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Numerical Calculation and Experimental Research on Residual Stresses in Precipitation-hardening Layer of NAK80 Steel for Shot Peening |
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| Authors: | MIAO Hong ZUO Dunwen WANG Min ZHANG Ruihong WANG Hongfeng Jiangsu Key Laboratory of Precision Micro-Manufacturing Technology Nanjing University of Aeronautics Astronautics Nanjing China College of Mechanical Engineering Yangzhou University Yangzhou China |
| Affiliation: | MIAO Hong 1,2,ZUO Dunwen 1,WANG Min 1,ZHANG Ruihong 2,and WANG Hongfeng 1 1 Jiangsu Key Laboratory of Precision and Micro-Manufacturing Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China 2 College of Mechanical Engineering,Yangzhou University,Yangzhou 225000,China |
| Abstract: | Shot peening can improve fatigue strength of materials by creating compressive residual stress field in their surface layers,and offers a protection against crack initiation and propagation,corrosion,etc.And fatigue fracture and stress corrosion cracking of NAK80 steel parts are improved effectively.Currently there lacks in-depth research in which the beneficial effect of the residual stress may be offset by the surface damage associated with shot peening,especially in terms of the research on the effective... |
| Keywords: | shot peening residual stress precipitation-hardening layer surface quality |
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