TC4 titanium alloy
TC4 titanium alloy yog ib qho - titanium alloy ntse tsim los ntawm Tebchaws Meskas hauv xyoo 1954, muaj 6 feem pua ntawm cov khoom ruaj khov thiab 4 feem pua ntawm cov khoom ruaj khov V. Cov txhuas sib npaug ntawm cov npe ntawm TC4 titanium alloy yog 7.{{9 } }, qhov sib npaug molybdenum yog 2.9, thiab lub xeev annealed muaj 10 feem pua -15 feem pua theem. Al nyob rau hauv Ti-Al-V system txhim kho chav tsev kub lub zog thiab kub lub zog ntawm cov hlau los ntawm cov khoom siv ntxiv zog, thiab V yog ib qho ntawm ob peb cov ntsiab lus alloying hauv titanium alloys uas tuaj yeem txhim kho lub zog thiab plasticity. Cov txiaj ntsig zoo ntawm V ntawm cov yas ntawm titanium alloys yog tias nws tsis nce qhov sib piv ntawm c / a axis ntawm -state lattice zoo li feem ntau cov ntsiab lus alloying, tab sis txo qhov sib piv, yog li txhim kho qhov tsim ntawm -theem thiab tsis txhob ntev. - siv sij hawm. Alloy embrittlement tshwm sim thaum tus txheej txheem.
Cov yam ntxwv tseem ceeb ntawm TC4 titanium alloy yog kev ua haujlwm zoo heev thiab kev ua haujlwm zoo. TC4 titanium alloy muaj qhov nruab nrab ntawm chav sov thiab kub lub zog, zoo creep tsis kam thiab thermal stability, siab qaug zog tsis kam thiab tawg kev loj hlob tsis kam nyob rau hauv seawater, thiab txaus siab tawg toughness thiab kub ntsev kev nyuaj siab corrosion kuj. Lub rhiab heev rau hydrogen kuj yog me dua li ntawm TC2 thiab TC1 alloys, thiab nws yog haum rau kev tsim khoom ntawm ntau yam ua hauj lwm nyob rau hauv ib tug dav kub ntau yam ntawm -196 ~ 450 degree, tshwj xeeb tshaj yog cov khoom tsim nrog lub hauv paus ntsiab lus ntawm kev puas tsuaj. zam kev txwv. TC4 titanium alloy kuj muaj cov txheej txheem zoo heev plasticity thiab superplasticity, haum rau kev tsim los ntawm ntau txoj kev ua haujlwm siab, thiab siv ntau txoj hauv kev rau vuam thiab machining.
Cov khoom tseem ceeb ntawm TC4 titanium alloy yog rods, forgings, nyias daim hlau, tuab daim hlau, profiles thiab xov hlau, thiab lwm yam, thiab tseem siv rau castings (ZTC4).
TC4ELI titanium alloy
TC4ELI yog ib qho kev txhim kho ntawm TC4, qhov sib txawv tseem ceeb yog qhov sib txawv Al cov ntsiab lus thiab cov ntsiab lus qis ntawm cov ntsiab lus interstitial Fe, N, H, O.
TC4ELI titanium alloy tau dhau los ua kev kho mob kev cog hniav vim nws cov biocompatibility zoo, tsis tshua muaj elastic modulus, tsis tshua muaj ntom, zoo tiv thaiv corrosion, non-toxicity, siab yield zog, ntev qaug zog lub neej, loj plasticity ntawm chav tsev kub, thiab yooj yim tsim. cov khoom zoo tagnrho rau tej yam. Kev kho mob TC4ELI titanium alloy daim hlau yog tsuas yog siv rau kev kho pob txha taub hau thiab pob txha grafting, uas muaj cov kev xav tau ntau dua rau nws lub zog, qaug zog lub neej thiab plasticity.
