摘要
为了得到修复再制造后扭力轴基体和镍基合金熔接涂层的力学性能,分析了不同扭转弧度对熔接涂层和基体力学性能的影响,得出熔接涂层和基体的应力、应变随扭转弧度的变化规律,并讨论模型轴向外表面和径向内表面应力、应变随扭转弧度的变化规律。研究结果表明:修复后的模型力学性能达到原有力学性能的90%;随着扭转弧度的增大,扭力轴基体和熔接涂层的应力、应变均逐渐增大;对于模型轴向外表面,最大应力出现在涂层上,并且由涂层中心向四周的结合界面扩散,熔接涂层应变是先小于基体应变,然后再大于基体应变;对于模型径向内表面,熔接涂层的应力和应变始终大于基体的应力和应变。
In order to obtain repairing and remanufacturing mechanical properties which are the matrix of the torsion shaft and the nickel base alloy, the effect of different torsional curvature on the mechanical properties of the weld coating and the matrix was analyzed. It is concluded that the stress and strain of the fusion coating and the matrix change with the change rule of the torsion radian. The change rule of the stress and strain of the model axis outer surface and radial inner surface with the torsion radian is discussed. The results show that the model of mechanical strength after the restoration which reached 90% of the original mechanical strength and the stress and strain of the torsion shaft and the fusion coating are increased gradually with the increase of the torsion. In model for the axial outward surface, the stress of the weld coating center can reach the strength limit of the material first, the second is the outside of the coatings. The strain of the fusion coating is less than that of the matrix and then larger than that of the matrix. In model for the radial inner surface, the stress and strain of the weld coating are always greater than matrix.
出处
《工具技术》
北大核心
2016年第10期60-64,共5页
Tool Engineering
关键词
熔接涂层
基体
扭转
镍基合金
weld coating
matrix
torsion
nickel base alloy
作者简介
第一作者：周旺，硕士研究生，沈阳理工大学研究生学院，110159沈阳市通信作者：黄树涛，教授，博士研究生导师，沈阳理工大学研究生学院，110159沈阳市
