江峰
- 教授
- 博士生导师
- 硕士生导师
- 电子邮箱：
- 所在单位：材料科学与工程学院
- 学历：博士研究生毕业
- 办公地点：
- 性别：男
- 联系方式：
- 学位：博士
- 学科：材料科学与工程
- 学科：材料科学与工程
祝贺博士生 史雨航关于低成本高熵合金冲击性能的论文在 Intermetallics 杂志 正式发表！
- 发布时间：2024-12-30
- 文章标题：祝贺博士生 史雨航关于低成本高熵合金冲击性能的论文在 Intermetallics 杂志 正式发表！
- 内容：
Charpy impact behavior and fracture mechanisms in cost-effective ferrous medium-entropy alloy at ambient and cryogenic temperatures
Yuhang Shi a, Liangbin Chen b,*, Tinghui Cao a, Ran Wei c , Zhongyue Yang a, Yaohui Li b, Chong Yang b, Xuxiang Wan b, Yake Wu a, Feng Jiang a,**
a State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, 710049, China
b School of Mechatronics Engineering, Xuchang University, Xuchang, 461000, Chinac School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, ChinaABSTRACTThe cost-effective ferrous medium-entropy alloys (MEAs) exhibit excellent quasi-static tensile property especiallyat cryogenic temperature, whereas their impact property under high loading rate is still unclear. In this work, thetensile and Charpy impact behaviors of Fe 62 Co 5 Ni 10 Cr 13 Si 7 Al 3 (at. %) ferrous MEA have been thoroughlyinvestigated at 298 K and 77 K, respectively. The tensile mechanical response shows that as the temperaturedecrease from 298 K to 77 K, the prepared ferrous MEA comprising 86 vol% face-centered cubic (FCC) phase and14 vol% body-centered cubic (BCC) phase shows significantly improved yield strength from 986 MPa to 1252MPa and tensile strength from 1186 MPa to 2016 MPa, along with a comparable ductility. While outstandingcombination of impact toughness and yield strength outperforms most other metallic materials, it is undeniablethat the impact absorbed energy sharply decrease from 95.5 J at 298 K to 32.2 J at 77 K. The substantial reducedplastic zone ahead of crack tip coupled with the transition of micro-fracture mechanism from ductile dimples to amixture of dimples and cleavages, which is not conducive to energy consumption during crack propagation, isresponsible for the reduced impact toughness.共同作者由许昌学院的陈良斌博士、郑州大学的魏然副教授以及多位研究生感谢国家自然科学基金的资助。