Effects of Reaction Layers on the Residual Stress of the Brazed TiC Cermets/steel joints

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (02): 203-207.

Effects of Reaction Layers on the Residual Stress of the Brazed TiC Cermets/steel joints

张丽霞¹;冯吉才²

1. 哈尔滨工业大学材料学院焊接系
2. 哈尔滨工业大学

收稿日期:2007-10-09 修回日期:2008-03-11 出版日期:2009-03-28 发布日期:2009-10-10
通讯作者: 张丽霞
基金资助:
国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金

Effect of Reaction Layers on the Residual Stress of the Brazed TiC Cermets/Steel Joints

Lixia Zhang^† and Jicai Feng

National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China

Received:2007-10-09 Revised:2008-03-11 Online:2009-03-28 Published:2009-10-10
Supported by:
the National Natural Science Foundation of China under grant No. 50705022
the Program of Excellent Team in Harbin Institute of Technology, China

摘要/Abstract

摘要：

首次考虑界面反应层的影响，采用有限元方法对TiC金属陶瓷/钢钎焊接头的残余应力进行研究。计算结果表明：当在1123K保温300s的工艺参数下（即低工艺参数）钎焊TiC金属陶瓷与钢时，焊后接头的最大残余剪应力出现在靠近TiC金属陶瓷侧的(Cu, Ni)层处。当温度降为300K时，其值为92.16 MPa。当在1273K保温900s的工艺参数下（即高工艺参数）钎焊TiC金属陶瓷与钢时，焊后接头的最大残余剪应力出现在(Cu, Ni)+(Fe, Ni)层处。当温度降为300K时，其值为39.18 MPa。由上述数值模拟计算结果得到的接头断裂位置与实验结果一致。

Abstract:

For the first time, considering the effect of reaction layers, numerical simulation calculation of residual stress on brazed TiC cermets/steel joint was studied by finite element method (FEM). The calculation results show that, when the joint is brazed at 1123 K for 300 s (low brazing parameters), the maximum shear stress value occurs on (Cu, Ni) layer near TiC cermets, which is 92.16 MPa as the temperature is 300 K. When the joint is brazed at 1273 K for 900 s (high brazing parameters), the maximum shear stress value occurs on (Cu, Ni)+(Fe, Ni) layer, which is 39.18 MPa as the temperature is 300 K. The fracture sites of the joints obtained from numerical simulation calculation accord with experimental results.

Key words: Numerical simulation, Residual stress, Reaction layer, Brazing

张丽霞冯吉才. Effects of Reaction Layers on the Residual Stress of the Brazed TiC Cermets/steel joints[J]. J. Mater. Sci. Technol., 2009, 25(02): 203-207.

Lixia Zhang,Jicai Feng. Effect of Reaction Layers on the Residual Stress of the Brazed TiC Cermets/Steel Joints[J]. J Mater Sci Technol, 2009, 25(02): 203-207.

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