Molybdenum-rhenium Alloy Ntawv Nyiaj

Molybdenum-rhenium alloy yog ib qho hlau uas muaj molybdenum ua lub hauv paus thiab rhenium ua alloying caij. Cov alloy nthuav tawm cov nyhuv rhenium los txhim kho cov yas, thiab cov ntsiab lus rhenium hauv cov hlau feem ntau yog 11% mus rau 50% (feem ntau).

Refractory hlau molybdenum tsis tsuas yog muaj thermal conductivity, hluav taws xob conductivity, corrosion kuj, tab sis kuj muaj ib tug tsawg coefficient ntawm thermal expansion, siab hardness, zoo kub kub zog, yog li molybdenum nyob rau hauv electronics kev lag luam, aerospace kev lag luam, lub zog kev lag luam thiab lwm yam kev lag luam muaj. ntau yam kev siv. Txawm li cas los xij, cov hlau ntshiab molybdenum kuj nkig nyob rau hauv chav tsev kub, kev ua haujlwm tsis zoo, kev ua haujlwm vuam tsis zoo, yooj yim oxidation, nrog recrystallization brittleness thiab lwm cov ntsiab lus, tag nrho cov uas txwv tsis pub siv cov ntshiab hlau molybdenum. Ntxiv ib qho nyiaj ntawm cov ntsiab lus alloying xws li C, B, K, Si, Al, Re thiab lub ntiaj teb tsis tshua muaj yog ib txoj hauv kev zoo los txhim kho brittleness ntawm hlau molybdenum. Ntawm lawv, lub luag hauj lwm ntawm alloying caij rhenium yog qhov tseem ceeb tshaj plaws, qhov sib ntxiv ntawm rhenium caij, tsis tsuas yog tuaj yeem txhim kho chav tsev kub ntawm molybdenum, kev ua haujlwm vuam, tab sis kuj tuaj yeem txhim kho qhov kub thiab txias ntawm molybdenum.

Txij li thaum nws tau pom tias Mo50Re alloy muaj cov yas zoo dua thiab muaj zog dua li molybdenum hauv xyoo 1955, ntau tus kws tshawb fawb tau ua tiav kev tshawb fawb ntxaws thiab tob ntawm cov khoom siv microstructure thiab kev siv tshuab ntawm molybdenum rhenium alloy. Nyob rau hauv kev tshawb fawb thaum ntxov, Lavxias teb sab Savitsky ua ib qho tseem ceeb pab rau nws tus kheej kev tshawb fawb tau nyob rau hauv nws monograph. Davidson et al. systematically kawm cov elastic tas li ntawm molybdenum-rhenium alloys.

Nyob rau hauv xyoo tas los no, molybdenum-rhenium alloys tau npaj los ntawm cov hmoov metallurgy txoj kev nruab nrab kub sintering los ntawm Garin li al., thiab Mannheim li al. Todd et al. Kawm txog cov khoom siv kho tshuab thiab microstructure ntawm ntau yam molybdenum-rhenium alloys. Bernd et al. tsom rau qhov kub kub qaug zog ntawm molybdenum-rhenium alloys. Vim yog tus nqi siab ntawm rhenium, Xing Yinghua li al. systematically kawm cov txiaj ntsig ntawm kev ntxiv me me ntawm rhenium ntawm microstructure zog ntawm molybdenum. Molybdenum-rhenium Alloys tsim los ntawm Rhenium Alloys, Inc., suav nrog molybdenum-rhenium alloy hmoov, xov hlau, nplooj ntawv, raj thiab rods. Nws cov khoom tseem ceeb yog Mo41Re, Mo44.5Re thiab Mo47.5Re. Tab sis vim hais tias rhenium yog kim, nyob rau hauv xyoo tas los no ntau tus kws tshawb fawb tau tsom rau cov alloys uas tsis tshua muaj rhenium cov ntsiab lus.

Kev tshawb fawb ntawm molybdenum-rhenium alloy Mannheim li al. pom tias tsis muaj cov kab nrib pleb pom tseeb hauv cov hmoov hlau metallurgy MO25Re thiab Mo50Re alloy ingot tom qab 25% deformation ntawm chav tsev kub. Nws kuj tau tshaj tawm tias molybdenum rhenium alloy ingot muaj 35% Re tuaj yeem deform ntau dua 90% ntawm chav tsev kub yam tsis muaj qhov tawg. Txawm li cas los xij, qhov qhib ntawm molybdenum rhenium alloy feem ntau yog xaiv rau kev ua haujlwm kub, qhov deformation kub ntawm qhov pib dhau yog ntau dua 1400 degree, thiab tus nqi deformation ntau dua 20%. Molybdenum-rhenium alloys tom qab qhib feem ntau ua tiav nyob rau hauv txias los yog txawm nyob rau hauv chav tsev kub. Recrystallization annealing yog nqa tawm thaum tag nrho deformation tus nqi nce mus txog 50% ~ 90%.

