层状异质结构在不同电流密度下的力学性能和断裂行为
Mechanical Properties and Fracture Behavior of Laminated Heterostructured Composites Under Different Current Densities
李虎山 1丁朝刚 1丁子恒 2张浩 2王方辉 2陈俞希 2包建兴 3徐杰 1郭斌 1单德彬1
作者信息
- 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;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
- 2. 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
- 3. 西安稀有金属材料研究院有限公司,陕西西安 710016
- 折叠
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.
关键词
Cu/Nb多层复合材料/电流辅助拉伸/力学性能/断裂行为Key words
Cu/Nb multilayer composite/electric-assisted tension/mechanical properties/fracture behavior引用本文复制引用
基金项目
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)
CGN-HIT Advanced Nuclear and New Energy Research Institute(CGN-HIT202305)
出版年
2024
NETL
NSTL
万方数据