Titanium alloy pas nrig muaj qhov zoo ntawm lub zog siab, tsis tshua muaj ntom, zoo txhua yam khoom, zoo toughness, corrosion kuj, thiab lwm yam. Tsis tas li ntawd, titanium alloy pas nrig muaj kev ua haujlwm tsis zoo, kev txiav nyuaj, yooj yim nqus cov impurities xws li hydrogen, oxygen, nitrogen. thiab carbon thaum lub sij hawm kub ua, tsis zoo hnav tsis kam thiab complex txheej txheem ntau lawm. Kev lag luam ntawm titanium pib nyob rau hauv 1948. Yuav kom ua tau raws li cov kev xav tau ntawm txoj kev loj hlob ntawm aviation kev lag luam, titanium kev lag luam yog tsim nyob rau hauv ib tug nruab nrab txhua xyoo tus nqi ntawm 8 feem pua. Tam sim no, txhua xyoo cov khoom tsim tawm los ntawm tag nrho cov titanium alloy pas nrig manufacturers tau mus txog ntau tshaj 40000 tons, thiab muaj ze li ntawm 30 titanium alloy pas nrig hom. Cov titanium alloy rods tau siv dav suav nrog Ti-6Al-4V (TC4), Ti-5Al-2.5Sn (TA7) thiab kev lag luam ntshiab titanium (TA1, TA2 thiab TSI 3).
(1) Lub zog siab ntawm titanium alloy pas nrig
Qhov ceev ntawm titanium alloy tuaj yeem txheeb xyuas, uas feem ntau yog li 4.5g / cm3, tsuas yog 60 feem pua ntawm cov hlau. Lub zog ntawm ntshiab titanium tsuas yog nyob ze ntawm cov hlau zoo tib yam hauv peb lub lag luam. Qee qhov teeb meem muaj lub zog siab thiab titanium alloy tau dhau lub zog ntawm cov qauv hlau alloy tsim hauv ntau yam kev tshawb fawb. Yog li ntawd, lub zog tshwj xeeb (lub zog / qhov ntom) ntawm titanium alloy yog siab 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 Tuam Tshoj lub dav hlau los ntawm cov khoom, lub moj khaum, tawv nqaij, fasteners thiab tsaws iav.
(2) Siab thermal zog ntawm titanium alloy pas nrig
Qhov kev pabcuam kub yog ob peb zaug siab dua li ntawm aluminium alloy, uas tuaj yeem tswj tau lub zog xav tau ntawm qhov kub nruab nrab, ua haujlwm ntawm 450 degree C mus rau 500 degree C rau lub sijhawm ntev, thiab lub zog tshwj xeeb tseem siab heev hauv thaj tsam ntawm 150. degree C mus rau 500 degree C. Lub zog tshwj xeeb ntawm aluminium alloy txo qis ntawm 150 degree C, kev ua haujlwm kub ntawm titanium alloy tuaj yeem ncav cuag 500 degree C, thiab kev ua haujlwm kub ntawm aluminium alloy yog qis dua 200 degree C.
(3) Titanium alloy pas nrig muaj corrosion kuj zoo
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 muaj steel, thiab muaj corrosion kuj zoo rau alkali, chlorine, chlorine, nitric acid, sulfuric acid, thiab lwm yam. Txawm li cas los xij, titanium tsis zoo corrosion kuj los txo cov pa oxygen. thiab chromate media.
(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 qhov sib txawv ntawm cov qauv tsim tsawg heev, xws li TA7, tuaj yeem tuav tau qee yam ntawm plasticity ntawm kev lag luam los ntawm lawv tus kheej ntawm - 253 degree . Yog li ntawd, txoj kev loj hlob ntawm titanium alloys kuj yog ib qho tseem ceeb ntawm cov khoom siv uas tsis tshua muaj kub
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