Characterization and analyses on micro-hardness, residual stress and microstructure in laser cladding coating of 316L stainless steel subjected to massive LSP treatment

JOURNAL OF ALLOYS AND COMPOUNDS

卷:673

Article

Luo, K. Y.¹  Jing, X.¹  Sheng, J.¹  Sun, G. F.²  Yan, Z.¹  Lu, J. Z.¹ 

[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China

[2] Southeast Univ, Sch Mech Engn, Nanjing 211189, Jiangsu, Peoples R China

关键词: Laser shock peening;    Laser cladding coating;    Micro-hardness;    Residual stress;    Microstructure;   

DOI  :  10.1016/j.jallcom.2016.02.266

来源: Elsevier

【 摘 要 】

The effects of massive laser shock peening (LSP) treatment on micro-hardness, residual stress and microstructure in four different zones of laser cladding coating was investigated. Furthermore, micro-hardness curves and residual stress distributions with and without massive LSP treatment were presented and compared, and typical microstructure in different zones of both coatings were characterized by transmission electron microscope (TEM) and cross-sectional optical microscope (OM) observations. Results and analyses showed that massive LSP treatment had an important influence on micro-hardness and residual stress of the cladding coating. Special attempt was made to the effects of massive LSP treatment on microstructure in three zones of the cladding coating. In addition, the underlying mechanism of massive LSP treatment on microstructure and mechanical properties of the cladding coating was revealed clearly. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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