Yog hastelloy ib tug superally -} kev paub

1. Ua ntej ua ntej: Dab tsi txhais tau tias Superalloy?

Ua ntej kev txheeb xyuas hastelloy, nws yog qhov tseem ceeb los tsim cov ntsiab lus tseem ceeb uas paub qhov txawv supalloys los ntawm alloys pom. Superalloy (tseem hu ua "siab - Kev Ua Tau Zoo Alloy") yog qhov zoo rau kev ua haujlwm dhau:

Tshwj xeeb siab - kub tshuab ruaj khov: Nws khaws cov tensile tseem ceeb tensile lub zog, nkees tsis kam, thiabcov quav(Kuj tiv thaiv zuj zus, deformation tas mus li tsis tu ncua) ntawm kev kub ntxhov siab tshaj 600℃(1112 Cov alloys cov pa (piv txwv li, alloys alloys) muag muag, deform, lossis swb sai sai ntawm qhov kub.

Superior puag ncig tsis kam: Nws tiv thaiv oxidation (xeb ntawm high kub), corrosion (los ntawm cov tshuaj lom neeg, lossis roj av (}}

Kev tswj, siab - macktructure: Nws cov atomic thiab microscale qauv (piv txwv li precipitates ntxiv dag zog yam tsis muaj kev ua kom muaj zog, txawm tias hauv qab cua hauv thermling (rov ua cua sov thiab txias).

Hastelloy ntsib thiab tshaj tag nrho cov qauv no, ua nws kev faib tawm ua tus unamalloy unambiguous.

2. Hastelloy txoj kev muaj pes tsawg leeg: Ua rau Superalloy ua haujlwm

Hastelloy tsis yog ib qho khoom siv tab sis ib tsev neeg ntawm Nickel - butered supallloys (Nick5% ntawm nws cov khoom lag luam) tsim thiab trademarked los ntawm Haynes International. Nws cov ntsiab lus alloy tau raug xaiv los phiaj superally {}} Hastelloy X-2) kom haum rau cov ntawv thov sib txawv. Cov khoom tseem ceeb muaj xws li:

Sib ntxaws alloy	Cov ntsiab lus raug (los ntawm qhov hnyav)	Lub luag haujlwm hauv kev ua tiav superalloy traits
Npib tsib caug (ni)	40–65%	Thawj lub hauv paus; Muab cov qauv siv khov kho crystalline ruaj khov (FCC, ntsej muag - chaw nyob ntawm lub hauv paus siab, tsim lub hauv paus rau lub zog thiab corrosion tsis kam.
Chromium (cr)	15–25%	Tseem ceeb rau oxidation thiab corrosion tsis kam; Ua ib qho nyias nyias, tus qauv chromium (cr₂o₃) txheej) ntawm cov npoo uas ua raws li kev thaiv kev oxygen, acids, thiab ntsev.
Molybdenum (mo)	10–28%	Txhawb siab siab - kub lub zog (los ntawm qeeb atomic diffusion, uas ua rau nkag) thiab txhim kho kom tsis kampitting corrosion(ib daim ntawv hauv zos ntawm kev puas tsuaj rau hauv qab ntsev lossis acidic ib puag ncig).
Tungsten (w)	0-15% (Hauv Cov Qeb Zoo Li C-276)	Kev txhawb cov crep ua thiab tensile lub zog ntawm huab cua sov (siab dua 1000 degree) los ntawm kev ntxiv "pinning ntsiab lus" rau kev tiv thaiv kev tshem tawm cov kev tshem tawm (tus yuam sij ntawm deformation).
Hlau (FE)	0-20% (hauv qib nyiam x)	Improves workability (ease of shaping via forging or rolling) without compromising high-temperature performance, making it more cost-effective for large components.
Cobalt (CO)	0-10% (hauv qee qhov siab- lub zog kawm tau)	Txhim kho thermal stability thiab creep kuj, tshwj xeeb hauv cov ntawv thov raug mob ntev tshaj plaws saum toj no 1100℃(piv txwv li cov foob pob hluav taws).

Qhov kev txiav txim siab no yog thawj qhov laj thawj hastelloy tsim nyog yog superalloloy: Txhua qhov kev xaiv tau xaiv los daws cov kev ua tsis tiav ntawm alloys hauv cov xwm txheej.

3. Hastelloy cov khoom: txuam nrog superalloy yuav tsum tau

Hastelloy txoj kev ua tau ncaj qha ua ke nrog qhov xav tau uas txhais tau superalloys. Hauv qab no yog nws cov khoom tseem ceeb tshaj plaws, nrog cov piv txwv ntawm lawv muaj ntau tshaj li Alloy muaj peev xwm:

a. High - kub lub zog & creep kuj

Creep (qeeb deformation nyob rau hauv kev ntxhov siab tas li) yog thawj hom ntawv tsis ua tiav rau cov ntaub ntawv hauv cov roj av, dav hlau tshuab, lossis muaj chaw ua kom sov. Hastelloy tiv siab yuam kev zoo:

Thaum 800℃(1472 Qib F), hastellloy x khaws ibLub zog tensile(Kev ntxhov siab tshaj plaws ua ntej tawg) ntawm ~ 400 mpa-}}}}}}}}}} {mpa ntawm tib tus kub).

Thaum 1000℃(1832 Qib F), Hastelloy c -}}}}}}}}}}}} nws tseem ua tsis muaj kev ntxhov siab nyob rau hauv 100,000 teev ntawm 100 MPA kev ntxhov siab. Los ntawm kev sib piv, cov hlau kub (piv txwv li, 309 stainless hlau) tsis muaj tsawg dua 100 teev nyob rau hauv tib qho kev mob.

