Author/Authors :
Yoon, Jae Hong School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Li, Kejian School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Wu, Xu School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Chen, Liping School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Chen, Dengming School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Zhu, Gungjun School of Metallurgy and Materials Engineering - Chongqing University of Science & Technology - Chongqing 401331, China , Shen, Qian College of Material Science and Engineering - Chongqing University of Technology - Chongqing 400054, China
Abstract :
34CrMo4 steel is widely used for drill stem in oil exploration, because of its excellent properties, such as favorable hardenability,shock absorption, less tendency of temper brittleness, and eminent wear resistance. In this study, the main works are residualstress test and microstructure characterization of 34CrMo4 steel upon various shot peening treatments. The residual stressdistribution with effect depth was studied upon the shot peening. Face-to-face paste sample preparation method is required forcontinuous observation for microstructure evolution of shot-peened specimen from the treat surface to matrix. Grainrefinement, lath structure, and precipitates are clearly observed in the gradient deformation layer
Keywords :
Residual Stress , Microstructure Characterization , 34CrMo4 Steel Modified , Shot Peening
