Titanium alloy tuav muaj qhov zoo ntawm lub zog siab, tsis tshua muaj siab, zoo txhua yam khoom, zoo toughness, thiab corrosion kuj. Tsis tas li ntawd, titanium alloy tuav muaj kev ua haujlwm tsis zoo thiab nyuaj rau kev txiav. Lawv yooj yim rau nqus cov impurities xws li hydrogen, oxygen, nitrogen, thiab carbon thaum ua kub. Lawv muaj kev hnav tsis zoo thiab cov txheej txheem ntau lawm. Titanium pib ua lag luam hauv xyoo 1948. Lub titanium sector tau nthuav dav ntawm tus nqi kwv yees li 8 feem pua ntawm ib xyoos txhawm rau ua kom tiav cov kev xav tau ntawm kev lag luam aviation txoj kev loj hlob. Tam sim no muaj ntau tshaj 40000 tons ntawm cov khoom siv ua txhua xyoo los ntawm tag nrho cov titanium alloy pas nrig manufacturers, thiab muaj ze li ntawm 30 ntau hom ntawm titanium alloy rods. Titanium alloy bar siv dav suav nrog Ti-6Al-4V (Gr5), Ti-5Al-2.5Sn (BT5-1), thiab muaj titanium ntshiab (Gr1, Gr2, thiab Gr3).
(1) Titanium alloy bar muaj lub zog siab
Qhov ntom ntawm titanium alloy tuaj yeem txheeb xyuas. Nws yog feem ntau txog 4.5g / cm3, uas tsuas yog 60 feem pua ntawm cov hlau. Lub zog ntawm ntshiab titanium yog ze rau ntawm cov hlau zoo tib yam hauv peb lub lag luam. Qee qhov teeb meem muaj lub zog siab thiab titanium alloy tshaj lub zog ntawm cov qauv hlau alloy tsim hauv ntau hom kev tshawb fawb, yog li ntawd, lub zog tshwj xeeb (lub zog / ntom) ntawm titanium alloy yog ntau dua li ntawm lwm cov hlau tsim cov qauv tsim cov ntaub ntawv, uas. tuaj yeem tsim cov khoom nrog lub zog ua haujlwm siab, zoo rigidity, thiab lub teeb yuag. Tam sim no, Tuam Tshoj cov tsoos titanium alloy feem ntau yog siv rau lub cav ua haujlwm ntawm lub dav hlau hauv peb lub teb chaws los ntawm cov khoom siv, lub moj khaum, tawv nqaij, fasteners, thiab tsaws iav.
(2) Siab thermal zog ntawm titanium alloy bar
Qhov kev pabcuam kub yog ntau pua centigrade siab dua li ntawm aluminium alloy, thiab qhov yuav tsum tau muaj zog tuaj yeem tswj tau ntawm qhov kub nruab nrab. Lub zog tshwj xeeb tseem yog siab heev nyob rau hauv thaj tsam ntawm 150 ° C thaum ua haujlwm ntawm 450 ° C thiab 500 ° C. Lub zog tshwj xeeb ntawm aluminium alloy txo ntawm 150 ° C, kev ua haujlwm kub ntawm titanium alloy tuaj yeem ncav cuag 500 ° C, thiab Kev ua haujlwm kub ntawm aluminium alloy yog qis dua 200 degree C.
(3) Titanium alloy pas nrig muaj corrosion kuj zoo
Qhov kev tiv thaiv corrosion ntawm titanium alloy nyob rau hauv cov huab cua ntub thiab dej hiav txwv yog pom tseeb zoo dua li ntawm cov hlau tsis huv. Nws muaj kev tiv thaiv corrosion zoo tiv thaiv alkali, chlorine, chlorine, nitric acid, sulfuric acid, thiab lwm yam. Txawm li cas los xij, corrosion kuj ntawm titanium kom txo cov pa oxygen thiab chromate nruab nrab tsis zoo.
(4) Titanium alloy pas nrig muaj qhov ua tau zoo ntawm qhov kub thiab txias
Cov khoom siv ntawm titanium alloys tuaj yeem khaws cia ntawm qhov kub thiab txias. Titanium alloys nrog kev ua tau zoo ntawm qhov kub thiab txias thiab tsis tshua muaj qhov sib txawv tsim, xws li Ti-5Al-2.5Sn (BT5-1), tuaj yeem tswj tau qee qib ntawm plasticity ntawm kev lag luam ntawm - 253 degree . Yog li ntawd, txoj kev loj hlob ntawm titanium alloys kuj tseem ceeb heev rau cov khoom uas tsis tshua muaj kub.
