回火温度对<strong>1000 MPa</strong>级<strong>NiCrMoV</strong>低碳合金钢微观组织和低温韧性的影响

回火温度对1000 MPa级NiCrMoV低碳合金钢微观组织和低温韧性的影响

周成, 赵坦, 叶其斌, 田勇, 王昭东, 高秀华

Effects of Tempering Temperature on Microstructure and Low-Temperature Toughness of 1000 MPa Grade NiCrMoV Low Carbon Alloyed Steel

ZHOU Cheng, ZHAO Tan, YE Qibin, TIAN Yong, WANG Zhaodong, GAO Xiuhua

图8 不同温度回火的NiCrMoV低碳合金钢冲击断口形貌的SEM像

Fig.8 SEM images of impact fracture morphologies of the NiCrMoV low carbon alloyed steel impact specimens tempered at 450^oC (a), 500^oC (b), 550^oC (c), 600^oC (d), and 650^oC (e)