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

层状异质结构在不同电流密度下的力学性能和断裂行为

作　　者：Li Hushan Ding Chaogang Ding Ziheng Zhang Hao Wang Fanghui Chen Yuxi Bao Jianxing Xu Jie Guo Bin Shan Debin 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(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;哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001;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;西安稀有金属材料研究院有限公司,陕西西安710016)

机构地区：[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

出　　处：《稀有金属材料与工程》2024年第10期2713-2717,共5页Rare Metal Materials and Engineering

基　　金：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)。

摘　　要：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.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。

关 键 词：Cu/Nb multilayer composite electric-assisted tension mechanical properties fracture behavior 

分 类 号：TB331[一般工业技术—材料科学与工程]