1. Dab tsi yog ib tug nickel - raws superalloy
Ib npib tsib xee - based supalloy yog qhov siab- Kev ua tau zoo xim ntawm Nickel (feem ntau suav nyiaj rau 50% lossis ntau dua ntawm nws cov muaj tag nrho). Nws yog tshwj xeeb engineered kom muaj cov khoom siv thev naus laus zis tshwj xeeb, thiab muaj kev vam meej rau ntawm 600-1200 ° C), ntau txog li 600-1200 ° C), muaj xws li 600-1200 ° C)
Tsis zoo li cov alloys, tsib xee -}}}} - ni₃al kev ua lub zog. Cov yam ntxwv no ua rau lawv irreplaceable hauv qhov tseem ceeb siab {} {} {{5} {{{{{}} cov khoom siv kub.
2. Qhov sib xyaw ntawm Nickel Superallloys
Nickel -} based supallots yog complex, multi- cov kab ke, nrog npib tsib xee. Lawv cov lus tau ua tib zoo txiav kom ua tiav kom ua tiav cov khoom tshwj xeeb, thiab cov khoom tseem ceeb tuaj yeem faib tau los ntawm lawv cov haujlwm:
| Qeb ntawm lub caij | Thawj coj ua piv txwv | Lub zog ua haujlwm |
|---|---|---|
| Matrix caij | Npib tsib caug (ni) | Ua hauj lwm raws li lub hauv paus qauv; Muab kev nkag siab thiab tshuaj lom neeg ruaj khov. Feem ntau yog 50 -80% ntawm alloy. |
| Nag lossis daus hardening ntsiab | Aluminium (Al), Titanium (ti), Niobium (NB), TANTALUM (TA) | Daim Ntawv Intermetallic theem (piv txwv li, γ '- ni₃al {{}}} kub lub zog thiab creep resistance. |
| Cov khoom -} Kev daws teeb meem ntxiv dag zog | Chromium (CR), cobalt (CO), Molybdenum (mo), tungsten (w) | Dissolve uniformly nyob rau hauv lub npib tsibel kom nce nws lub zog tag nrho thiab ruaj khov ntawm qhov kub; Kuj txhim kho tsis kam mus rau kev qaug zog. |
| Corrosion / oxidation tsis kam | Chromium (CR), txhuas (al), silicon (si), yttrium (y) | Ua ib qho ntom ntom, cov txheej txheej zoo nkauj (piv txwv li, qoob, thaiv cov npoo av, tiv thaiv kev ua kom loj lossis xeb hauv chaw hnyav. |
| Grain Ciam ciam teb tau muaj zog | Boron (b), zirconium (zrconium (ZR), carbon (c) | Cegregate ntawm cov ciaj ciam nplej rau inhibit qoob loo kev loj hlob thiab txo qhov kev pheej hmoo ntawm kev sib tsoo intergranular, tshwj xeeb tshaj yog nyob rau hauv high {}} kub ntxhov siab. |
Me kab kawm (piv txwv li, hafnium, vanadium) kuj tseem yuav ntxiv rau hauv cov khoom me me kom zoo xws li Weldability lossis thermal conductivity.
3. Cov piv txwv ntawm Nickel - bued supallloys
Nickel -} Raws supallloys yog dav siv thoob plaws kev lag luam, nrog rau cov qib kawm tau zoo rau cov kev siv tshwj xeeb. Hauv qab no yog cov piv txwv tseem ceeb:
Inconel 718
Ib qho ntawm cov feem ntau siv nickel - based supallloys, Inconel 718 muaj ~ 51% NB, thiab me me ntawm Al / TI. Nws muaj cov creep zoo heev nce mus txog 650 ° C thiab Adminiteal Weldability. Cov kev siv cov ntawv siv uas suav nrog Aerospace lub cav sib xyaw (cov tshuaj khib nyiab, cov roj av), roj av thiab roj thiab roj hauv qab cov cuab yeej.
