Cov kev ua tiav zoo ntawm kev lag luam aerospace yog sib cais los ntawm kev txhim kho thiab kev ua tiav hauv aerospace cov ntaub ntawv thev naus laus zis. Qhov siab tshaj plaws, kev kub ceev thiab siab maneuverability ntawm fighter dav hlau xav kom cov khoom siv ntawm lub dav hlau yuav tsum ua kom muaj zog txaus thiab cov kev xav tau nruj. Cov ntaub ntawv cav yuav tsum tau ua kom tau raws li qhov kev thov rau kev kub siab ua haujlwm, kub kub alloys, ceramic-based composite cov ntaub ntawv yog cov ntaub ntawv tseem ceeb.

Cov pa steel softens saum 300 ℃, ua rau nws tsis haum rau qhov chaw kub kub. Nyob rau hauv kev nrhiav kom muaj zog hloov dua siab tshiab efficiency, siab dua thiab siab dua kev khiav hauj lwm kub yuav tsum tau nyob rau hauv lub tshav kub engine lub hwj chim. High-temperature alloys tau tsim rau kev ua haujlwm ruaj khov ntawm qhov kub siab tshaj 600 ℃, thiab cov thev naus laus zis txuas ntxiv mus.

High-temperature alloys yog cov ntaub ntawv tseem ceeb rau lub tshuab aerospace, uas tau muab faib ua hlau-raws li kub-kub alloys, npib tsib xee-raws li cov ntsiab lus ntawm cov hlau alloy. High-temperature alloys tau siv nyob rau hauv aero-engines txij li thaum lawv pib, thiab yog cov ntaub ntawv tseem ceeb hauv kev tsim cov tshuab aerospace. Cov qib kev ua tau zoo ntawm lub cav yog nyob ntawm qhov ua tau zoo ntawm cov khoom siv kub kub alloy. Nyob rau hauv niaj hnub aero-engines, tus nqi ntawm high-temperature alloy cov ntaub ntawv account rau 40-60 ib xees ntawm tag nrho cov hnyav ntawm lub cav, thiab yog tsuas yog siv rau plaub lub ntsiab kub-kawg Cheebtsam: combustion chamber, qhia, turbine hniav thiab turbine discs, thiab ntxiv rau, nws yog siv rau cov khoom xws li cov ntawv xov xwm, rings, combustion chambers thiab tail nozzles.

(Qhov liab ntawm daim duab qhia tau hais tias kub kub alloys)

Nickel-raws li high-temperature alloys Feem ntau ua hauj lwm ntawm 600 ℃ saum toj no tej yam kev mob ntawm ib tug tej yam kev ntxhov siab, nws tsis tsuas yog muaj zoo kub-kub oxidation thiab corrosion kuj, thiab muaj ib tug high-temperature zog, creep zog thiab endurance zog, raws li zoo raws li zoo qaug zog kuj. Feem ntau yog siv nyob rau hauv lub tshav pob ntawm aerospace thiab aviation nyob rau hauv high-temperature tej yam kev mob, structural Cheebtsam, xws li aircraft cav hniav, turbine discs, combustion chambers thiab thiaj li nyob. Nickel-based high-temperature alloys tuaj yeem muab faib ua deformed high-temperature alloys, cam khwb cia high-temperature alloys thiab high-temperature alloys tshiab raws li kev tsim khoom.

Nrog rau cov cua sov-resistant alloy ua hauj lwm kub yog siab dua thiab siab dua, cov ntsiab lus ntxiv dag zog rau cov hlau alloy yog ntau thiab ntau, qhov ntau complex muaj pes tsawg leeg, uas ua rau ib co alloys tsuas yog siv nyob rau hauv lub xeev cam khwb cia, tsis tuaj yeem deformed kub ua. Ntxiv mus, qhov nce ntawm cov ntsiab lus alloying ua rau cov nickel-raws li alloys solidify nrog loj segregation ntawm lub Cheebtsam, uas ua rau lub non-uniformity ntawm lub koom haum thiab cov khoom.Kev siv cov hmoov metallurgy txheej txheem los tsim cov hlau kub kub, tuaj yeem daws cov teeb meem saum toj no.Vim tias cov hmoov me me, hmoov txias ceev, tshem tawm kev sib cais, txhim kho kev ua haujlwm kub, qhov qub casting alloy rau hauv kub ua haujlwm deformation ntawm high-temperature alloys, yield zog thiab qaug zog zog yog txhim kho, hmoov high-temperature alloy rau ntau lawm -lub zog alloys tau tsim txoj kev tshiab.