Alpha Titanium Alloys

Titanium: Alloying

FH Froes, hauv Encyclopedia ntawm Cov Khoom: Science thiab Technology, 2001

1.1 α-Alloys

Cov alloys uas muaj feem ntau contain-theem nyob hauv qhov kub zoo tshaj li 540 ° C (1000 ° F). Ib chav kawm tseem ceeb ntawm α-alloy yog cov tsis muaj pa dawb (CP) titanium tsev neeg cov alloys uas sib txawv los ntawm cov pa oxygen thiab hlau hauv txhua qhov alloy. Alloys nrog cov ntsiab lus sib txawv ntau dua yog siab dua lub zog, lub zog tawv, thiab kev hloov pauv kub piv nrog cov siab-purity alloys. Lwm cov alloys contain-alloys muaj qhov sib ntxiv ntxiv xws li aluminium thiab tin (piv txwv, Ti – 5Al – 2.5Sn thiab Ti – 6Al – 2Sn – 4Zr – 2Mo (hauv wt.%)).

Feem ntau, cov alloys-nplua nuj muaj kev tiv thaiv zoo rau qhov kub siab tshaj li α / β- lossis β-alloys, thiab α-alloys nthuav tawm me ntsis los ntawm kev kho cua sov. Cov alloys no feem ntau yog annealed lossis recrystallized kom tshem tawm cov kev ntxhov siab los ntawm kev ua haujlwm txias. Lawv muaj cov weldability zoo thiab feem ntau ua tsis tau zoo forgeability hauv kev sib piv rau α / β- lossis β-alloys.

Titanium al-alloys tag nrho ntawm α-theem. Lawv muaj aluminium (Al) yog qhov tseem ceeb alloying keeb, ruaj khov α-theem.

Titanium nyob ze al-alloys muaj ib qho me me ntawm cov roj hmab ductile-theem. Dhau li ntawm α-theem stabilizer (aluminium), ze rau α-Alloys yog alloyed los ntawm 1-2% ntawm β-theem stabilizers (molybdenum, silicon).

Alloying ntsiab hauv titanium α-alloys thiab Near α-alloys kuj muab cov kev ua kom muaj zog ntxiv.

Aluminium yog qhov ua tau zoo tshaj plaws ntawm cov alloys.

Titanium α-Alloys thiab Ze α-Alloys muaj cov Kev Sib Tw Zoo thiab Ua Ntej Ua Ntej ua ke nrog kev sib zog nrog kev siv zog, uas tau ceev nrog nce kub txog 1100 ºF (600ºC).

Cov alloys tau yooj yim welded, tab sis lawv qhov ua haujlwm tau nyob hauv lub xeev kub tsis zoo.

Vim tias muaj β-theem nyob ze Near-Alloys lawv yuav raug kho kub thiab raug tsim nyob hauv lub xeev kub.

Titanium α-Alloys thiab Nyob ze α-Alloys yog siv rau kev tsim cov tshuab hluav taws xob cov tshuab, cov tshuab ua pa thiab lwm cov txheej txheem cov cuab yeej ua haujlwm siab txog li 900 ºF (480ºC), siab siab cryogenic hlab ntsha, dav hlau cav compressor blades, cov twj tso kua mis roj tsheb thiab cov qauv txheej txheem, kev ua haujlwm. rau lub sijhawm luv luv mus txog 1100 ºF (600ºC), lub tshav dav hlau thiab dav hlau-cav qhov chaw, welded stator cov rooj sib txoos thiab cov hollow compressor blades.

Tshuaj lom neeg cov tshuaj lom ntawm qee cov titanium alpha thiab ze-alpha alloys

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