog ntau dua li cov qauv microstructure equiaxed, tab sis nws cov khoom qaug zog yog qis dua. Vim yog cov nplej loj loj ntawm theem, kev sib koom ua ke ntawm kev sib tshuam, tawg toughness, ntev thiab creep lub zog, thiab lwm yam, ua rau txuas ntxiv rau hauv kev khoov kev taw qhia thiab disperse qhov kev ntxhov siab nyob ib ncig ntawm lub pob txha. Txawm li cas los xij, vim tsis muaj kev txwv ntawm ib theem, cov nplej coarsening yooj yim tshwm sim, uas tuaj yeem ua rau muaj qhov tsis zoo ntawm cov khoom tensile. Tsis ntev los no, qee cov kws tshawb fawb tau txais qhov tshiab peb hom microstructure, suav nrog txog 15%, 50% mus rau 60% lamellar thiab kev hloov pauv matrix, uas qhia txog kev ua haujlwm siab thiab qis qis qis, siab creep qaug zog sib cuam tshuam lub neej, siab tawg toughness thiab kwv yees li txheej txheem forging. kub kev pab cuam. Qee cov kws tshawb fawb tau kawm txog kev cuam tshuam ntawm kev faib tawm ntawm microstructure morphology nyob rau hauv kev tsim ntawm cov khoom nyob ze. Lawv pom tias microstructural morphology ntawm TA15 titanium alloy hloov nrog cov degree ntawm deformation thiab ua cov kauj ruam. Transformed hais nrog thawj theem thiab lamellar theem yog tsim los ntawm me me deformations thaum ua. Thiab tag nrho cov kev hloov pauv matrix nrog cov teeb meem lamellar theem yog tsim los ntawm thawj qhov loj deformation. Nyob rau hauv lub thib ob kauj ruam, lub microstructural morphology ntawm transformed matrix thiab ua tiav sphere raug tsim los ntawm nruab nrab thiab loj deformations, raws li.

⑶ Kev tsim kho cov qauv qauv

Txoj hauv kev sib txawv hauv lub xeev siv qee qhov me me ntawm cov kev hloov hauv lub xeev los piav txog nws qhov tshwm sim, thiab tau siv dav los simulate microstructural evolution ntawm titanium alloys thaum lub sij hawm ua thermal. Qee cov kws tshawb fawb tau npaj cov qauv kev sib tw physics los kwv yees qhov kev ntxhov siab thiab qhov hloov pauv loj ntawm ob-theem titanium alloys. Nyob rau hauv tus qauv, nws yog assumed tias tag nrho cov kev ntxhov siab muaj xws li thermally activated stress thiab non-thermal stress, qhov twg thermally activated stress yog piav los ntawm tus qauv Kock-Mecking. Kev ntxhov siab uas tsis yog-thermal hais txog cov teebmeem yog sawv cev los ntawm ob-parameter internal lub xeev hloov thiab grain loj tus nqi. Txoj cai sib xyaw thiab kev tshawb xav superposition yog siv los qhia cov txiaj ntsig ntawm theem a thiab ntauwd theem kev ntxhov siab. Cov kev kwv yees ntawm cov qauv no tau pom zoo nrog kev sim cov txiaj ntsig ntawm titanium alloys. Qee cov kws tshawb fawb kuj tau npaj cov qauv zoo sib xws rau ob-theem TA6 alloy. Qee tus kws tshawb fawb tau npaj siab raws li kev hloov pauv ntawm ob lub xeev sab hauv, txhawm rau kwv yees cov Crystal Crystal theem thaum lub sijhawm thermal ntawm TA15 Alloy.

Crystal plasticity qauv tuaj yeem cuam tshuam lub cev lub cev xws li kev zawv zawg thiab ntxaib, microscale inhomogeneous deformation, microstructure resistance deformation, thiab orientation evolution, thiab yog li tau tsim nyob rau hauv qhov tob thiab dav siv. Nyob rau hauv qhov kev xav no, tus nqi-yooj yim crystal plasticity (RICP) thiab tus nqi-dependent crystal plasticity (RDCP) tau raug npaj thiab tsim raws li. Cov teeb meem tseem ceeb hauv RICP numericalization yog qhov tsis muaj qhov tshwj xeeb ntawm kev ua haujlwm plam thiab kev txiav txim siab ntawm lub sij hawm ywj pheej shear npaum li cas thaum lub sij hawm cov yas deformation ntawm ib leeg muaju. Qee cov kws tshawb fawb tau qhia txog cov txheej txheem kev sib koom ua ke ib nrab los txheeb xyuas cov kab ke ua haujlwm ua ntej txiav txim siab lawv cov nqi txiav thiab ntsuas qhov kev txiav txim uas lub hauv pliaj ua haujlwm. Nyob rau hauv tus qauv RDCP, cov teeb meem tshwm sim los ntawm RICP qauv tau kov yeej los ntawm kev xav tias txhua lub tshuab plam yog ua haujlwm. Txawm li cas los xij, vim yog cov kev cai lij choj uas tsis yog-linear ntws, cov lej loj tsis ruaj khov tshwm sim hauv qhov tseem ceeb ntawm RDCP qauv. Lub implicit algorithm rau kev daws cov qauv RDCP muaj kev ruaj ntseg zoo hauv kev daws teeb meem. Txawm li cas los xij, cov tswv yim no suav nrog kev rov ua dua ntawm qib hauv zos los hloov kho cov kev ntxhov siab, thiab ua kom muaj kev sib npaug thoob ntiaj teb yuav tsum muaj kev siv nyiaj txiag tseem ceeb. Yog li nws tsis tuaj yeem siv los simulate cov txheej txheem tsim peb-dimensional ntawm ntau txhiab lub ntsiab lus. Yog li ntawd, ib qho kev qhia meej algorithm yog npaj los txhim kho kev ua haujlwm ntawm kev suav. Lawv txoj haujlwm tau ua pov thawj zoo tab sis xav tau kev txhim kho ntxiv rau daim ntawv thov rau cov deformations loj thiab cov khoom siv thauj khoom nyuaj. Thaum siv qhov kev xav no rau titanium alloys, muaj lwm qhov teeb meem uas yuav tsum tau hais txog. Vim lub hexagonal ze-packed qauv ntawm titanium alloys, zawv zawg yog lub ntsiab deformation hom ntawm thiab theem, thaum twinning yog ib qho kev xaiv hom ntawm ib theem. Muaj ob peb txoj hauv kev los daws cov neeg coob ntawm cov kev taw qhia tshiab tsim los ntawm cov menyuam ntxaib deformed, xws li lub ntsiab dual orientation (PTR) txoj kev, qhov ntim feem hloov pauv (VFT) txoj kev thiab tag nrho cov txheej txheem mesh. Qee cov kws tshawb fawb thiab lwm tus tau tshuaj xyuas cov qauv qauv, cov txheej txheem kev teeb tsa thiab lwm yam kev siv.

