Ubushushu be-recrystallization ye-lanthanum-doped molybdenum wire iphezulu kunocingo olucocekileyo lwe-molybdenum, kwaye kungenxa yokuba inani elincinci le-La2O3 linokuphucula iipropati kunye nesakhiwo socingo lwe-molybdenum.Ngaphandle koko, isiphumo sesigaba sesibini seLa2O3 sinokunyusa amandla obushushu begumbi locingo lwe-molybdenum kunye nokuphucula ubushushu begumbi emva kokwenziwa kwakhona.
Uthelekiso loBubushushu boBuyelelene kwakhona: I-microstructure yocingo olusulungekileyo lwe-molybdenum ngokucacileyo yandiswa kwi-900 ℃ kwaye yaphinda yahluzwa kwi-1000 ℃.Ngokunyuka kweqondo lokushisa kwe-annealing, iinkozo zokuvuselela kwakhona zinyuka, kwaye izicubu ze-fibrous zinciphisa kakhulu.Xa iqondo lobushushu le-annealing lifikelela kwi-1200 ℃, ucingo lwe-molybdenum luye lwaphinda lwenziwa ngokutsha, kwaye i-microstructure yayo ibonisa i-uniform equiaxed recrystallized grains.Njengoko iqondo lobushushu lisanda, iinkozo zikhula ngokungalingani kwaye zibonakala iinkozo ezirhabaxa.Xa lufakwe kwi-1500 ℃, ucingo lwe-molybdenum kulula ukuqhawuka, kwaye ubume bayo bubonisa iinkozo ezirhabaxa ezilinganayo.Ulwakhiwo lwefiber yocingo lwe-lanthanum-doped molybdenum lwandiswa emva kokuba lufakwe kwi-1300 ℃, kwaye imilo efana nezinyo ibonakala kumda wosinga.Kwi-1400 ℃, iinkozo ezihlaziyiweyo zavela.Kwi-1500 ℃, ukuthungwa kwefayibha kwehle kakhulu, kwaye ukwakhiwa kwakhona kwavela ngokucacileyo, kwaye iinkozo zakhula ngokungalingani.Ubushushu be-recrystallization ye-lanthanum-doped molybdenum wire iphezulu kune-molybdenum wire ecocekileyo, eyona nto ibangelwa yimpembelelo ye-La2O3 yesigaba sesibini.Isigaba sesibini seLa2O3 sithintela ukufuduka komda wokuziinkozo kunye nokukhula okuziinkozo, ngaloo ndlela ukwandisa ubushushu bokubuyisela kwakhona.
Ubushushu Begumbi Mechanical Properties Uthelekiso: Ukwandiswa kocingo lwemolybdenum olusulungekileyo luyenyuka ngokunyuka kwamaqondo obushushu e-anneal.Xa ubushushu be-anneal kwi-1200 ℃, ubude bufikelela kwixabiso eliphezulu.Ubude buyancipha xa ubushushu be-aneal bukhula.Ifakwe kwi-1500 ℃, kwaye ubude bayo buphantse bulingane no-zero.Ubude bocingo lwe-La-doped molybdenum luyafana nocingo lwemolybdenum olusulungekileyo, kwaye umlinganiselo wobude ufikelela kowona aphezulu xa ufakwe kwi-1200 ℃.Kwaye ke ubude buyancipha ngokunyuka kwamaqondo obushushu.Ekuphela kwento eyahlukileyo yinqanaba lokunciphisa licotha.Nangona ukolulwa kocingo lwe-lanthanum-doped molybdenum buyehliswa emva kokufakwa kwe-1200 ℃, ubude buphezulu kunocingo olusulungekileyo lwemolybdenum.
Ixesha lokuposa: Dec-19-2021