Kev soj ntsuam ntawm Titanium Alloy yam ntxwv

Titanium thiab titanium alloys muaj kev tiv thaiv corrosion zoo thiab yog cov hlau tsis zoo corrosion-resistant. Nyob rau hauv cov huab cua thiab dej hiav txwv, titanium alloys tuaj yeem tiv taus corrosive media xws li acids, alkali thiab ntsev tsuag, thiab lawv cov corrosion kuj yog thib ob tsuas yog txhuas thiab stainless hlau.

Txawm li cas los xij, hauv dej, titanium yuav hnov ​​​​mob nrog oxides xws li chlorine, oxygen, sulfur thiab nitrogen los ua corrosion. Kev tiv thaiv corrosion ntawm titanium hauv dej hiav txwv yog qhov phem dua li cov hlau tsis muaj steel, thiab hydrogen embrittlement tuaj yeem tsim hauv dej hiav txwv.
Titanium thiab titanium alloys muaj siab elastic modulus, zoo plasticity thiab processability. Qhov no yog vim tias lawv muaj cov peev txheej zoo tshaj plaws xws li cov kab mob siab tiv, me me li qub, kub tsis kam, thiab lwm yam kev ua tau zoo.
Titanium alloys muaj zoo plasticity thiab toughness ntawm chav tsev kub. Thaum lub sijhawm ua haujlwm kub, thaum qhov kub tsis tshaj 450 degree, titanium alloys tseem tuaj yeem tuav cov yas siab, txawm tias qhov kub thiab txias.
Yog li ntawd, titanium alloys tuaj yeem siv dav hauv thaj chaw aerospace. Titanium alloy kuj muaj lub zog siab, nws lub zog yog 1.5 ~ 2.5 npaug ntawm cov hlau, thiab nws lub zog yog li 50% siab dua hlau; Thaum muaj qhov tsim nyog ntawm cov ntsiab lus tsawg hauv ntiaj teb tau ntxiv rau cov hlau, nws lub zog tuaj yeem ua tau ntau dua ob npaug; Thaum titanium alloy ntxiv Nrog rau qhov tsim nyog ntawm magnesium, nws lub zog tuaj yeem nce los ntawm 2 mus rau 4 zaug.
Titanium thiab titanium alloys muaj qhov kub tshwj xeeb (li 10 npaug ntawm cov hlau). Qhov no yog vim qhov tsawg ntom ntawm titanium alloys vim lawv cov cua kub tshwj xeeb. Thaum titanium alloy yog rhuab mus rau ib tug tej yam kub, nws yuav nqus tau ib tug loj npaum li cas ntawm tshav kub, thiab ib theem hloov cov tshuaj tiv thaiv yuav tshwm sim nyob rau hauv high kub, ua rau nws ntim yuav nthuav. Qhov kev nthuav dav no yuav ua rau nws cov cua kub tshwj xeeb nce ntxiv. Qhov ceev yog li 1/3 ntawm cov hlau, 1/2 ~ 1/4 ntawm txhuas thiab stainless hlau; lub elastic modulus yog hais txog 1.5 npaug ntawm cov hlau thiab 2 ~ 3 zaug ntawm stainless hlau, thiab titanium alloy yog 2 ~ 3 zaug ntawm hlau thiab txhuas. Nyob rau tib lub sij hawm, nws hardness kuj tsawg (txog li nyuaj li hlau thiab txhuas los yog stainless hlau). Yog li ntawd, nws yog qhov tsim nyog rau kev tsim cov dav hlau cav hniav, foob pob ua ntxaij thruster casings, thiab lwm yam.

Titanium thiab titanium alloys muaj cov thermal rwb thaiv tsev zoo, thiab lawv cov thermal conductivity tsuas yog 1/3 ~ 1/4 ntawm thermal conductivity ntawm hlau hauv cov ntaub ntawv xws li tooj liab thiab txhuas. Nyob rau tib lub sijhawm, nws kuj muaj qhov ua tau zoo ntawm cov cua kub dissipation, zoo huab cua permeability thiab thermal conductivity, thiab tuaj yeem sai sai dissipate cua sov rau ib puag ncig ib puag ncig. Titanium alloys tsuas yog nqus li 20% ntawm cov cua sov nyob rau hauv ib txwm muaj xwm txheej, tab sis tuaj yeem nqus tau li 40% ntawm cov cua sov ntawm qhov kub thiab txias. Yog li ntawd, nyob rau hauv qhov kub thiab txias, titanium alloys tuaj yeem tiv taus qhov kub thiab txias ntev ntev yam tsis muaj oxidized; lawv tseem tuaj yeem tuav cov khoom zoo txawm tias siab tshaj 300 degree. Yog li ntawd, titanium thiab titanium alloys feem ntau yog siv los tsim cov khoom kub, corrosion-resistant los yog high-temperature-resistant structural qhov chaw.
Vim nws zoo corrosion kuj thiab txhua yam khoom, nws tuaj yeem siv los ua cov khoom siv hlau thiab txhuas hauv ntau zaus. Txawm li cas los xij, yog tias nws tuaj yeem ua ke nrog lwm cov ntaub ntawv hlau thiab cov txheej txheem kho cua sov tsim nyog, nws cov kev tiv thaiv corrosion tuaj yeem txhim kho ntxiv.
Nws cov yas deformation muaj peev xwm yog tsawg ntawm chav tsev kub; tab sis nws lub peev xwm deformation ntawm qhov kub thiab txias yog zoo ib yam li cov aluminium alloys, thiab nws cov hauj lwm hardening tus nqi kuj tsawg. Yog li ntawd, titanium thiab titanium alloys yog tsim rau kev tsim cov qauv thiab cov khoom siv tshuab.
Nws muaj qhov zoo weldability ntawm qhov kub thiab txias; nws tuaj yeem welded ntawm qhov kub thiab txias; nws tuaj yeem raug welded rau hauv ntau qhov chaw thiab cov khoom sib txuas nrog cov duab nyuaj thiab qhov yuav tsum tau muaj qhov raug siab; nws tuaj yeem welded los ntawm nplaim taws lossis arc vuam txoj kev.
Vuam tuaj yeem ua tau los ntawm argon arc vuam, tiv thaiv vuam thiab hluav taws xob brazing txoj kev. Nyob rau tib lub sijhawm, titanium thiab titanium alloys tuaj yeem welded thiab brazed nrog ntau yam ntawm cov ntaub ntawv hlau, yog li lawv tuaj yeem siv kom tau cov khoom siv nrog cov thicknesses loj dua, cov duab nyuaj, lossis qhov siab qhov tseeb qhov yuav tsum tau tab sis tsis muaj zog. Lub elastic modulus yog ib qho kev ntsuas ntawm cov hlau Ib qho tseem ceeb qhia txog cov khoom muaj peev xwm tiv thaiv deformation thiab nws cov kev ua tau zoo.