Puas yog INCONEL muaj zog dua stainless hlau?
Inconel
Inconel yog ib chav kawm ntawm npib tsib xee-chromium-based superalloys nrog kev ua haujlwm siab corrosion, oxidation tsis kam, siab kub lub zog, thiab creep kuj. Inconel muaj peev xwm tiv taus qhov kub thiab txias heev vim muaj ob yam.
Ua ntej, lub intermetallic compound Ni3Nb yog tsim nyob rau hauv lub gamma bis (ɣ'') theem. Qhov no intermetallic theem ua raws li "kua nplaum" ntawm cov qoob loo ciam teb. Qhov "kua nplaum" no tiv thaiv cov nplej los ntawm qhov loj me thaum rhuab mus rau qhov kub siab (feem ntau, cov nplej me me txhais tau tias muaj zog dua, cov nplej loj dua txhais tau tias ntau dua ductility). Qhov thib ob, Inconel tiv taus corrosion heev vim yog txheej txheej passivation tsim thaum rhuab. Ob yam no ua rau Inconel yog ib qho zoo tagnrho alloy rau kev siv xws li kub-section gas turbines mus rau qhov tob hauv hiav txwv drilling. Yog li dab tsi yog qhov tsis zoo ntawm cov hlau no? Lawv kim heev, nyuaj ua hauj lwm nrog thiab nyuaj rau txheej txheem.
Stainless hlau
Stainless hlau yog tus cwj pwm los ntawm cov ntsiab lus chromium ntau dua 10.5% los ntawm qhov hnyav. Muaj tsib pawg ntawm stainless hlau:
austenite
ferrite
martensite
duplex
nag lossis daus hardening
Cov hlau stainless no muaj npe tom qab lub microstructure tsim nyob rau hauv cov alloys. Duplex stainless hlau yog ib qho sib xyaw ntawm austenitic thiab ferritic microstructures, thiab nag lossis daus hardening txhais tau tias precipitates tuaj yeem tsim kom muaj zog ntawm hom stainless hlau no. Lub zog thiab corrosion kuj ntawm stainless hlau nyob ntawm cov microstructures. Piv txwv li, austenitic stainless steels yuav yog cov feem ntau ductile stainless hlau qeb, tab sis kuj yog feem ntau corrosion-resistant. Ntawm qhov tod tes, hom martensite feem ntau muaj zog dua tab sis tsawg dua corrosion kuj. Austenitic stainless hlau muaj ib tug loj equiaxed grain qauv piv rau cov me me tshuab dhos qauv nyob rau hauv martensitic stainless hlau, uas muab nws cov khoom.
Tag nrho cov hlau tsis muaj steel muaj kev tiv thaiv corrosion ntau dua li cov hlau ib txwm siv thiab siv rau hauv txhua yam los ntawm cov khoom siv hauv chav ua noj thiab cov khoom siv hauv tsev rau kev siv tshuaj lom neeg thiab khoom noj.
Inconel vs. Stainless hlau: Qhov txawv yog dab tsi?
Rau ib yam, Inconel yog kim kim dua stainless hlau alloys. Inconel kuj muaj kev tiv thaiv corrosion zoo dua thiab lub zog ntawm qhov kub thiab txias. Txawm li cas los xij, cov hlau xws li 17-4PH stainless hlau muaj zog dua Inconel ntawm qhov kub thiab txias. Thaum xaiv ntawm ob qho sib txawv alloys, qhov tseem ceeb ntawm kev txiav txim siab yog tus nqi, qhov kub thiab lub zog. Yog tias tus nqi qis dua tab sis muaj zog tiv thaiv yuav tsum tau, stainless hlau yuav yog qhov kev xaiv zoo tshaj plaws. Yog hais tias huab cua tseem ceeb Cheebtsam yuav tsum tau kub, ces Inconel yog ib tug zoo alloy rau daim ntawv thov.
