摘要

研究了激光冲击强化(LSP)对316L不锈钢熔覆层表面显微硬度、残余应力以及微观结构的影响。结果表明, LSP后熔覆层表面的显微硬度和残余应力得到明显改善; 微观结构发生明显变化, 晶粒由柱状晶转变为等轴晶, 晶粒得到细化; 熔覆层自腐蚀电流密度降低, 材料耐腐蚀性得到提高。

Abstract

The influence of laser shock peening (LSP) treatment on the microhardness, residual stress and microstructure of the cladding layer surface of 316L stainless steel is studied. The results show that, the microhardness and residual stress of the cladding layer after LSP are improved obviously; the change of microstructure occurs obviously, and the grains are refined where columnar structures transform to equiaxial structures; the current density of self-corrosion of the cladding layer is reduced, and the corrosion resistance of the material is improved.

补充资料

中图分类号：TN249

DOI：10.3788/cjl201744.0402005

所属栏目：激光制造

基金项目：国家自然科学基金(51575242)、江苏省科技技划项目(BK20140012, BK20151341, BE2016148)、江苏省“六大人才高峰”高层次人才项目(2014ZBZZ015)、江苏省高校自然科学研究重大项目(14KJA460002)、江苏省博士后科研资助项目(1501140B)

收稿日期：2016-09-12

修改稿日期：2016-11-20

网络出版日期：--

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联系人作者：罗开玉(kyluo@ujs.edu.cn)

备注：罗开玉(1975-),女,博士, 教授, 博士生导师, 主要从事激光冲击波非传统制造技术方面的研究。

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引用该论文

Luo Kaiyu,Zhou Yang,Lu Jinzhong,Liu Bo. Influence of Laser Shock Peening on Microstructure and Property of Cladding Layer of 316L Stainless Steel[J]. Chinese Journal of Lasers, 2017, 44(4): 0402005

罗开玉,周阳,鲁金忠,刘波. 激光冲击强化对316L不锈钢熔覆层微观结构和性能的影响[J]. 中国激光, 2017, 44(4): 0402005