Kev tshawb fawb thiab kev loj hlob ntawm kub kub titanium alloy tau nce nyob rau hauv 1950s. Thaum xub thawj,Ti-6A1-4Vtau tsim nyob rau hauv lub tebchaws United States nyob rau hauv 1954, uas muaj peev xwm yuav siv tau rau lub chaw ua hauj lwm ntawm 350 ℃ nrog cov khoom zoo. Raws li cov khoom siv aerospace zoo heev, nws tau pib qhov kev tshawb fawb upsurge ntawm titanium alloy.
Lub R& D txheej txheem ntawmkub kub titanium alloytuaj yeem muab faib ua peb lub sijhawm raws li cov txheej txheem ntxiv dag zog thiab theem muaj pes tsawg leeg:
(1) Los ntawm 1950 txog 1970, kev pabcuam kub ntawmhigh-temperature titanium alloyTshaj li ntawm 350 ℃ mus rau 480 ℃. Thaum lub sij hawm no, nws txoj kev nkag siab yog tias tsis muaj teeb meem kev daws teeb meem ntxiv zog pab pawg tau dhau los ua + β Phase.
(2) Lub sijhawm nruab nrab yog xyoo 1970 ~ 1976. Lub sijhawm no, qhov nkag siab ntawm qhov kub thiab txias titanium alloy tau kho kom zoo dua vim tias siv dav siv me me ntawm Si, thiab qhov kev pabcuam kub ntawm cov alloy tshaj li ntawm 480 ℃ mus rau 540. ℃. Txawm hais tias cov hlau tseem tseem muaj zog los ntawm cov khoom siv tshuaj, vim yog qhov sib ntxiv ntawm Si me me, pawg alloy theem dhau los ua + β Phase thiab me me ntawm silicide.
(3) Lub sijhawm thib peb yog los ntawm 1977 txog 1984. Lub cim tseem ceeb ntawm lub sijhawm no yog tias theem (TA1) yog siv los ua lub zog txhawb zog, yog li qhov kev pabcuam kub ntawmhigh-temperature titanium alloytau tshaj ntawm 540 ℃ to 600 ℃. Nws yog ib qho nyuaj kom ua tau raws li qhov yuav tsum tau ua ntawm 600 ℃ tsuas yog los ntawm kev daws teeb meem ntxiv dag zog. Txawm li cas los xij, thaum muaj qee qhov nyiaj ntawm theem A thiab silicide yog precipitated nyob rau hauv cov hlau, cov creep kuj thiab durability ntawm cov hlau yuav txhim kho, thiaj li ua tau raws li cov kev pab cuam ntawm 600 ℃.
Txoj kev loj hlob sai ntawm kev lag luam aviation tau txhawb kev tshawb fawb thiab kev loj hlob ntawm high-temperature titanium alloy. Rau Tebchaws Meskas, Tebchaws Askiv, Russia thiab lwm lub tebchaws tsim hauv daim teb no, lawv tau tsim lawv tus kheej superalloy titanium alloy system.
Nyob rau theem pib ntawm kev loj hlob,Ti-6A1-4Vtsim los ntawm Tebchaws Meskas yog ib qho classic heevsuperalloy, uas yog a (a + b) ob-theem hom. Nws muaj qhov zoo ntawm qhov zoo ntawm qhov kub thiab txias, thermal stability thiab kub ua haujlwm. Nws yog ib qho tseem ceeb nyob rau hauv keeb kwm kev loj hlob ntawm superalloy titanium alloys, thiab kuj nteg lub hauv paus rau kev tshawb fawb ntawm titanium alloys nyob rau hauv ntau lub teb chaws.
Tom qab ntawd, nyob rau xyoo 1960, Tebchaws Meskas tau ua qhov kev sib tw thiab qhia txog t-62468 thiab ti-6242 kom nce qhov kev pabcuam kub ntawm 350 ℃ txog 450 ℃. Nws lub ntsiab feature yog qhov sib ntxiv ntawm B ruaj khov Mo, uas txhim kho cov khoom ntawm cov alloys piv nrog Ti-6A1-4V, tshwj xeeb tshaj yog cov creep kuj.
Nyob rau xyoo 1970, Tebchaws Meskas tau ua tiav dua thiab txhim kho t-6242s ntawm T-6242, nce qhov kev pabcuam kub rau 540 ℃. Nws lub ntsiab feature yog qhov sib ntxiv ntawm Si, uas txhim kho cov creep kuj thiab thermal stability ntawm cov hlau.
Xyoo 1988, t-1100 alloy tau qhia hauv Tebchaws Meskas, uas yog ti-a1-sn-zr-mo-si, ze ntawm titanium alloy nrog kev pabcuam kub ntawm 600 ℃. Ti-1100 alloy yog ntse tsim los ntawm kev kho cov ntsiab lus ntawm alloying ntsiab nrog siv rau ti-6242s. Vim nws cov khoom zoo heev, paub tab Ti-1100 alloy yog dav kawm raws li cov qauv kub kub titanium alloy, thiab nws yog siv rau qhov chaw ntawm t552-712 hloov cav.
