Effect of Al on hardenability of 42CrMo bolt steel
Lü Chaoran, Shi Chao, Jiang Weibin, Liu Jinde, Xu Le, Wang Maoqiu
Heat Treatment of Metals . 2020, (10): 164 -170 .  DOI: 10.13251/j.issn.0254-6051.2020.10.032