铜/钢爆炸焊接复合界面的显微组织及晶粒结构演化机理

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中文摘要：采用光滑粒子仿真、先进表征和理论分析相结合的方法,对铜/钢复合材料爆炸焊接过程中的界面瞬态行为进行深入研究,并详细阐述其显微组织演化机制.根据仿真数据重构波形完整的演化过程,并揭示各种界面特征的形成机制.多尺度EBSD分析表明,界面附近区域呈多样性的晶粒结构,其演化机制主要受塑性流动、动态再结晶和凝固形核三个过程的控制.最后,通过纳米压痕实验建立晶粒结构与力学性能之间的关系.

外文标题：Microstructure and grain evolution mechanisms of copper/steel explosive welding interface

外文摘要：By integrating smoothed particles hydrodynamics(SPH)simulation,advanced characterization,and theoretical analysis,the interfacial transient behaviors of copper/steel composite during explosive welding were deeply studied,and the evolution mechanisms of microstructures were specifically explained.According to simulated data,the entire evolution of wave was reconstructed,and the formation mechanisms of various interface features were revealed.The multi-scale EBSD analyses showed that the grain structures were diverse in the regions adjacent to the interfaces.The evolution mechanisms of these grains were mainly governed by three processes of plastic flow,dynamic recrystallization,and solidified nucleation.Finally,the correlations between the grain structures and mechanical properties were established by nanoindentation tests.

外文关键词：

explosive weldingcopper/steel compositewave-forming mechanismgrain structurenanoindentation

作者：

杨明、张冰原、马宏昊、王金相、熊家艺

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作者单位：

南京理工大学瞬态物理全国重点实验室,南京 210094

中国科学技术大学中国科学院材料力学行为和设计重点实验室,合肥 230026

中国科学技术大学火灾科学国家重点实验室,合肥 230026

关键词：

爆炸焊接铜/钢复合材料成波机理晶粒结构纳米压痕

基金：

国家自然科学基金青年基金国家自然科学基金青年基金Chinese Innovation and Entrepreneurship Training Program for College Students

项目编号：

1210242712102202202210288112X

出版年：

2024

DOI：

10.1016/S1003-6326(24)66493-9

中国有色金属学报(英文版)

中国有色金属学会

中国有色金属学报(英文版)

CSTPCD

影响因子：1.183

ISSN：1003-6326

年,卷(期)：2024.34(5)