Dab tsi yog lub neej ntawm titanium alloys
Titanium alloys, thanks to their lightweight, high-strength, corrosion-resistant, and biocompatible properties, have become a core material in modern industry and high-end manufacturing. Los ntawm Aerospace mus rau tob- kev siv cov khoom noj hiav txwv, lawv cov ntawv thov npog cov tawv kom zoo nkauj. Txawm li cas los xij, qhov kawg lifespan ntawm cov khoom siv titanium tseem yog cov lus nug ntawm cov khoom siv, ib puag ncig kev ua haujlwm, ib puag ncig kev mob, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm, thiab cov tswv yim txij nkawm.
Khoom Siv Khoom
Lub neej ntawm titanium alloys nyob ntawm feem ntau ntawm lawv cov tshuaj muaj pes tsawg leeg thiab microstructure. Ntshiab titanium (xws li Ta1 {{{{{{{{} Ta4) Ua rau zoo siab tshaj rau nws cov ntsiab lus zoo thiab cov ntsiab lus tsis loj thiab cov impurity cov ntsiab lus. Tshwj xeeb hauv kev siv biomedical, nws cov leeth leaching tuaj yeem txo cov mob tshwm sim tom qab ntev}}}} txuas nws lub neej ua haujlwm. Alloyed titanium (xws li TC4 thiab TA15) ua tiav ib + dual {{11 {}} pay cov qauv los ntawm kev ntxiv cov ntsiab xws li txhuas thiab vanadium. Qhov no tau txhim kho lub zog thiab kev ua kom muaj zog thaum muaj qee qhov corrosion tsis kam, ua rau haum rau high- kev ntxhov siab cov kev siv. Nws lifespan yog feem ntau txiav txim siab los ntawm kev ua haujlwm qaug zog tsis yog corrosion. Ntawm lub micreetration qib, ke loj, dislocation loj, thiab theem nrab theem faib tawm ncaj qha cuam tshuam rau cov khoom lub neej. Cov qauv nplua-grained nce qoob loo ciam chaw thaj tsam, tabkawg tawg tawm thiab txhim kho lub neej qaug zog. Uniformly faib cov qib kev txhawb nqa (xws li tom qab (xws li tial) tsis muaj kev ntxhov siab thiab ncua kev ua kom tawg. Tsis tas li ntawd, cov txheej txheem kho cua sov (xws li kev daws teeb meem kev laus) tuaj yeem ua kom qhov sib npaug ntawm lub neej thiab kev ua tau zoo los ntawm Manipulating theem muaj pes tsawg leeg thiab qhov loj me.
Ib puag ncig kev yoog
Lub neej ntawm titanium alloys yog txiav txim siab ntau los ntawm ib puag ncig cov kev mob. Hauv oxidizing ib puag ncig (xws li huab cua thiab dej tshiab), ua kom tiv thaiv cov duab ntom ntom nti thiab txuas ntxiv ua rau kev txhim kho ntxiv rau caum lossis ntau pua xyoo. Txawm li cas los xij, hauv kev txo qhov chaw ib puag ncig (xws li hydrochloric acid thiab siab- oxide zaj duab xis thiab muaj feem ua rau lub neej muaj sia nyob rau ob peb xyoos. Tsis tas li ntawd, kev nyuaj siab corrosion tawg (SCC) yog ib lub neej tsis ua hauj lwm zoo ntawm cov khoom siv noo nyob ntawm cov kev ntxhov siab thiab kev ua haujlwm ntawm nruab nrab.
High - txoj kev ib puag ncig ib puag ncig kuj sib tw lub neej ntawm lub neej ntawm alloys alloys. Thaum temperatures ntau dua 400 degree, titanium lub zog txo qis, thaum nws oxidation tus nqi accelerates, tsim cov txheej txheej oxide uas ua rau cov khoom siv nrawm. Yog li ntawd, lub dav hlau cav kub {}}}}}} kev sib dhos (xws li ntxiv kom muaj zog- sov ruaj khov thiab txuas ntxiv rau lawv lub neej pabcuam.
