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层状异质结构在不同电流密度下的力学性能和断裂行为
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1.哈尔滨工业大学 金属精密热加工国家级重点实验室,黑龙江 哈尔滨 150001;2.哈尔滨工业大学 材料科学与工程学院,黑龙江 哈尔滨 150001;3.哈尔滨工业大学 微系统与微结构制造教育部重点实验室,黑龙江 哈尔滨 150001;4.西安稀有金属材料研究院有限公司,陕西 西安 710016

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基金项目:

国家自然科学基金项目(Grant No. 52305349),中国博士后科学基金(No. 2023M730837),陕西省自然科学基础研究项目(2023-JC-QN-0518); 黑龙江省自然科学基金No. LH2023E033


Mechanical Properties and Fracture Behavior of Laminated Heterostructured Composites Under Different Current Densities
Author:
Affiliation:

1.National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China;2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;3.Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150001;4.Xi'an Rare Metal Materials Institute Co., Ltd, Xi'an 710016, China

Fund Project:

National Natural Science Foundation of China (52305349); China Postdoctoral Science Foundation (2023M730837); Natural Science Basic Research Program of Shaanxi Province (2023-JC-QN-0518); Heilongjiang Provincial Natural Science Foundation of China (LH2023E033); Supported by CGN-HIT Advanced Nuclear and New Energy Research Institute (CGN-HIT202305)

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    摘要:

    研究了Cu/Nb多层复合材料在电流辅助拉伸作用下的力学性能和断裂形貌。结果表明,随着电流密度的增加,产生的焦耳热导致应力显著软化。然而,材料的延伸率有所降低。这与Cu/Nb多层复合材料在电流辅助拉伸过程中的特征断裂行为密切相关。随着电流密度的增加,断裂模式逐渐由韧性断裂转变为熔断。

    Abstract:

    The mechanical properties and fracture morphologies of Cu/Nb multilayer composites under electric-assisted tension (EAT) were investigated. Results show that the generated Joule-heat leads to obvious stress softening with the increase in current density. However, the elongation decreases, which is closely related to the characteristic fracture behavior of Cu/Nb multilayer composites during EAT. The fracture pattern is gradually transformed from ductile fracture to melt fracture with the increase in current density.

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李虎山,丁朝刚,丁子恒,张浩,王方辉,陈俞希,包建兴,徐杰,郭斌,单德彬.层状异质结构在不同电流密度下的力学性能和断裂行为[J].稀有金属材料与工程,2024,53(10):2713~2717.[Li Hushan, Ding Chaogang, Ding Ziheng, Zhang Hao, Wang Fanghui, Chen Yuxi, Bao Jianxing, Xu Jie, Guo Bin, Shan Debin. Mechanical Properties and Fracture Behavior of Laminated Heterostructured Composites Under Different Current Densities[J]. Rare Metal Materials and Engineering,2024,53(10):2713~2717.]
DOI:10.12442/j. issn.1002-185X.20240485

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  • 收稿日期:2024-08-04
  • 最后修改日期:2024-09-02
  • 录用日期:2024-09-04
  • 在线发布日期: 2024-09-27
  • 出版日期: 2024-09-27