Microstructure and Mechanical Property of Ni Metal Treated by Surface Mechanical Attrition
来源期刊：材料热处理学报2004年第5期
论文作者：WEN Chun-sheng T.Y.Hsu RONG Yong-hua
关键词：nanostructured surface layer; microstructure; mechanical property; surface mechanical attrition;
摘 要：A nanostructured surface layer can be formed in Ni metal treated by surface mechanical attrition (SMA). The microstructure was investigated by using optical microscope, X-ray diffractometer and transmission electron microscope,respectively. Mechanical property measurements indicate that the yield strength of the surface layer raises significantly while the tensile strength somewhat changes and the elongation percentage reduces severely compared with that of the inside layer. Meanwhile, yield-drop-like phenomenon occurs in the surface layer after SMA treatment. In order to compare the mechanical behavior of nanostructured materials with two phases, Fe-30Ni nanostructured alloy was also investigated.
WEN Chun-sheng1，T.Y.Hsu1，RONG Yong-hua1
(1.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, China)
摘要:A nanostructured surface layer can be formed in Ni metal treated by surface mechanical attrition (SMA). The microstructure was investigated by using optical microscope, X-ray diffractometer and transmission electron microscope,respectively. Mechanical property measurements indicate that the yield strength of the surface layer raises significantly while the tensile strength somewhat changes and the elongation percentage reduces severely compared with that of the inside layer. Meanwhile, yield-drop-like phenomenon occurs in the surface layer after SMA treatment. In order to compare the mechanical behavior of nanostructured materials with two phases, Fe-30Ni nanostructured alloy was also investigated.
关键词:nanostructured surface layer; microstructure; mechanical property; surface mechanical attrition;
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