CA algorithm tau siv dav hauv kev tsim qauv ntawm microstructure evolution phenomena. Qee cov kws tshawb fawb hais txog cellular automata (C)ellular automata (CA) qauv thiab DRX luam ntawv qauv tau ua ke los simulate microstructural evolution ntawm TC4 alloy nyob rau hauv zoo teb thiab teb. Nyob rau hauv tus qauv CA, cov phenomena tseem ceeb xws li tus nqi nucleation, kev loj hlob kinetics, thiab cov teebmeem ntawm kev ua tsis tau, nrog rau qhov pib grain loj, tau muab coj mus rau hauv tus account, ua kom muaj nuj nqis thiab topographic simulations. Cov kev kwv yees tau tshwm sim ntawm qhov kev ntxhov siab nkhaus zoo, r-grain loj hlob tus cwj pwm thiab qhov kawg microstructural morphology zoo ib yam li cov kev sim. titanium thaum lub sij hawm txias txias los ntawm CA txoj kev lawv pom tias yam xws li tsis-uniform deformation, non-uniform nucleation, thiab lwm yam yuav ua rau deviations nyob rau hauv recrystallization kinetics los ntawm kev soj ntsuam soj ntsuam. Txhawm rau ua kom paub qhov tsis sib xws ntawm qhov tsis sib xws ntawm qhov tsis sib xws ntawm txhua cov nplej ntawm micro nplai, qee cov kws tshawb fawb tau ua ke nrog CA qauv nrog cov siv lead ua plasticity finite element method (CPFEM) los simulate qhov kev hloov pauv ntawm microstructure.

Titanium alloy muaj qhov zoo ntawm kev ceev, lub zog siab, zoo corrosion, siab kub ua rau muaj kev ua tau zoo. Txawm li cas los xij, nws muaj cov tshuaj tsis zoo nrog lwm cov ntaub ntawv ntawm qhov kub thiab txias thiab yooj yim heev rau nqus cov impurities xws li hydrogen thiab oxygen. Cov cuab yeej no yuam cov titanium alloys sib txawv ntawm cov txheej txheem refining, melting thiab casting, feem ntau txawm ua rau cov pwm puas. Yog tias qib siab titanium alloy yas txoj kev siv tshuab yog siv, nws tuaj yeem txo qhov kev tsim ntawm cov khoom siv, txo qhov kev sib txhuam ntawm cov pwm thiab cov khoom siv, yog li txhim kho qhov zoo ntawm qhov chaw thiab qhov tseeb ntawm qhov chaw, nce qhov kev txwv ntawm cov khoom. , thiab txhim kho txoj kev ua haujlwm ntawm cov khoom siv. Thiab lwm yam nrog kev tshawb fawb ntxiv ntawm cov txheej txheem yas tsim ntawm titanium alloys, los ntawm kev daws cov teeb meem ntawm kev tsim cov yas ntawm titanium alloys thiab kev txhim kho cov txheej txheem kev ua tau zoo ntawm titanium alloys, cov yas tsim tshuab ntawm titanium alloys yuav ua kom paub tab, thiab titanium alloys yuav muaj. ib qho kev nthuav dav dav thiab qhov chaw thov. . Nyob rau hauv xyoo tsis ntev los no, titanium alloys tau siv dav vim lawv qhov qis dua, lub zog siab, zoo corrosion tsis kam, thiab kev ua tau zoo tsawg. Txawm li cas los xij, vim nws cov yas tsis zoo, kev ua haujlwm siab, thiab kev ua haujlwm nyuaj, tam sim no titanium alloy ua tshuab feem ntau yog kub xovxwm. Txij li thaum titanium alloys ntawm qhov kub thiab txias yog qhov ua rau oxidation, hnav thiab lwm yam teeb meem, kev ntsuas sib xws kuj tseem xav tau. Cov pwm kub resistant pwm thiab cov khoom siv cua sov kuj xav tau cov nqi ntau dua ntawm kev ua haujlwm. Yog li ntawd, kawm txog txoj kev loj hlob thiab kev loj hlob yav tom ntej tiam sis ntawm cov thev naus laus zis tseem ceeb rau kev tsim cov yas ntawm titanium alloys yog qhov tseem ceeb heev rau kev txhim kho cov ntawv thov qib ntawm titanium alloys.