Nyob rau hauv lub superalloy gamma prime theem yog?

2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38

Gamma prime (γ '): Cov theem no yog cov nag lossis daus siv los ntxiv dag zog rau cov hlau Nws yog theem intermetallic raws li Ni ₃ (Ti, Al) uas tau txiav txim FCC L1 _{2 qauv. Lub γ 'theem yog coherent nrog lub matrix ntawm lub superalloy muaj ib tug lattice parameter uas txawv los ntawm ib ncig ntawm 0.5%.}

gamma prime theem yog dab tsi?

Gamma Prime ('): Thawj theem ntxiv dag zog hauv nickel-based superalloys yog Ni₃ (Al, Ti) , thiab hu ua gamma prime ('). Nws yog ib coherently precipitating theem (piv txwv li, cov siv lead ua dav hlau ntawm precipitate yog nyob rau hauv kev sau npe nrog gamma matrix) nrog rau ib tug txiav txim L1_{2 (fcc) siv lead ua qauv.}

Dab tsi yog gamma theem hauv superalloys?

Gamma (γ): Cov theem no tsim cov matrix ntawm Ni-based superalloy. Nws yog cov tshuaj fcc austenitic theem ntawm cov ntsiab lus alloying. Alloying ntsiab pom nyob rau hauv feem ntau coj mus muag Ni-raws li alloys yog, C, Cr, Mo, W, Nb, Fe, Ti, Al, V, thiab Ta.

Nickel superalloy yog dab tsi?

Nickel-base superalloys yog corrosion resistant high-temperature alloysfeem ntau siv ntawm qhov kev pabcuam kub siab tshaj 500 ° C. Lawv feem ntau muaj ntau txog li 10 alloying ntsiab lus xws li lub teeb xws li boron los yog carbon thiab hnyav refractory ntsiab xws li tantalum, tungsten, los yog rhenium.

Gamma prime tsim li cas?

Raws li gamma prime tau tsim thaum lub sijhawm tsim khoom los ntawm kev kho cua sov tshwj xeeb, cov nag lossis daus tuaj yeem rov qab los rau hauv cov tshuaj los ntawm kev nce qhov kub siab tshaj qhov gamma prime tov kub (kev kho cua sov) (Fig. 13.20). Los ntawm quenching lub Cheebtsam, lub gamma prime tsim yog inhibited.