摘要
Fe-Al-Ta eutectic composites with solidification rates of 6,20,30,80 and 200μm/s were obtained by a modified Bridgman directional solidification technique and alloying.Moreover,tensile property and fracture behavior of Fe-Al-Ta eutectic composites were studied at 600℃.The relationship between mechanical property and microstructure at high temperature was studied.Microstructure of Fe-Al-Ta eutectic is composed of Fe_(2)Ta(Al)Laves phase and Fe(Al,Ta)matrix phase.In addition,the tensile strength at high temperatures is higher than that at room temperature.The tensile strength is increased with the increase of solidification rate.Moreover,fracture morphology transforms from cleavage fracture to dimple fracture as the solidification rate is increased at high temperatures.
作者
崔春娟
DENG Li
LIU Wei
WANG Yan
LIU Yue
LAI Yuanyuan
SU Haijun
LIU Yingying
CUI Chunjuan;DENG Li;LIU Wei;WANG Yan;LIU Yue;LAI Yuanyuan;SU Haijun;LIU Yingying(School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi’an 710072,China;Shaanxi Metallurgical Engineering Technology Research Center,Xi’an 710055,China)
基金
Funded by National Natural Science Foundation of China(No.51201121)
Key Industry Innovation Chain(group)Project of Shaanxi Province(No.2019ZDLGY 04-04)
International Cooperation Project of Key R&D Program in Shaanxi Province(No.2020KW-033)
Industrialization Project of Shaanxi Provincial Department of Education(No.20JC024)
