激光冲击强化作为激光选区熔化的后处理技术研究及发展展望  

Research and Development Prospects of Laser Shock Peening as a Post-Processing Technique for Selective Laser Melting

作　　者：戴鑫杰 王建磊 叶云霞[1] 黄传奇 郭嘉盛 杨未强[4,5] 曲耀斌[6] Dai Xinjie;Wang Jianlei;Ye Yunxia;Huang Chuanqi;Guo Jiasheng;Yang Weiqiang;Qu Yaobin(School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China;Intelligent Optoelectronic Detection Center,Nanjing Institute of Advanced Laser Technology,Nanjing 210038,Jiangsu,China;Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,Hunan,China;Nanhu Laser Laboratory,National University of Defense Technology,Changsha 410073,Hunan,China;Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]江苏大学机械工程学院,江苏镇江212013 [2]南京先进激光技术研究院智能光电探测中心,江苏南京210038 [3]中国科学院上海光学精密机械研究院,上海201800 [4]国防科技大学前沿交叉学科学院,湖南长沙410073 [5]国防科技大学南湖之光实验室,湖南长沙410073 [6]上海卫星工程研究所,上海201109

出　　处：《激光与光电子学进展》2024年第23期58-71,共14页Laser & Optoelectronics Progress

基　　金：国家国防科技工业局民用航天技术预先研究项目(D010105);芜湖市重大科技项目(2021zd10)。

摘　　要：激光增材制造(LAM)因具有小批量、结构复杂、周期短、成本低等优点,近些年被广泛地应用于航空、化工、医疗和生物领域。激光选区熔化(SLM)是其中极为重要的技术,该技术有着高精度控制、高致密度、可用材料广等优势,但在增材成形过程中,由于温度梯度变化及金属组织相变等因素,易产生较大的残余拉应力、大量的微小孔洞、裂纹等缺陷。为有效地解决此类问题,激光冲击强化(LSP)这一先进的材料改性技术,被广泛地应用于增材制造的后处理中。本文就近年来激光冲击强化在SLM上的研究与应用进行论述,并指出低能量激光冲击强化(LE-LSP)在SLM上的可行性及发展前景。Laser additive manufacturing(LAM)is widely used in the fields of aviation,chemistry,medicine,and biology in recent because of its advantages in terms of small batches,complex structures,short cycles,and low costs.Among them,selective laser melting(SLM)is an extremely important technology that is widely used because of its advantages of high-precision control,high density,and a wide range of available materials.However,during the additive forming process,owing to factors such as temperature gradient changes and metal phase transformation,it is easy to generate large residual tensile stress as well as a large number of small pores,cracks,and other defects.To effectively solve such problems,laser shock peening(LSP),which is an advanced material modification technology,is widely used in the postprocessing of additive manufacturing.This article discusses the research and application of LSP on SLM in recent years,highlighting the feasibility and future prospects of low-energy laser shock peening(LE-LSP)in SLM applications.

关 键 词：激光增材制造 激光选区熔化 激光冲击强化 机械性能 微观组织形貌 低能量 

分 类 号：TN249[电子电信—物理电子学]