Fracture failure analysis of grade 12.9 bolt?for fuel gas pressure regulating valve
Zhao Jinlan1,2, Liu Yinglai1,2, Wang Chang’an1,2, Nie Xianghui1,2, Xu Yan1,2, Yang Fenglan1,2
Heat Treatment of Metals . 2016, (12): 192 -195 .  DOI: 10.13251/j.issn.0254-6051.2016.12.040