Qhov no yog ua tau vim nws MicrcS's FCC qauv tseem ceeb, thaum Molybdenum thiab Tungsten Phases) uas "kaw" atomic txav, tiv thaiv nkag.

b. Tshwj kev pab cuam corrosion & oxidation tsis kam

Superalloys yuav tsum withstand tsis yog cua sov, tab sis kuj tseem txhoj puab heev -} qhov tseev kom muaj hastelloy exceler ntawm:

Acid Refantance: Hastelloy b-} 2 yog makrochloric acid (hled

Oxidation tsis kam: Thaum 1000℃(1832 Qib F) nyob rau hauv huab cua, haastelloy x tsim cov tuab, tus kheej {} kho cov roj chromium kho kom tiv thaiv oxidation ntxiv. Tom qab 1,000 teev ntawm kev nthuav tawm, nws txoj kev ntsuas phaus (kev ntsuas ntawm oxidation) yog tsawg dua 0.1 mg / cms {} long), uas poob ~ 1 mg / cms hauv tib qho kev sim.

Sulfidation Kuj: Hauv Sulphur - Cov pa roj ntsha ua haujlwm (piv txwv li cov pa roj ntsha

c. Thermal Stability & Ductility

Tsis zoo li cas brittle siab - kub (piv txwv li}

Ntawm 900℃(1652 Qib F), Hastelloy C-276 muaj ibelongation(Feem pua ntawm ncab ua ntej tawg) ntawm ~ 25%-} txaus rau kev siv vuam ntawm vuam los yog kev zam txim, uas yog tsis yooj yim sua nrog cov ntaub ntawv loj.

Nws kuj tseem tivThermal qaug zog(kev tawg los ntawm cov cua sov dua / cua txias Cycles). Piv txwv li, hauv JET lub cav sib txuas (qhov twg kub viav vias ntawm 20℃mus rau ntau yam tsis muaj qhov tawg ntau dua li cov cua sov {}}} tiv taus alloys.

info-442-444 info-441-440

info-441-440 info-443-443

4. Hastelloy cov ntawv thov: superalalloy siv rooj plaub

Cov khoom siv tau faib tawm tau ntxiv los ntawm nws cov ntawv thov, thiab Hastelloy tau siv tshwj rau hauv cov xwm txheej uas koj xav tau superalloy ua haujlwm. Cov piv txwv tseem ceeb muaj xws li:

Aerospace & Tiv Thaiv:

Hastelloy X yog siv nyob rau hauv Dav Hlau Cav sib txuas, tom qab kev ua kom sov, thiab kev tawm tsam mus txog 1000-1200℃rau oxidation thiab nkag yog qhov tseem ceeb.

Nws kuj yog siv nyob rau hauv cov foob pob hluav taws tshuab nozzles, mus txog 2000 degree) thiab corrosive ruels (piv txwv li, Hydrazine) yuav tsum muaj ob qho tib si thermal.

Kev Lag Luam:

Hastelloy C-276 tau ua haujlwm hauv Reactors, kev sib pauv cua sov, thiab piping rau kev ua acids (piv txwv li sulfuric acid, nitric acid) thiab lom. Nws kev tawm tsam rau pitting thiab crevice corrosion tiv thaiv kev lom zem uas tuaj yeem ua rau muaj kev nyab xeeb lossis kev tsim khoom rau kev nyab xeeb.

Zog & Lub Zog Hluav Taws Xob:

Nyob rau hauv thee -}}} pa taws ntau (piv txwv li, boiler hlab) tiv taus sulfidation thiab siab {} kub corrosion. Nyob rau hauv lub hwj huam nuclear fais fab ntoo, nws yog siv nyob rau hauv roj cladding thiab cua sov sib pauv vim nws qhov ruaj khov nyob rau hauv radiation ib puag ncig.

Muaj Cov Furnaces:

Hastelloy yog siv los ua cov cub hluav taws xob, cua sov hais, thiab cov siv tawv cua sov thiab conveyor siv thaum 800-1100 degree. Nws lub peev xwm los khaws lub zog thiab tawm tsam oxidation ua kom muaj kev pabcuam ntev ntev, txo cov nqi txij nkawm.

5. Vim li cas Hastelloy tsis meej pem nrog alloys

Cov neeg thuam yuav nug: yuav hastelloy ua yuam kev rau tus qauv nickel alloy (piv txwv li, mij) lossis stainless hlau? Cov lus teb tsis muaj -}} vim nws cov kev ua tau zoo ntawm cov alloys ua kom loj heev:

Ib qho stainless hlau tivthaiv (piv txwv li, 310) yuav swb rau 100 teev ntawm 1000℃hauv qab kev ntxhov siab, thaum haastelloy kav 10x ntev dua.

Monel 400 (A Nickel - hydrophes alloy) hauv 10 degree, thaum haastelloy b-2 tseem lawm.

Cov kev sib txawv no tsis tau nce - Lawv yog transformative, tso hastelloy khov kho nyob rau hauv lub superalloy qeb.

Hastelloy yog superalloy los ntawm txhua qhov kev txhais: nws muaj lub nickel - kev ua haujlwm zoo, thiab yog siv tshwj xeeb hauv cov ntawv thov uas thov superalloy muaj peev xwm. Nws cov xwm txheej uas yog ib tug thawj coj Nickel {{3} based supalloy yog thoob ntiaj teb lees paub hauv cov ntaub ntawv txuj ci, aerospace, thiab kev lag luam engineering.

Yog hastelloy supalloy