Ubwino wa waya wa molybdenum wopangidwa ndi Lanthanum

The recrystallization kutentha kwawaya wa lanthanum-doped molybdenumndi apamwamba kuposawaya woyera molybdenum, ndipo ndi chifukwa chochepa cha La2O3 chikhoza kusintha mawonekedwe ndi mawonekedwe a waya wa molybdenum.Kupatula apo, gawo lachiwiri la La2O3 litha kuwonjezera mphamvu ya kutentha kwa chipindawaya wa molybdenumndi kusintha chipinda kutentha brittleness pambuyo recrystallization.

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Recrystallization Kutentha Kuyerekeza: The microstructure wa waya woyera molybdenum mwachionekere anakulitsa pa 900 ℃ ndi recrystallized pa 1000 ℃.Ndi kutentha kwa annealing, mbewu za recrystallization zimawonjezeka, ndipo minofu ya fibrous imachepetsa kwambiri.Kutentha kwa annealing kukafika pa 1200 ℃, waya wa molybdenum wasinthidwanso, ndipo mawonekedwe ake ang'onoang'ono amawonetsa njere zofananira.Kutentha kumawonjezeka, njereyo imakula mosafanana ndipo imaoneka ngati njere zolimba.Ikalumikizidwa pa 1500 ℃, waya wa molybdenum ndi wosavuta kuthyoka, ndipo mawonekedwe ake amawonetsa njere zolimba.Mapangidwe a ulusi wa waya wa lanthanum-doped molybdenum amawonjezedwa atalumikizidwa pa 1300 ℃, ndipo mawonekedwe ngati dzino adawonekera kumalire a ulusi.Pa 1400 ℃, njere zowumbidwanso zidawonekera.Pa 1500 ℃, mawonekedwe a ulusiwo adatsika kwambiri, ndipo mawonekedwe opangidwanso adawonekera, ndipo njerezo zidakula mosagwirizana.The recrystallization kutentha kwa lanthanum-doped molybdenum waya ndi apamwamba kuposa wa koyera molybdenum waya, amene makamaka chifukwa cha zotsatira za La2O3 gawo lachiwiri particles.Gawo lachiwiri la La2O3 limalepheretsa kusamuka kwa malire a tirigu ndi kukula kwambewu, motero kumawonjezera kutentha kwa recrystallization.

Kuyerekeza Kwakatundu Wazipinda: Kutalikira kwa waya wa molybdenum kumawonjezeka ndi kutentha kwa anneal kumawonjezeka.Pamene kutentha kwa anneal pa 1200 ℃, elongation imafika pamtengo wapatali.Elongation imachepa ndi kutentha kwa anneal kumawonjezeka.Yopangidwa ndi 1500 ℃, ndipo kutalika kwake kumakhala kofanana ndi ziro.The elongation wa La-doped molybdenum waya ndi ofanana ndi koyera molybdenum waya, ndi mlingo elongation kufika pazipita pamene annealed pa 1200 ℃.Ndiyeno elongation amachepetsa ndi kutentha kuwonjezeka.Chosiyana chokha ndicho kuchepetsa kuchepetsa ndi pang'onopang'ono.Ngakhale elongation wa lanthanum-doped molybdenum waya imachedwa pambuyo annealing pa 1200 ℃, elongation ndi apamwamba kuposa koyera molybdenum waya.


Nthawi yotumiza: Dec-29-2020