Dab tsi yog cov khoom siv Superalloy?

Dab tsi yog cov khoom siv superalloy?

Dab tsi yog cov khoom siv superalloy?

Superalloy yog cov khoom siv ua haujlwm siab, feem ntau muaj cov npib tsib xee, cobalt, thiab hlau, ua ke nrog ntau yam khoom xws li chromium, molybdenum, thiab titanium. Cov alloys paub txog lawv qhov tshwj xeeb txhua yam muaj zog, tiv thaiv corrosion, thiab muaj peev xwm tswj tau lawv cov khoom ntawm qhov kub thiab txias. Superalloys feem ntau yog siv rau hauv cov ntawv thov uas cov ntaub ntawv raug mob hnyav, xws li hauv kev tsim cov tshuab dav hlau, lub zog tsim hluav taws xob, thiab cov khoom siv hluav taws xob kub kub.

Raws li cov yam ntxwv ntawm kev ua tau zoo saum toj no thiab qib siab ntawm alloying ntawm high-temperature alloys, lawv kuj hu ua "superalloys" thiab yog cov khoom tseem ceeb uas siv dav hauv aviation, aerospace, roj av, tshuaj lom neeg kev lag luam, thiab nkoj. Raws li cov ntsiab lus matrix, high-temperature alloys tau muab faib ua hlau-raws li, npib tsib xee-based, cobalt-based thiab lwm yam high-temperature alloys. Qhov kev pab cuam kub ntawm cov hlau-raws li high-temperature alloys feem ntau tsuas yog ncav cuag 750 ~ 780 degree. Rau cov khoom siv hluav taws xob uas siv rau qhov kub siab dua, cov nickel-based thiab refractory hlau-raws li alloys yog siv. Nickel-raws li high-temperature alloys nyob rau hauv ib qho tseem ceeb txoj hauj lwm nyob rau hauv tag nrho cov teb ntawm high-temperature alloys. Lawv tau dav siv los tsim cov khoom kub tshaj plaws ntawm aviation dav hlau cav thiab ntau yam roj turbines.