Nkag siab qhov zoo thiab cov khoom zoo ntawm cov nickel-based superalloys

Nickel-based superalloys tau siv dav hauv ntau qhov kev lag luam vim lawv qhov kev ua tau zoo, tshwj xeeb tshaj yog nyob rau hauv kev lag luam aerospace, lub zog thiab tshuaj lom neeg kev lag luam. Cov hlau no feem ntau yog tsim los ntawm npib tsib xee thiab ua ke nrog lwm cov hlau alloying los tsim lub zog siab, kub tsis kam, oxidation tsis kam thiab corrosion kuj. Lawv tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev hauv qhov kub thiab txias ib puag ncig, yog li lawv tuaj yeem ua lub luag haujlwm zoo hauv ntau qhov kev thov xav tau.

1. Qhov zoo ntawm nickel-based superalloys

1) Lub zog kub kub: Nickel-based superalloys tuaj yeem tswj tau lub zog siab thiab muaj peev xwm thauj khoom zoo hauv qhov kub ntawm 650 degree txog 1000 degree, kom lawv muaj cov khoom zoo heev hauv qhov kub thiab txias.

2) Oxidation thiab corrosion kuj: Cov hlau muaj feem ntau ntawm chromium thiab lwm yam alloying ntsiab xws li txhuas thiab titanium, uas tuaj yeem tsim cov txheej oxide tuab thiab tiv thaiv cov hlau los ntawm oxidation thiab corrosion.

3) Creep kuj: Los ntawm cov khoom siv ntxiv dag zog, nag lossis daus ntxiv dag zog thiab cov ciam teb ntxiv dag zog, nickel-raws li superalloys qhia pom kev nkag siab zoo heev thiab tuaj yeem tswj tau cov qauv ruaj khov nyob rau hauv qhov kub thiab txias tas li.

4) Kev ua tau zoo qaug zog: Nickel-based high-temperature alloys muaj zog qaug zog thiab tawg toughness, yog tsim rau cov khoom raug rau cyclic loads, thiab muaj peev xwm tswj tau qhov kev ua tau zoo nyob rau hauv qhov kev hloov kub thiab kev ntxhov siab.

5) Kev ruaj ntseg ntawm lub koom haum: Thaum lub sij hawm siv mus sij hawm ntev, nickel-based high-temperature alloys tuaj yeem tswj tau lub microstructure ruaj khov, uas yog qhov tseem ceeb rau kev tswj xyuas lawv cov kev ua tau zoo.

2. Cov khoom zoo ntawm cov nickel-based high-temperature alloys

1) High degree ntawm alloying: Nickel-based high-temperature alloys tuaj yeem yaj ntau yam alloying ntsiab lus, xws li tungsten, molybdenum, cobalt, silicon, hlau, thiab lwm yam. ua kom nws muaj ntau yam kev siv.

2) Kev ua haujlwm zoo: Nickel-based high-temperature alloys tuaj yeem ua tiav thiab tsim los ntawm forging, dov, casting thiab lwm yam txheej txheem, thiab tsim nyog rau kev tsim khoom nrog cov duab nyuaj. Txawm hais tias tej zaum yuav muaj qee qhov kev sib tw thaum lub sijhawm ua cov txheej txheem, cov teeb meem no tuaj yeem daws tau zoo nrog cov txheej txheem ua tiav thiab kev ua kom zoo dua qub.

3) Kev ua haujlwm ntev ntev: Nickel-based high-temperature alloys tuaj yeem tswj kev ua haujlwm ruaj khov thaum siv mus ntev, thiab tsim nyog rau qhov chaw ua haujlwm hauv qhov chaw kub kub ntev ntev, xws li lub tshuab dav hlau, roj turbines thiab lwm yam khoom siv tseem ceeb.

4) Kev siv dav dav: Vim nws qhov kev ua tau zoo tshaj plaws, nickel-raws li kub-kub alloys muaj kev thov dav dav hauv aerospace, zog, tshuaj lom neeg kev lag luam, nkoj tsim thiab lwm yam haujlwm. Piv txwv li, nyob rau hauv aerospace teb, nickel-raws li high-temperature alloys yog cov ntaub ntawv tseem ceeb rau aircraft xyaw thiab aerospace cov cuab yeej; nyob rau hauv lub zog teb, nws yog siv los tsim boiler raj, roj turbines thiab lwm yam khoom; nyob rau hauv kev lag luam tshuaj, nws yog siv los tsim tshuaj reactors, high-temperature heat exchangers thiab lwm yam khoom siv.

Nickel-raws li high-temperature alloys muaj kev ua tau zoo nyob rau hauv high-temperature ib puag ncig vim lawv zoo heev kub-kub lub zog, oxidation kuj, corrosion kuj thiab thermal qaug zog kev ua tau zoo. Nyob rau tib lub sijhawm, nws qhov zoo xws li qib siab alloying, kev ua haujlwm zoo thiab kev ua haujlwm ntev ntev kuj ua rau nws yog ib qho tseem ceeb ntawm cov khoom tseem ceeb hauv ntau qhov chaw.