Experimental Study on Residual Stress Reduction for the High-strength Steel Based on Vibration Stress Relief

doi:10.3901/JME.2017.01.086

Abstract

Abstract: Based on the principle of vibration stress relief (VSR), the effectiveness of the residual stress of high-strength steel plate is studied. The high frequency vibration table is selected as excitation device, and a steel in-plane tension loading device is designed and set up. Before and after the VSR process, X-ray diffraction method is utilized to measure the surface residual stress of Martensitic high strength steel plate and the control group-T2 tin plating board, and the possible deformations of strip buckling and warping of the steel plates are measured. Research results demonstrate that the high frequency vibration table and the loading tension strip steel can be implemented in the same vibration frequency. After being vibrated in a particular vibration frequency and a period of time, the residual stress of the two material steel is reduced and homogenized, but the strip buckling defects and warping defects of the steel plates has not changed and the residual stress reduction of high-strength steel is comparatively weaker than the control group. The experimental results can reflect that the strength of materials has significantly influence on vibration stress relief effect and vibration stress relief has limit influence on the strip buckling defects and warping defects of the steel plates.

Key words: dynamic stress, high-strength steel, residual stress, vibratory stress relief

ZHANG Qingdong, ZENG Jiewei, LUO Xiaoming, ZHANG Xiaofeng, CHEN Bing. Experimental Study on Residual Stress Reduction for the High-strength Steel Based on Vibration Stress Relief[J]. Journal of Mechanical Engineering, 2017, 53(1): 86-92.

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