Pa Julayi 13, 2023, gulu la Prof. Gang Wang ku Institute of Materials Research of Shanghai University lofalitsa zotsatira zawo zaposachedwa za kafukufuku "Microstructural evolution and mechanical properties of (FeCoNi)85.84Al7.07Ti7.09 high-entropy alloy ndi kusankha laser kusungunuka ndi chithandizo cha ukalamba", chomwe chimagwiritsa ntchito njira yopangira zowonjezera zowonjezera komanso njira yokalamba yokhalitsa kuti ipange ((FeCoNi)85.84Al7.07Ti7.09) alloy high-entropy.FeCoNi)85.84Al7.07Ti7.09 high-entropy alloy, yomwe imawonetsa zinthu zabwino kwambiri zamakina, zokhala ndi mphamvu zolimba za 1625 MPa, zokolola za 1214 MPa, komanso elongation pakusweka kwa 11.6%.Pulofesa Jia Yandong ndi Dr. Mu Yongkun ndi olemba anzawo.
Zotsatira zazikulu
Ntchitoyi idafufuza momwe chithandizo chaukalamba chimakhudzira kusintha kwa microstructural ndi makina a (FeCoNi)85.84Al7.07Ti7.09HEA opangidwa ndiZithunzi za SLM.Zotsatira zotsatirazi zidaperekedwa.
(1) Njira ziwiri zolimbikitsira, kulimbikitsa kusuntha ndi kulimbitsa mvula, zidayambitsidwa mu FCNAT HEA pogwiritsa ntchitoZithunzi za SLMnjira ndi chithandizo chokalamba kwakanthawi kochepa pa 780 ° C.Zotsatira zake, kuphatikizika kwa kachulukidwe kakachulukidwe komanso magawo ocheperako kumatha kukwaniritsidwa mu FCNAT 780, zomwe zimapangitsa kuti pakhale makina abwino kwambiri (kutulutsa mphamvu σ0.2, kulimba komaliza σUTS, ndi elongation pa break εf mfundo za 1214 MPa, 1625 MPa , ndi 11.6%, motero).
(2) Zolemba za gawo laZithunzi za SLMzitsanzo ndi okalamba zitsanzo makamaka anapangidwa FCC gawo, L12 ndi L21 magawo.Pambuyo pa chithandizo chaukalamba, magawo a L12 ndi L21 adatsika ndipo zomwe zili mu L12 ndi L21 zimachepa pang'onopang'ono ndikuwonjezeka kwa kutentha kwa ukalamba.
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Wolemba: Yolanda/Lili Lu/Seazon