Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 673, Issue -, Pages 158-169Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.02.266
Keywords
Laser shock peening; Laser cladding coating; Micro-hardness; Residual stress; Microstructure
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Funding
- National Natural Science Foundation of China [51575242]
- Jiangsu Provincial Natural Science Foundation [BK20140012]
- Major programs of Natural Science Foundation of the Jiangsu Higher Education Institutions [14KJA460002]
- National Science Foundation for Post-doctoral Scientists of China [2014M551510/2015T80504]
- Six Major Talent Peak of Jiangsu Province [2014-ZBZZ-015]
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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.
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