|
|
|
| Effect of Carbide on Microstructure and Mechanical Property of Induction Hardening Layer for Parts of Unquenched Steel |
| ZHANG Ying-jian1,LU yun2,CHEN Si-lian1,HUI Wei-jun1,DONG Han1 |
1. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China
2. Research and Development Center, China Faw Group Corporation, Changchun 130011, Jilin, China |
|
|
|
|
Abstract Mechanical properties of Semi-axle of non-quenching and tempering steel (FAS2340) was improved and was 50% higher than quenched and tempered steel (42CrMoH) in torsion fatigue test. In order to clear the reason, two Semi-axles of FAS2340 and 42CrMoH were investigated. Microstructure shows that a large number of reticular small particles are formed in FAS2340 during induction hardening. According to results of TEM and Phase analysis, the small particle is constituted mainly by no-melting cementite particles, and the Fe3C particles (diameter: 5-9nm) are more than 70%. The austenite grain size of hardened layer is refined accordingly. Then, fine and uniform martensite laths are formed in following quenching process. Performance of parts significantly is increased due to refining microstructure.
|
|
Received: 09 August 2010
Published: 17 November 2011
|
|
|
|
| [1] |
JIANG Yue-yue, WANG Zhao-dong, DENG Xiang-tao. Effect of trace rare earth Ce on martensitic transformation behavior of ultra-high strength low alloy steel[J]. Iron and Steel, 2020, 55(6): 84-90. |
| [2] |
WU Zhi-guang, GONG Xue-ting, LI Xin, ZHAO Ji-qing, GONG Zhi-hua. Effect of heat treatment process on creep-rupture property of 20Cr1Mo1VTiB bolt steel[J]. Iron and Steel, 2020, 55(6): 101-106. |
| [3] |
TIAN Ya-qiang1,BI Wen-qiang1,PAN Hong-bo2,LI Hong-bin1,ZHENG Xiao-ping1,CHEN Lian-sheng1. Effect of carbide evolution on Lüders behavior of cold rolled ART 0.1C-7Mn steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(6): 505-511. |
| [4] |
FENG Lu-lu1,2,HU Feng1,QIAO Wen-wei3,LU Xiu-yu4，ZHANG Guo-hong5. Microstructure and properties of 150mm ultra heavy 07MnCrMoVR hydropower steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(5): 400-405. |
| [5] |
CAO Yun-fei, YU Wei, LIU Min, JIANG Rui, WANG Chun. Austenite grain growth model of 38MnSiVS bearing microalloyed forging steel[J]. Iron and Steel, 2020, 55(5): 103-108. |
| [6] |
FENG Lu-lu1,2,WU Kai-ming1,3,YU Hong-wei4,ZHAO Hua-zhong5. Production status and developing tendency of high strength and toughness steel for hydropower station[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(3): 175-185. |
|
|
|
|
2011, Vol. 46 
