Effect of reprocessing on residual stress of N18 zirconium alloy plate

doi:10.13251/j.issn.0254-6051.2020.12.020

Abstract

Abstract: N18 zirconium alloy plates were reprocessed through “hot rolling+cold rolling+annealing”. The surface residual stress was acquired by X-ray diffraction method. The disorientation angle distribution and the grain boundaries were analysed by means of EBSD. The results show that after hot rolling, the distribution of surface residual stress on the N18 zirconium alloy plate is no rule. After cold rolling, the surface residual stress increases with rise of cold rolling deformation quantity and entirely presents compression stress. After annealing, the surface residual stress level is low and reaches the lowest when annealing at 500 ℃ for 2 h. After annealing, the microstructure mainly consists of low angle grain boundaries, and the density of which shifts from increasing to stabilization with rise of annealing temperature.

Key words: N18 zirconium alloy plate, residual stress, reprocessing

CLC Number:

TG166.7

Yang Pan, Zhang Hongzhi, Zhang Yiyong, Qiang Rui, Jiang Qiang, Zhao Yong, Xiao Ya. Effect of reprocessing on residual stress of N18 zirconium alloy plate[J]. Heat Treatment of Metals, 2020, 45(12): 106-110.

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