Microstructural characteristics and mechanical behaviors of AlCoCrFeNi high-entropy alloys at ambient and cryogenic temperatures

摘要：

The phase-formation rule of high-entropy alloys (HEAs) with different microstructures is discussed, based on the atom-size difference in multicomponent alloys. For the single-phase HEA with the composition of AlCoCrFeNi, the yielding strengths and fracture strengths at cryogenic temperatures increase distinguishingly, compared to the corresponding mechanical properties at ambient temperature. However, the plasticity at 298 and 77 K changes very gently, while the fracture modes are intergranular and transgranular, respectively.

关键词： High-entropy alloy Mechanical property Plastic deformation Low temperature

作者: J.W. Qiao S.G. Ma E.W. Huang C.P. Chuang P.K. Liaw Y. Zhang

作者单位: State Key Laboratory for Advanced Metals and Materials, University of Science and TechnologyBeijing, Department of Materials Science and Engineering, University of Tennessee, Knoxville TN37996-2200, US Department of Materials Science and Engineering, University of Tennessee, Knoxville TN37996-2200, US State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 419-425

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）