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| 微观组织对中碳微合金非调质钢疲劳性能的影响 | |
| 引用本文： | 查小琴,惠卫军,雍岐龙,董瀚,翁宇庆,龙晋明.微观组织对中碳微合金非调质钢疲劳性能的影响[J].金属热处理,2007,32(6):92-95. |
| 作者姓名： | 查小琴 惠卫军 雍岐龙 董瀚 翁宇庆 龙晋明 |
| 作者单位： | 1. 昆明理工大学,材料与冶金工程学院,云南,昆明,650093;钢铁研究总院,先进钢铁材料技术国家工程研究中心,北京,100081 2. 钢铁研究总院,先进钢铁材料技术国家工程研究中心,北京,100081 3. 昆明理工大学,材料与冶金工程学院,云南,昆明,650093 |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 摘 要： | 用旋转弯曲疲劳试验研究了不同微观组织的中碳微合金非调质钢38MnVS的疲劳性能,并与调质处理的40Cr钢进行对比.结果表明,高温正火态38MnVS钢(38-N)具有粗大的贝氏体组织,疲劳性能最差;高温退火态(38-A)和热轧态(38-R)38MnVS钢具有粗大的网状铁素体,其疲劳性能亦较差;热锻态(38-F)具有细小均匀的微观组织和低的铁素体/珠光体硬度比,具有优于调质态40Cr钢的优异疲劳性能.因此,控制锻轧后微合金非调质钢38MnVS的微观组织可提高其疲劳性能. |
| 关 键 词： | 微观组织 中碳微合金非调质钢 疲劳性能 微观组织 中碳 微合金非调质钢 疲劳性能 影响 Steel Fatigue Properties Microstructure 控制 调质态 硬度比 珠光体 网状铁素体 均匀 锻态 钢具 热轧态 高温退火 贝氏体 高温正火 |
| 文章编号： | 0254-6051（2007）06-0092-04 |
| 修稿时间： | 2007-02-17 |
Effect of Microstructure on the Fatigue Properties of Microalloyed Medium-Carbon Steel |
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| ZHA Xiao-qin,HUI Wei-jun,YONG Qi-long,DONG Han,WENG Yu-qing,LONG Jin-ming.Effect of Microstructure on the Fatigue Properties of Microalloyed Medium-Carbon Steel[J].Heat Treatment of Metals,2007,32(6):92-95. | |
| Authors: | ZHA Xiao-qin HUI Wei-jun YONG Qi-long DONG Han WENG Yu-qing LONG Jin-ming |
| Affiliation: | 1. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming Yunnan 650093, China; 2. National Engineering Research Center of Advanced Steel Technology, Central Iron and Steel Research Institute,Beijing 100081 ,China |
| Abstract: | The effect of microstructure on the fatigue properties of microalloyed medium-carbon 38MnVS steel and quenched and tempered 40Cr steel for comparison was investigated using rotating bar bending fatigue test. The results show that 38MnVS steel with coarse bainite microstructure obtained through fast cooling after high temperature austenitizing has the worst fatigue property, and the formation of film-like ferrite along coarse prior austenite grain boundary and pearlite microstructure for either as-rolled condition or high temperature annealed condition also deteriorated the fatigue property of 38MnVS steel. However,38MnVS steel with much fine ferrite and pearlite microstructure has the best fatigue property, which is even better than that of quenched and tempered 40Cr steel. Therefore, the fatigue property of microalloyed 38MnVS steel could be improved after appropriate controlling of its microstructure after rolling. |
| Keywords: | microstructure microalloyed medium-carbon steel fatigue property |
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