Hom superalloys

Lub hauv paus rau phau ntawv
Niaj hnub nim cov qauv yog qhov xav tau heev. Cov kws tsim khoom thiab cov neeg tsim qauv yog tas li kom tau txais kev lag luam uas rau kev ua tau zoo, thiav thiab nqi kho kom zoo. Kev lag luam lag luam yog nyob rau hauv lub xeev ntawm kev loj hlob tas li. Cov Qauv Tsim Qauv Tshiab, cov txheej txheem ntau lawm thiab cov khoom siv yog qhov tseem ceeb rau kev hloov tshiab.

Qee qhov kev lag luam tshwj xeeb xav tau, xws li Aerospace kev lag luam. Aerospace cov khoom lag luam yuav raug rau cov xwm txheej huab thaum lawv ua haujlwm lub neej. Cov txheej txheem thiab cov ntaub ntawv tsis txaus kom tau raws li cov qauv lag luam: Qhov no yog vim li cas thiaj li ib tug energace engineers siv cov ntaub ntawv xws li superalalloys.

Dab tsi yog superalloys?
Qhov tseem ceeb, superalloys yog cov khoom siv nrog cov kev txheeb cais huab. Cov yam ntxwv tseem ceeb ntawm superalloys muaj siab ruaj khov, huab siv tshuab lub zog, thermoelasticity thiab lub neej ntev. Cov cuab yeej tseem ceeb tshaj plaws ntawm superalloy yog nws lub peev xwm los ua haujlwm ntawm cov feem siab ntawm lub taw tes melting. Tag nrho cov khoom saum toj no ua superalallys qhov tseem ceeb rau kev lag luam aerospace.

Lub tswv yim qub los tsim cov ntaub ntawv tsim nyog rau kev ua haujlwm rau kev muaj lub siab tau los ntawm qhov kev muaj siab tuaj yeem coj peb siab dua thiab sai dua. Kev txhim kho ntawm superalloys yog ze txuas rau kev nthuav dav nrawm nrawm ntawm Aerospace kev lag luam tom qab Kev Tsov Rog Thoob Ntiaj Teb Zaum II.

Hom superalloys
Muaj ntau hom superalloys siv nyob rau hauv aerospace kev lag luam. Ib qho ntawm feem ntau siv hom yog titanium-based sitalloys. Ntshiab titanium muaj qhov ntom ntom ntom ntom, lub zog siab, thiab siab corrosion tsis kam. Tsis tas li ntawd, Titanium yog tib lub ntsiab uas hlawv nrog nitrogen. Titanium yog muaj zog li hlau, tab sis hnyav yuav luag ib nrab ntau. Cov khoom no ib leeg ua nws ib cov khoom zoo tshaj plaws rau kev lag luam aerospace, qhov twg qhov hnyav / muaj zog piv yog qhov tseem ceeb. Titanium yog tov nrog lwm cov ntsiab lus hauv cov kev sib tw tshwj xeeb kom txhawb ntxiv cov khoom ntiag tug.

Ib qho ntawm feem ntau siv titanium-raws li alloys yog lub ti {1} {{2} v alloy. Nws muaj aluminium thiab vanadium ntxiv rau titanium thiab feem ntau siv nyob rau hauv cockple, tis thawv, thiab cov qauv ceev rau kev ua lag luam dav hlau. Qhov no alloy ua pov thawj qhov sib npaug zoo xws li muaj zog, ductility, kub zog, weldabilies, tshuab hluav taws xob, thiab kev ua haujlwm kub. Ti -6 al {{{4 4}}}}}}}}}}} Resistant alloy tsim nyob rau hauv lub xyoo 1960s. Nws cov cua sov ua kom sov yog li 450˚c. Qhov no feem ntau siv nyob rau hauv compressor disks, thiab nws cov kev pabcuam sab saud yog 500˚c. Ti {-5 al {12}}}}}}}} Kuv tau hais txog lub zog loj thiab zoo heev bacture nyuaj tsim hauv Tebchaws Asmeskas thaum xyoo 1970. Nws cov cua sov ua kom sov yog li ntawm 350˚C. Hauv kev ua lag luam cov cav ntoo, tus kiv cua thiab cov ncej ua haujlwm tau tsim ua ib qho los txo qhov hnyav ntawm lub cav. Ti {-10 v -2 lom zem thiab muaj zog zoo thiab yog siv tau nyob rau hauv cov iav tsaws.

Ntxiv rau cov titanium-raws li alloys, cov hlau-raws li lwm chav kawm ntawm alloys uas feem ntau yog aerospace thiab kev lag luam rog. Qhov tseem ceeb, cov hlau sib dhos hlau yog cov alloys uas yog feem ntau muaj hlau. Qee qhov feem ntau siv hlau-raws li alloys yog stainless hlau, cam khwb cia hlau, thiab siab carbon hlau. Hlau-raws li alloys feem ntau nthuav tawm qhov sib npaug zoo ntawm cov khoom, suav nrog cov cua kub tiv, durability kuj, lub zog, thiab thermal elasticity. Txawm hais tias lawv tsis nthuav tawm cov haujlwm siab heev xws li titanium-raws li cov high-kub alloys, lawv yooj yim ntawm synthesis thiab nqi-ua hauj lwm ua rau lawv tsis muaj peev xwm.

Lwm qhov tseem ceeb ntawm alloy qeb nyob rau hauv aerospace thiab cov tub rog lag luam yog aluminium alloys. Lub cev hnyav-rau-lub zog piv ntawm RAW Aluminium yog qhov tseem ceeb hauv nws tus kheej. Ntxiv cov khoom siv nyiaj tooj liab, magnesium, siinc txhim kho cov khoom, ua zinc txhim kho cov khoom, ua rau aluminium alirots zoo tagnrho rau cov tub rog thiab cov ntawv thov Aerospace. Lub 7xxx series ntawm txhuas alloys yog cov siv feem ntau siv hauv kev siv cov ntawv thov ib pawg. Cov thawj kev sib sau ua ntej hauv 7xxx koob yog zinc, ua cov qeb no muaj zog tshaj txhuas alloy. Cov txiaj ntsig lub zog ntawm 7xxx series alloys tau ntau dua 500 MPA. Feem ntau cov 7xxx alloys yog al-zn-mg-cu thiab al-li-cu-mg.