|
|
|
| Effect of Carbon Content on Microstructure, Mechanical Properties of 690 Alloy Steel and Analysis of Strengthening Mechanisms |
| ZHOU Si-yuan1,2，ZHENG Wen-jie2，SONG Zhi-gang2，ZHANG Li-bo1，FENG Han2 |
1. Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2. Institute for Structural Material, Central Iron and Steel Research Institute, Beijing 100081, China |
|
|
|
|
Abstract The effect of carbon content on the microstructure and mechanical properties of 690 alloy steel was investigated. The results are as follows: in the range of 0.011%-0.033%, with the increase of carbon content, topography of precipitate on grain boundary of the desensitization 690 alloy gradually transforms into bulky scattered particles from tiny semi-continuous particles; the content of Cr-rich M23C6 which are the main precipitates increases from 0181% to 0.541%; the grain size of the desensitization 690 alloy steel decreases from 23μm to 10 μm; the tensile strength increases from 702.5MPa to 810MPa and the yield strength increases from 300MPa to 402.5MPa at room temperature. The main strengthening mechanisms of 690 alloy steel are fine grained strengthening and the second phase strengthening.
|
|
Received: 11 March 2011
Published: 05 September 2012
|
|
|
|
| [1] |
WEI Tong-yu, ZOU De-ning, ZHANG Ying-bo, CHEN Wan-wan. Effect of aluminum on microstructure and properties of high alumina ferritic heat resistant steel[J]. Iron and Steel, 2020, 55(6): 80-83. |
| [2] |
ZHAO Yun-peng, YU Chao, XIAO Hong, WU Zong-he, XU Peng-peng, XIE Hong-biao. Effect of pure iron interlayer on mechanical properties of hot rolled stainless steel clad plate[J]. Iron and Steel, 2020, 55(5): 73-79. |
| [3] |
SHAO Cheng-wei, WANG Jun-tao, ZHAO Xiao-li, HUI Wei-jun. Microstructure and mechanical properties of intercritically annealed Al-contain medium Mn steel[J]. Iron and Steel, 2020, 55(5): 87-93. |
| [4] |
CAO Jing-hua1,PAN Hong-bo2,3,ZHANG Jing1,ZHANG Teng-fei2,LI Xu-dong2,LIU Wei-ming2,3. Continuous cooling transformation of NbTi microcarbon deep drawing dualphase steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 322-328. |
| [5] |
WANG Ji-hong， ZHANG Li-na， CHEN De-li， QI Yue， CAO Li-hong. Discussion about heat treatment process of X20Cr13 blade steel for gas turbine[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(3): 18-. |
| [6] |
XING Xian-qiang, CAO Wen-quan, WANG Cun-yu. Bond structure of 55SiCr steel used for coil springs of automotive suspension system[J]. Iron and Steel, 2020, 55(3): 68-73. |
|
|
|
|
2012, Vol. 47 