Tab tom ua
Kev ua rau muaj feem cuam tshuam lub neej ntawm titanium alloys thoob plaws cov khoom siv lub neej. Cov txheej txheem ua haujlwm kub xws li Forging thiab Rolling tuaj yeem txhim kho lub zog zoo li lub zog thiab qaug zog los ntawm kev ua kom zoo dua grain thiab tshem tawm cov tsis xws luag. Cov txheej txheem ua haujlwm txias (xws li cov khaub ncaws txias thiab cov kev pheej hmoo ua kom tsis txhob muaj zog ntxiv, tab sis nruj} Net} Net} Net} Net} Net} Net} Net} Net} Net} Net}}} dhuav tsis tau zoo li porosity thiab cov kab nrib pleb, uas tuaj yeem ua rau muaj ntau yam Txo kev ua kom qaug zog.
Kev kho deg yog txoj kev tseem ceeb rau kev ua haujlwm txuas ntxiv. Kev Hloov Kho Cov Nrig Ntau xws li micro {{1} plhaw plaw thiab sib xyaw ua ke ntawm titanium alloy surfaces, txhim kho corrosion, txhim kho corrosion thiab hnav tsis kam. Laser cladding Technology, los ntawm kev ntxiv cov khoom sib xyaw uas muaj tej cav (muaj peev xwm tsim kev ua haujlwm zoo dua 40%
Cov tswv yim txij nkawm
Cov txij nkawm ua haujlwm tuaj yeem txuas ntxiv lub neej ntawm titanium alloys. Kev tshawb xyuas ib txwm (xws li ultrasonic kuaj thiab electrochemical impedance spectroscopy) tuaj yeem tshawb xyuas corrosion lossis qaug zog tawg thaum ntxov, tiv thaiv kev ua tiav sai sai. Kev tu thiab txheej txheej kho tau tuaj yeem kho cov khoom muaj peev xwm thiab txuas ntxiv lub neej pabcuam. Piv txwv li, hauv kev lag luam marine, biennial corrosion tus nqi tshuaj xyuas tuaj yeem txuas kev txij nkawm voj voog ntawm titizium almoy {3/2 clm pawg ntawm peb xyoos mus rau 20 xyoo. Hauv kev lag luam aviation, tiag tiag {6} Kev ntsuas lub sijhawm thiab kev ntsuas kev nyuaj siab tuaj yeem twv cov phiaj xwm ntxiv thiab ua kom zoo dua qub.
Kev tswj hwm lub neej thaum lub sijhawm tsim yog qhov tseem ceeb. Kev tsim kho cov txheej txheem kev sib raug zoo los ntawm kev ntsuas finiteter lossis kev siv cov kev ntxhov siab hauv cheeb tsam no tuaj yeem txhim kho cov khoom siv lub neej. Piv txwv li, tob - Hiav txwv siab Hulls tsim kom tawg, txuas ntxiv lawv lub siab xav ua lub neej ntev dua 30 xyoo. Biomedical kev sim siv biomimetic qauv qauv (xws li cov qauv cuab yeej ntxeem tau uas txhawb cov pob txha kev ntxhov siab thiab txuas ntxiv rau lawv lub neej ua haujlwm.
Lub neej ntawm titanium alloys tsis muaj kiag li kev txwv loj dua; Nws cov txheej txheem tseem ceeb nyob hauv qhov sib npaug tsis zoo ntawm "cov ntaub ntawv {{{} {1} {{2} {2} Txij Nkawm." Los ntawm thawb cov kev txwv ntawm corrosion resistance los ntawm kev tsim qauv tsim, kom ua kom muaj kev tswj hwm zoo nkauj los ntawm titive kev saib xyuas, kom tau kev ua haujlwm sib luag ntawm titorive partnes txuas ntxiv mus thawb cov ciaj ciam ntawm physics.
