贝氏体钢轨的低温疲劳裂纹扩展行为
刘蓉, 高古辉, 桂晓露, 白秉哲

Low-Temperature Fatigue Crack Propagation Behavior of Bainitic Rail Steel
LIU Rong, GAO Guhui, GUI Xiaolu, BAI Bingzhe
图6 贝氏体钢轨在室温和-40 ℃下冲击断口形貌的SEM像
Fig.6 Low (a, c) and locally high (b, d) magnified SEM images showing the impact fracture morphologies of bainitic rail steel tested at RT (a, b) and -40 oC (c, d)