Diffusion Phenomenon during Surface Mechanical Attrition Treatment and its Effect on Magnetic Property in Nanocrystalline Fe-30wt.％Ni Alloy

摘要：

A nanocrystalline surface layer is produced in Fe-30wt.％ Ni alloy by surface mechanical attrition treatment (SMAT) and strain-induced nanocrystalline martensite is obtained in the surface layer. The characterization of microstructure and composition indicates that alloying elements of Fe, Cr diffuse from steel balls into the surface layer during SMAT. The diffusion phenomenon leads to the composition deviation in surface layer from its original one, which results in the different magnetic property of Fe-30wt.％Ni alloy, such as saturation magnetization (Ms) and Curie temperature (Tc).

关键词： surface mechanical attrition treatment nanocrystalline materials Fe-Ni alloy diffusion magnetic property

作者: LI Wei LIU Ping MA Feng-cang CHEN Xiao-hong RONG Yong-hua

作者单位: School of Materials Science and Engineering,University of Shanghai for Science and Technology,Shangh School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 111-114

在线出版日期: 2009-10-27（万方平台首次上网日期，不代表论文的发表时间）