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金属焊接性能的不均匀性及其尺度效应研究 被引量:17

Unevenness of metal welding performance and its scale effect study
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摘要 金属材料的焊接,特别是采用高能束焊接中的大梯度热效应导致的焊接区域产生极大的组织和力学性能不均匀性及大梯度残余应力,形成了极其复杂的耦合作用区,从而使得针对其焊接接头组织与性能分析成为极其重要的基础科学问题。开展大梯度组织性能与大梯度残余应力对焊接接头行为影响的研究,涉及到与大梯度组织性能、焊缝及热影响区(HAZ)尺寸、大梯度残余应力复合影响。然而对于这种带有大梯度特性的焊接接头行为的研究远没有达到像对均匀材料研究那样全面和深入,尤其是在高能束焊接接头这种集大梯度组织,力学性能不均匀,大梯度残余应力,焊缝与HAZ尺寸因素于一体的服役行为将是需要深入探讨和研究的前沿课题。 The welding of metal materials,particularly the weld zone caused by using the large gradient thermal effect in highenergy beam welding, produces great unevenness of organization and mechanical property and large gradient residual stress, and forms very complex coupling zone, thus makes the analysis of weld joint organization and performance become extremely important basic science issue.Carrying out the study on large gradient organization performance and large gradient residual stress ,which impact on the behavior of weld joint,involving large gradient organization performance,weld and heat affected zone(HAZ)size,large gradient residual stress composite impact.However,the study on weld joint behavior with large gradient characteristic is far from attaining the same comprehensive and deep as the study on even material, specially the service behavior of high energy beam weld joint ,which integrates large gradient,unevenness of mechanical property,large residual gradient residual stress,weld and HAZ size factor,will be the forefront subject need to be deeply explored and studied.
作者 张建勋
出处 《电焊机》 北大核心 2009年第1期24-29,共6页 Electric Welding Machine
基金 国家自然科学基金资助项目(50875200) 教育部博士点基金资助项目(20070698088)
关键词 金属焊接性 温度梯度 高能束焊接 焊接接头组织性能 metal welding performance temperature gradient high-energy beam welding weld joint organization performance
作者简介 张建勋(1958-),男,陕西韩城人,教授,博士生导师,主要从事材料接合机理与连接技术、材料加工过程数值模拟、CAD/CAM及专家系统研究工作。 张建勋,西安交通大学教授、博士生导师;现任西安交大材料学院副院长,焊接研究所所长,西安焊接技术学会理事长,中国工程建设焊接协会常务理事,中国焊接学会常务理事等。长期从事先进材料接合与连接、精密加工与成形技术、结构服役安全性分析与评价等教学研究。致力于将材料科学、信息与计算机技术、人工智能及数字化技术引入到材料连接与接合理论与技术的研究中。获教学科研奖10余项,发明专利3项,撰写学术论文200余篇,主编和参编图书与教材5部。
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