Titanium alloy yog ib qho alloy uas muaj titanium thiab lwm yam khoom. Titanium muaj ob hom allotropic crystals: titanium yog ib qho allotropic isomer nrog lub melting point ntawm 1668 degree, thiab nws yog ib tug kaw-packed hexagonal lattice qauv thaum nws qis dua 882 degree, hu ua -titanium; Nws yog lub cev-centered cubic qauv saum toj no 882 degree lattice qauv, hu ua -titanium. Siv cov yam ntxwv sib txawv ntawm ob lub qauv saum toj no ntawm titanium, ntxiv cov ntsiab lus alloying tsim nyog kom maj mam hloov cov theem hloov kub thiab cov ntsiab lus kom tau txais titanium alloys nrog cov qauv sib txawv.
Raws li lub hauv paus ntawm TC4 alloy, TC4 ELI titanium alloy txo cov ntsiab lus ntawm interstitial ntsiab C, O, N thiab impurity Fe, thiab lub zog yog txo, tab sis lub peev xwm thiab toughness tuaj yeem txhim kho tau zoo. TC4 ELI muaj plasticity zoo, toughness, zoo vuam kev ua tau zoo thiab tsis tshua muaj kub kev ua tau zoo, thiab yog dav siv nyob rau hauv tseem ceeb teb xws li tsis tshua muaj kub engineering, kev kho mob, ships thiab aircraft.
TC4 alloy yuav siv tau nyob rau hauv ib puag ncig zoo tib yam los yog kub ib puag ncig, TC4ELI alloy yuav siv tau nyob rau hauv ultra-low kub ib puag ncig
Cov qib zoo sib xws ntawm TC4 titanium alloy thiab TC4ELI titanium alloy yog: T-6A-4V / Qib 5 (American qib), BT 6 (Russian qib), IMI 318 (British qib), TiAI6V4 (German qib).
Cov khoom siv kho mob yog tsim nyob rau hauv tib neeg lub cev vim muaj kev raug mob thiab qog nqaij hlav pob txha thiab pob qij txha puas. Titanium thiab titanium alloys yog siv los tsim cov pob qij txha, pob txha daim hlau thiab cov ntsia hlau, uas tau siv dav hauv kev kho mob. Kuj tseem siv tau rau hauv cov pob qij txha (xws li lub taub hau femoral), pob qij txha hauv caug, lub luj tshib pob qij txha, cov pob qij txha metacarpophalangeal, cov pob qij txha interphalangeal, mandibles, cov pob txha vertebral (spinal orthoses), pacemaker tsev nyob, lub siab lub ntsws (lub plawv zoo li qub), kev cog lus dag, titanium- nickel orthodontics, thiab titanium mesh hauv cranial yas phais, thiab lwm yam.
Vim muaj cov yam ntxwv ntawm lub zog tshwj xeeb, biocompatibility thiab zoo corrosion kuj ntawm lub cev kua, titanium thiab titanium alloys yog attracting ntau thiab ntau xim.
Ti 6Al-4V ELI yog qib ntawm Ti 6Al-4V nrog cov qauv me me, kom nws tuaj yeem ua tiav qhov siab tshaj plaws thiab tsim nyog rau cov dej hiav txwv thiab qhov kub thiab txias. Qib no ntawm alloy feem ntau yog siv nyob rau hauv lub annealed mob. Ti 6Al-4V yog cov khoom siv zoo dua ntawm kev xaiv hauv thaj chaw kho mob cog.
Cov txheej txheem tsim khoom yog: nruab nrab so annealing ntawm 900-120 degrees Fahrenheit rau 1-4 teev, thiab cua txias. Muab ob npaug rau annealing, round bars thiab forgings: tov anneal ntawm 50-100 degree F beta hloov pauv kub, tuav tsawg kawg yog 1 teev, cua txias, ces reheat ntawm 1300-1400 degree F, tuav tsawg kawg yog 1 teev, cua txias . Relaxation annealing yog tsim nyog tom qab vuam.
