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
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- 性别：男
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- 学位：博士
- 学科：材料科学与工程
- 学科：材料科学与工程
已毕业博士生陈良斌关于 碳合金化Fe40Mn40Co10Cr10高熵合金的动态拉伸变形行为的论文在 Intermetallics 上发表。
- 发布时间：2025-08-28
- 文章标题：已毕业博士生陈良斌关于 碳合金化Fe40Mn40Co10Cr10高熵合金的动态拉伸变形行为的论文在 Intermetallics 上发表。
- 内容：Dynamic tensile behavior and deformation mechanism of carbon interstitial Fe 40 Mn 40 Co 10 Cr 10high entropy alloyLiangbin Chen a , Xin Li b , Ke Tang c ,Yuhang Shi c , Yaohui Li a , Yaoju Li a , Ran Wei d , Yanpu Chao a, ⁎ ,Feng Jiang c, ⁎a School of Mechatronics Engineering, Xuchang University, Xuchang, 461000, Chinab School of Mechanical and Power Engineering, Dalian Ocean University, Dalian, 116000, Chinac State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an,710049, Chinad School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China* Corresponding author.E-mail address: chaoyanpu@163.com (Y. P. Chao); jiangfeng@mail.xjtu.edu.cn (F. Jiang)许昌学院陈良斌为第一作者，许昌学院Cao Yanpu教授和江峰教授为共同通讯作者，大连海运学院 Li Xin， 许昌学院 Li Yaohui Li Yaoju、 课题组博士生唐可、史雨航、郑州大学魏然副教授等为共同作者。AbstractCarbon interstitial solid solution strengthening is an effective strategy to simultaneously enhancethe strength and ductility of face-centered cubic high entropy alloys (HEAs). However, majority ofstudies have confined to quasi-static condition. In this study, the dynamic and quasi-static tensilemechanical behaviors of Fe 40 Mn 40 Co 10 Cr 10 and (Fe 40 Mn 40 Co 10 Cr 10 ) 96.7 C 3.3 HEAs were investigated atroom temperature. The results show that high strain rate can significantly improve the strength of bothFe 40 Mn 40 Co 10 Cr 10 and (Fe 40 Mn 40 Co 10 Cr 10 ) 96.7 C 3.3 HEAs. The yield strength of Fe 40 Mn 40 Co 10 Cr 10 and(Fe 40 Mn 40 Co 10 Cr 10 ) 96.7 C 3.3 increases from 245 MPa and 437 MPa at strain rate of 1×10 -3 s -1 to 530 MPaand 815 MPa at strain rate of 8×10 3 s -1 . Moreover, the ultimate tensile strength of Fe 40 Mn 40 Co 10 Cr 10 and(Fe 40 Mn 40 Co 10 Cr 10 ) 96.7 C 3.3 reaches to 1073 MPa and 1413 MPa at strain rate of 8×10 3 s -1 , respectively.Whereas, the ductility of both HEAs declines remarkedly, with uniform elongation decreasing from 46.2%1 and 67.4% at strain rate of 1×10 -3 s -1 to 7.9% and 25.2% at strain rate of 8×10 3 s -1 . The thermally activateddislocation motion and the phonon drag effects jointly contribute to the striking increment of yieldstrength with increasing strain rate. The temperature rise during dynamic deformation gives rise tostacking fault energy increasing, which inhibits the deformation twinning, resulting in the reduction ofstrain hardening rate and thus the reduced ductility. In particular, with the assistance of C solid solution,(Fe 40 Mn 40 Co 10 Cr 10 ) 96.7 C 3.3 exhibits enhanced twinning formation capability and superior resistance toshear bands formation than Fe 40 Mn 40 Co 10 Cr 10 , which enables a better combination of strength andductility upon dynamic loads. These findings provide deep insights into dynamic deformation behaviorof carbon interstitial face-centered cubic HEAs.Keywords:High entropy alloy (HEA); Dynamic deformation; Carbon solid solution; Strain rate strengthening感谢国家自然科学基金委和其它单位的资助。AcknowledgementsThis work was supported by the National Natural Science Foundation of China (NSFC) (Grant Nos.92166102 and 52471141). L.B. Chen is grateful for the Henan Provincial Science and TechnologyResearch Project (No. 232102230045), the Key Scientific Research Project of Colleges and Universitiesin Henan Province (No. 23B430014) and Science and Technology Innovation Teams in Universities ofHenan Province (25IRTSTHN023). Y. P. Chao is grateful for the Henan Provincial Science andTechnology Research Project (No. 242102231054).