关键词: 奥氏体, 锰钢, 合金化, 稀土, 热导率, 耐磨性能

Abstract: Aimed at the problems of the austenitic manganese steel, such as the thermal conductivity is poor, the heat is not easy to export and the workpiece is easy to heat deformation, which leads to the processing precision is difficult to guarantee, and the cutting speed cannot be improved, we study the effects of Cr, Mo and rare earth alloy elements on thermal conductivity and wear resistance of the austenitic manganese steel herein. The results showed that the thermal conductivity can be enhanced of 19.6%, the wearing rate is reduced by 54.5%, and crystal grain is improved from grade 3 to 5 comparing austenitic medium manganese steel to the traditional high manganese, when the Cr content is about 1%(?), the content of Mo is about 2%(?), and 0.15%(?) of the rare earth is added.

Key words: austenitic, manganese steel, alloying, rare earth, thermal conductivity, wear resistance