Ib qho ntawm cov feem ntau siv nickel - based supallloys, Inconel 718 muaj ~ 51% NB, thiab me me ntawm Al / TI. Nws muaj cov creep zoo heev nce mus txog 650 ° C thiab Adminiteal Weldability. Cov kev siv cov ntawv siv uas suav nrog Aerospace lub cav sib xyaw (cov tshuaj khib nyiab, cov roj av), roj av thiab roj thiab roj hauv qab cov cuab yeej.
Inconel 625
Muaj los ntawm ~ 61% ni, 21.5% CR, 9% MO, thiab tshuaj noj qab zib, acidic {{{{{}} lub zog kom txog 980 ° C. Nws yog siv rau hauv cov khoom siv ua tshuaj (cov tshuaj tiv thaiv, kev sib hloov cua sov), cov khoom siv hluav taws xob, thiab tshuab hluav taws xob tiv thaiv.
Muaj los ntawm ~ 61% ni, 21.5% CR, 9% MO, thiab tshuaj noj qab zib, acidic {{{{{}} lub zog kom txog 980 ° C. Nws yog siv rau hauv cov khoom siv ua tshuaj (cov tshuaj tiv thaiv, kev sib hloov cua sov), cov khoom siv hluav taws xob, thiab tshuab hluav taws xob tiv thaiv.
Waspaloy
Ib qho nag lossis daus - Harden Alloy nrog ~ 58% NI, thiab 1.4% al / ° Nws thawj qhov kev siv yog nyob rau hauv cov ntawv thov lim dej, xws li tshuab luam yeeb, combustor hnab yas, thiab tom qab cov khoom sib xyaw.
Ib qho nag lossis daus - Harden Alloy nrog ~ 58% NI, thiab 1.4% al / ° Nws thawj qhov kev siv yog nyob rau hauv cov ntawv thov lim dej, xws li tshuab luam yeeb, combustor hnab yas, thiab tom qab cov khoom sib xyaw.
HAYES 282
Qhov no alloy (~ 49% ni, 22% cr, 18% co, 8.5% al) yog tsim rau high} qhov kub thiab txias. Nws yog ib txwm ua haujlwm hauv cov roj turbine kub - seem (cov ntawv hloov mus, tsis muaj muaj.
Qhov no alloy (~ 49% ni, 22% cr, 18% co, 8.5% al) yog tsim rau high} qhov kub thiab txias. Nws yog ib txwm ua haujlwm hauv cov roj turbine kub - seem (cov ntawv hloov mus, tsis muaj muaj.
CMSX-4
Ib qho ib qho -} Crystal nickel {}}} {}}}}}} ° C). Nws ib qho tib yam {14 14}}}} crystal qauv tshem tawm cov ciaj hluav taws xob, xws li cov kev siv hluav taws xob feem ntau, rau cov hluav taws xob siab tshaj plaws hauv cov dav hlau siab.
Ib qho ib qho -} Crystal nickel {}}} {}}}}}} ° C). Nws ib qho tib yam {14 14}}}} crystal qauv tshem tawm cov ciaj hluav taws xob, xws li cov kev siv hluav taws xob feem ntau, rau cov hluav taws xob siab tshaj plaws hauv cov dav hlau siab.
Udimet 700
Muaj los ntawm ~ 53% NI, 19% CR, 15% CE, 5% MO, thiab 4.3% al / ti, creep resistance txog li 730 ° C. Nws yog siv nyob rau hauv Aerospace turbine hniav, foob pob zeb lub cav sib xyaw, thiab siab- kub fasteners.
Muaj los ntawm ~ 53% NI, 19% CR, 15% CE, 5% MO, thiab 4.3% al / ti, creep resistance txog li 730 ° C. Nws yog siv nyob rau hauv Aerospace turbine hniav, foob pob zeb lub cav sib xyaw, thiab siab- kub fasteners.
