Spheroidizing annealing process of 4140 steel bar used in wind power bolts
Tao Tao, Chen Ying, Xiong Bing, Zhao Haiyang, Zhang Shiping
Heat Treatment of Metals . 2024, (12): 85 -89 .  DOI: 10.13251/j.issn.0254-6051.2024.12.014