Investigation on Mechanism of Strength-Toughening of Heat and Corrosion Resistant Bearing Steel 16Cr14Co12Mo5
WANG Kang1,2,YANG Mao-sheng2,FAN Gang1,YU Feng2,BAO jian1,2,YAN Wen-kai1,2
1. Faculty of Materials Science and Engineering, Kunming University of science and Technology, Kunming 650093,Yunnan, China 2. Central Iron and Steel Research Institute, Beijing 100081, China
Abstract:After quenching at 1050℃, microstructures and Mechanical Properties and mechanism of strength-toughening of heat and corrosion resistant bearing steel 16Cr14Co12Mo5 was investigated after 490-540℃ double tempering. The results show that the tensile strength Rm gradually increases and its Maximum is above 1900MPa;the yielding strength Rp0.2 is above 1400MPa after tempering at 500℃ and then decrease gradually; both A and Z decrease slightly, but HRC increase fairly small. The strength-toughening of material mainly comes of high density dislocation martensitic laths, residual anstenitic between martensitic, precipitation of carbides and intermetallic compounds. The precipitation of carbides and intermetallic compounds, which was the key to achieve the best match between strength and toughness of samples, was obtained through appropriately quenching and tempering technology.
王康,,杨卯生,樊刚,俞峰,鲍俭,,闫文凯,. 16Cr14Co12Mo5耐热耐蚀轴承钢强韧化机制的研究[J]. 钢铁, 2011, 46(10): 75-79.
WANG Kang1,2,YANG Mao-sheng2,FAN Gang1,YU Feng2,BAO jian1,2,YAN Wen-kai1,2. Investigation on Mechanism of Strength-Toughening of Heat and Corrosion Resistant Bearing Steel 16Cr14Co12Mo5. Iron and Steel, 2011, 46(10): 75-79.