A Method for Evaluating Intensity of Water Cavitation Peening Processing
Water cavitation peening (WCP) with aeration, namely, a new ventilation nozzle with aeration is adopted to improve the process capability of WCP by increasing the impact pressure induced by the bubble collapse on the surface of components. In this study, in order to investigate the process capability of the WCP with aeration a standard N-type almen strips of spring steel SAE 1070 was treated by WCP with various process conditions, and the arc height value and the residual stress in the superficial layers were measured by means of the Almen-scale and X-ray diffraction method, respectively. The optimal fluxes of aeration and the optimal standoff distances were achieved. The maximum of arc height value reach around 150μm. The depth of plastic layer observed from the results of residual stresses is up to 150μm. The results verify the existence of macro-plastic strain in WCP processing. The distributions of residual stress in near-surface under different peening intensity can provide a reference for engineers to decide the optimal process conditions of WCP processing.
water cavitation peening arc height value X-ray diffraction residual stress
B.Han D.Y.Ju Y.Sun X.G.Yu
School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,Anshan Department of Material Science and Engineering,Saitama Institute of Technology,Fusaiji 1690,Fukaya,S
国际会议
The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会)
北京
英文
411-414
2009-10-27（万方平台首次上网日期，不代表论文的发表时间）