摘要
随着激光增材制造基础理论研究和设备水平的提升,激光增材制造技术越来越多地应用于大型复杂结构的生产制造。激光增材成形过程中形成的应力会导致成形件变形、开裂,因此应力变形的控制是激光增材制造过程亟待解决的关键问题。本文总结了激光增材制造残余应力形成机制、应力变形测试技术和应力变形调控措施等方面的研究现状,提出了激光增材制造应力变形调控存在的主要问题及以后的研究方向,为高性能金属构件激光增材制造"控形"研究提供指导。
With the development of basic theoretical research and equipment,laser additive manufacturing technology is widely used in the manufacture of large complex components.However,the internal stress in laser additive manufacturing process tends to result in distortion and cracking.Stress and deformation control has become an urgent issue in laser additive manufacturing process.In this paper,research progress of residual stress in laser additive manufacturing was reviewed from various aspects such as residual stress forming mechanism,test methods,control measures.Furthermore,the main problems and research directions were proposed for the research of stress and deformation control technology,which provides guidance for the research of"shape control"in laser additive manufacturing.
作者
陈勇
陈辉
姜亦帅
汪倩
吴影
熊俊
董世运
CHEN Yong;CHEN Hui;JIANG Yi-shuai;WANG Qian;WU Ying;XIONG Jun;DONG Shi-yun(Key Laboratory of Advanced Technologies of Materials(Ministry of Education),School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China;National Key Laboratory for Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2019年第11期1-10,共10页
Journal of Materials Engineering
基金
国家重点研发计划重点专项(2016YFB11000202)
国家自然科学基金面上项目(51474178)
关键词
高性能金属材料
激光增材制造
应力变形检测
应力变形调控
high-performance metal material
laser additive manufacturing
stress and deformation measurement
stress and deformation control
作者简介
通讯作者:陈辉(1970-)男,教授,博士,主要从事激光增材制造、激光焊接及激光表面工程技术研究,联系地址:成都市二环路北一段111号西南交通大学材料科学与工程学院(610031),E-mail:xnrpt@swjtu.edu.cn.