Mechanical zog - elastic zog ntawm molybdenum rhenium alloys
Ntshiab rhenium muaj qhov elastic modulus thib ob rau osmium, nrog tus nqi ntawm 468 GPa, thiab ntshiab molybdenum muaj qhov elastic modulus ntawm 330 GPa. Lub elastic modulus ntawm molybdenum rhenium alloy yog nruab nrab ntawm ob. Thaum cov ntsiab lus rhenium tsawg dua 52%, cov Young's modulus, shear modulus thiab Poisson tus piv nce nrog qhov nce ntawm rhenium cov ntsiab lus. Thaum cov ntsiab lus rhenium nce mus txog 43%, Young's modulus thiab shear modulus muaj tus nqi siab tshaj plaws. Lub caij rhenium tuaj yeem hloov pauv anisotropy ntawm molybdenum alloy, nrog rau kev nce ntawm rhenium cov ntsiab lus, qhov elastic tsis tu ncua nyob rau hauv cov kev taw qhia ntawm (100) txo, thaum lub elastic tsis tu ncua nyob rau hauv cov kev taw qhia ntawm (110) thiab (111) nce, thaum lub rhenium nce. Cov ntsiab lus yog 50%, molybdenum rhenium alloy coj zoo li isotropy, thiab elastic tas li yog tib yam hauv qhov sib txawv. cov lus qhia.

Mechanical zog ntawm molybdenum-rhenium alloys - lub zog thiab elongation
Rhenium tuaj yeem tsis tsuas yog txhim kho lub zog ntawm molybdenum ntawm chav tsev kub thiab kub, tab sis kuj txhim kho cov yas ntawm molybdenum. Lub zog tensile ntawm ntshiab molybdenum ntawm chav tsev kub yog li 65 0 MPa, thiab lub zog tensile ntawm molybdenum rhenium alloy nrog siab rhenium tuaj yeem ncav cuag ntau tshaj 1000MPa. Lub elongation ntawm ntshiab molybdenum ntawm chav tsev kub yog 0, thiab elongation ntawm molybdenum-rhenium alloy tuaj yeem ncav cuag ntau dua 20%. Ntawm 1473 K, lub zog tensile ntawm Mo47.5Re yog 230 MPa thiab elongation yog 8%, thaum lub zog tensile ntawm ntshiab molybdenum tsuas yog 100 MPa. Nrog rau qhov nce ntawm rhenium cov ntsiab lus, qhov kev ntxhov siab thiab qhov ntsuas tawv tawv nce, tab sis qhov kev ntxhov siab ntawm molybdenum-rhenium alloy yog tsawg dua li ntawm cov ntshiab rhenium. Yog li ntawd, kev ua haujlwm hardening tshwm sim ntawm molybdenum rhenium alloy yog me dua li ntawm cov ntshiab rhenium, thiab kev ua haujlwm ntawm molybdenum rhenium alloy yog zoo dua li cov ntshiab rhenium.

Molybdenum rhenium alloys Mechanical zog ntawm molybdenum rhenium alloys - creep zog
Cov cuab yeej kub siab creep yog qhov ntsuas tseem ceeb los ntsuas cov cuab yeej kub kub ntawm cov hlau. Bernd li al tau ua hauj lwm rau ntau yam ntawm molybdenum-rhenium alloys ntawm 1600 degree, 25 MPa. Piv nrog rau lwm cov molybdenum-rhenium alloys, Mo51Re alloy muaj ntau dua plasticity thiab siab dua tus nqi nkag, yog li nws lub sijhawm tawg yog luv dua.

Molybdenum rhenium alloy daim ntawv thov
Molybdenum rhenium alloy yuav siv tau raws li kev kub ceev rotating X-ray raj lub hom phiaj cov khoom, microwave kev sib txuas lus ntev lub neej daim phiaj phaj, qhov chaw reactor core cua sov raj, kub kub rauv cua sov caij, kub thermocouple thiab hais txog. Lub zog tensile thiab ductility resistivity ntawm molybdenum-rhenium alloys ntawm chav tsev kub nce nrog qhov nce ntawm rhenium cov ntsiab lus. Mo-5%Re thiab Mo-41%Re feem ntau yog siv los ua cov khoom siv thermocouple hlau rau cov khoom siv hauv aerospace. Mo-50%Re yog siv los ua cov khoom siv hluav taws xob kub.

Cim npe nrov: Tuam Tshoj molybdenum-rhenium alloy foil manufacturers, lwm tus neeg, Hoobkas