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
戴鑫杰 1王建磊 2叶云霞 3黄传奇 4郭嘉盛 4杨未强 5曲耀斌6
作者信息
- 1. 江苏大学机械工程学院,江苏 镇江 212013;南京先进激光技术研究院智能光电探测中心,江苏 南京 210038
- 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;中国科学院上海光学精密机械研究院,上海 201800
- 3. 江苏大学机械工程学院,江苏 镇江 212013
- 4. 南京先进激光技术研究院智能光电探测中心,江苏 南京 210038
- 5. 国防科技大学前沿交叉学科学院,湖南 长沙 410073;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
- 折叠
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.
Abstract
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 post-processing 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Key words
laser additive manufacturing/selective laser melting/laser shock peening/mechanical properties/microstructure morpholog/low energy引用本文复制引用
出版年
2024
NETL
NSTL
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