作　　者： ; ; ;

机构地区： 北京科技大学材料科学与工程学院

出　　处： 《北京科技大学学报》 2007年第12期1228-1233,共6页

摘　　要： 采用有限元方法模拟了TC4/V/Cu/Ni/GCr15焊后多层材料淬火过程中的温度及应力场,模拟中考虑了轴承钢中马氏体相变的影响.模拟结果表明:淬火过程中,中间层是应力最为集中的区域,钢中发生的马氏体相变起到了降低应力的作用;中间Cu层是剪切应力最为集中的区域;最大剪切应力出现在马氏体相变前铜层外表面处,是引起工件失效的主要原因;轴承钢层厚度的减小可以明显降低工件中最大剪切应力,但不能从根本上消除引起工件失效的危险因素. The finite element technique was used to simulate the temperature field and stress held of multilayer diffusion bonding materials TCA/V/Cu/Ni/GCr15 occurring during oil quenching. The effect of martensitic transformation was considered during the simulation. It is shown that stress concentration appears on the adjacent place of interlayer; martensitic transformation in steel layer can alleviate the stress generated in the heat treatment process; the maximal shear stress appears at the edge of Cu layer before the quenching temperature reaching Ms, The reduction in thickness of bearing steel layer can decrease the maximal shear stress in the workpiece, but it cannot eliminate the fundamental source of failure of the workpiece

关 键 词： 多层材料 扩散焊接 淬火应力 有限元分析 马氏体相变

领　　域： [金属学及工艺] [金属学及工艺]