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Materials 2017, 10(3), 292; doi:10.3390/ma10030292

Effects of Laser Shock Processing on Morphologies and Mechanical Properties of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion

1
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
2
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
3
School of Electro-mechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China
*
Author to whom correspondence should be addressed.
Academic Editor: Peter J. Uggowitzer
Received: 6 February 2017 / Revised: 5 March 2017 / Accepted: 10 March 2017 / Published: 15 March 2017
View Full-Text   |   Download PDF [6229 KB, uploaded 15 March 2017]   |  

Abstract

Effects of laser shock processing (LSP) on the cavitation erosion resistance of laser weldments were investigated by optical microscope (OM), scanning electron microscope (SEM) observations, roughness tester, micro hardness tester, and X-ray diffraction (XRD) technology. The morphological microstructures were characterized. Cumulative mass loss, incubation period, erosion rate, and damaged surface areas were monitored during cavitation erosion. Surface roughness, micro-hardness, and residual stress were measured in different zones. Results showed that LSP could improve the damage of morphological microstructures and mechanical properties after cavitation erosion. The compressive residual stresses were generated during the process of LSP, which was an effective guarantee for the improvement of the above mentioned properties. View Full-Text
Keywords: laser shock processing; cavitation erosion; laser weldment laser shock processing; cavitation erosion; laser weldment
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MDPI and ACS Style

Zhang, L.; Lu, J.-Z.; Zhang, Y.-K.; Ma, H.-L.; Luo, K.-Y.; Dai, F.-Z. Effects of Laser Shock Processing on Morphologies and Mechanical Properties of ANSI 304 Stainless Steel Weldments Subjected to Cavitation Erosion. Materials 2017, 10, 292.

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