Hlau-raws li alloy / Nickel-based alloy / Nickel-based alloy / Corrosion resistant superalloy superalloy phaj

Nickel-based superalloys yog ib chav kawm ntawm nag lossis daus ntxiv dag zog alloys uas ua tau zoo nyob rau hauv qhov chaw kub kub. Cov khoom kub kub zoo heev ntawm npib tsib xee-raws li superalloys tau ua rau kev siv cov chav kawm ntawm cov hlau no rau hauv ntau qhov kev siv aerospace.

Hlau-based superalloy yog ib hom superalloy. Nws yog tus cwj pwm los ntawm kev ntxiv lwm cov ntsiab lus ntawm lub hauv paus ntawm hlau rau alloying. Raws li cov hlau-raws li superalloys yog nickel-based superalloys thiab cobalt-based superalloys.

Cobalt-based superalloys yog cov ntaub ntawv siv nyob rau hauv qhov kub thiab txias ib puag ncig nrog zoo kub kub lub zog, corrosion kuj thiab hnav tsis kam. Cobalt-based superalloys feem ntau yog tsim los ntawm cov khoom xws li cobalt, chromium, tungsten, npib tsib xee thiab txhuas.

Corrosion resistant super alloys muab ib qho kev nce rau hauv lub zog txhua yam, tiv thaiv thermal deformation, thiab tiv thaiv corrosion piv rau cov tsoos alloys, yuav tsum muaj kev saib xyuas tsawg dua thiab zoo dua tiv taus qhov hnyav. Kev siv zog tab tom ua kom muaj kev tiv thaiv corrosion tshiab super alloys xws li aluminium-based super alloys, thiab tsim cov txheej txheem tshiab ntawm kev tsim khoom xws li radiolysis uas siv nano-particle synthesis rau polycrystalline tsim.

Qhov kub thiab txias tsis kam thiab corrosion kuj ntawm superalloy tsuas yog nyob ntawm nws cov tshuaj muaj pes tsawg leeg thiab cov qauv. Siv Inconel718 npib tsib xee-raws li deformed superalloy ua piv txwv, cov hlau muaj γ matrix theem, δ theem, carbide, thiab lub zog γ' thiab γ "theem. Cov tshuaj lom neeg thiab cov qauv matrix ntawm Inconel718 alloy qhia nws cov khoom siv dag zog, lub zog yield 5 thiab tensile zoo dua li cov hlau ntau dua 4 lub sij hawm. 45 steel qauv ruaj khov thiab muaj ntau yam ntxiv dag zog rau nws cov khoom zoo heev.

Vim lub complex thiab hnyav ua hauj lwm ib puag ncig ntawm superalloys, kev ncaj ncees ntawm machined nto plays lub luag hauj lwm tseem ceeb heev nyob rau hauv nws cov kev ua tau zoo. Txawm li cas los xij, superalloy yog ib qho nyuaj rau kev ua cov khoom siv, nws cov khoom micro-strengthening hardness yog siab, qib ntawm kev ua hauj lwm hardening yog loj, thiab nws muaj siab shear stress thiab tsawg thermal conductivity, txiav quab yuam thiab txiav kub nyob rau hauv lub txiav cheeb tsam, feem ntau tshwm sim nyob rau hauv kev ua ntawm tsawg nto zoo, lub cuab tam kev puas tsuaj yog heev hnyav thiab lwm yam teeb meem. Nyob rau hauv tej yam kev mob, txheej txheej ntawm superalloy yuav tsim teeb meem loj heev xws li hardened txheej, residual stress, dawb txheej, dub txheej thiab grain deformation txheej.

Superalloys yog cov khoom siv hluav taws xob kub ntawm cov npib tsib xee, hlau-nickel, thiab cobalt uas tuaj yeem siv rau qhov kub thiab txias, feem ntau> 70% ntawm lawv cov kub melting. Lawv tuaj yeem siv rau qhov kub siab tshaj 1050 ° C nrog kev mus ncig txog 1200 ° C. Cov yam ntxwv ntawm qhov kub thiab txias no ua rau nws tsim nyog hloov tus neeg sib tw rau Tungsten Carbide hauv Pick Up daim ntaub ntawv.

Cov khoom siv dav tshaj plaws ntawm Superalloy yog cov khoom siv nickel uas muaj cov ntsiab lus siab ntawm chromium, hlau, titanium, cobalt thiab lwm yam alloying ntsiab. Raws li nrog rau lwm cov khoom siv hlau, cov khoom ntawm superalloys tuaj yeem hloov kho nrog ntau yam kev kho cua sov thiab / lossis annealing thiab quenching. Piv nrog rau lwm cov khoom siv, Superalloys muaj qhov siab tshaj plaws kev pab cuam kub thiab siab tshaj hardness qhov tseem ceeb. Lub zog ntawm Superalloys ua rau nws qhov kev xaiv zoo tshaj plaws rau Carbide hauv daim ntawv cog lus siab zog (> 1kg).