Transactions of Materials and Heat Treatment

Title：Study on process of eliminating workpiece residual stress with composite aging

Authors： Mao Jianzhong Guo Lingzhi Zhou Hui Song Jianli

Unit： Hunan University China North Nuclear Fuel Co. Ltd.

KeyWords： composite aging residual stress quenching process vibration aging blind hole method

ClassificationCode：TG156.92

year,vol(issue):pagenumber：2018,43(10):151-156

Abstract：

In engineering applications, the quenching process is necessary to improve the performance of workpiece without carrying out tempering or annealing to meet certain special requirements. For the phenomenon of large deformation caused by residual stress on the surface of 45 steel after quenching，a composite aging scheme combining layerbylayer cutting and vibration aging was proposed to realize the goal of maximally eliminating the surface residual stress. Firstly，the thermal stress field and vibration aging of quenching process for 45 steel were numerically analyzed by finite element software Abaqus, and the surface residual stresses after quenching process and composite aging of optimized scheme were measured by blind hole method respectively. The results show that the residual stress of workpiece produced by the proposed scheme is lower about 70%，and the effectiveness of the proposed scheme is verified to provide a new process method for eliminating the residual stress of workpiece.

Funds：

大型先进压水堆核电站重大科技专项子课题（2013ZX06004009）

毛建中（1963-），男，博士，教授，E-mail：maojianzhong66@163.com；通讯作者：郭灵智（1992-），男，硕士研究生，E-mail：2361502684@qq.com

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