首页|层状异质结构在不同电流密度下的力学性能和断裂行为

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

Cu/Nb multilayer compositeelectric-assisted tensionmechanical propertiesfracture behavior

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

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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

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Cu/Nb多层复合材料 电流辅助拉伸 力学性能 断裂行为

National Natural Science Foundation of ChinaChina Postdoctoral Science FoundationNatural Science Basic Research Program of Shaanxi ProvinceHeilongjiang Provincial Natural Science Foundation of ChinaCGN-HIT Advanced Nuclear and New Energy Research Institute

523053492023M7308372023-JC-QN-0518LH2023E033CGN-HIT202305

2024

10.12442/j.issn.1002-185X.20240485

稀有金属材料与工程
中国有色金属学会,中国材料研究学会,西北有色金属研究院

稀有金属材料与工程

CSTPCD北大核心
影响因子：0.634
ISSN：1002-185X
年,卷(期)：2024.53(10)