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| 热处理工艺对CL50D车轮钢晶粒度的影响 | |
| 引用本文： | 任学冲,李胜军,高克玮,宿彦京,江波,陈刚,赵海.热处理工艺对CL50D车轮钢晶粒度的影响[J].金属热处理,2012,37(7):7-12. |
| 作者姓名： | 任学冲 李胜军 高克玮 宿彦京 江波 陈刚 赵海 |
| 作者单位： | 1. 北京科技大学国家材料服役安全科学中心,北京,100083 2. 北京科技大学材料科学与工程学院,北京,100083 3. 马鞍山钢铁股份有限公司技术中心,安徽马鞍山,243000 |
| 基金项目： | 国家高技术研究发展计划，国家自然科学基金 |
| 摘 要： | 研究了加热速率、加热温度、保温时间及冷却速率等热处理工艺参数对高速车轮钢CL50D热处理态的晶粒度和断裂韧性的影响。结果表明,对轧态车轮钢采用快速加热(10～25℃/min)至约850℃,保温30～60 min后,经1～2℃/s控制冷却至室温可得到细化且均匀的珠光体+网状铁素体组织,断裂韧性优异Kq可达90 MPa.m1/2以上。 |
| 关 键 词： | 车轮钢 热处理 晶粒度 加热速率 断裂韧性 |
Effect of heat treatment process on grain size of wheel steel CL50D |
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| REN Xuechong,LI Shengjun,GAO Kewei,SU Yanjing,JIANG Bo,CHEN Gang,ZHAO Hai.Effect of heat treatment process on grain size of wheel steel CL50D[J].Heat Treatment of Metals,2012,37(7):7-12. | |
| Authors: | REN Xuechong LI Shengjun GAO Kewei SU Yanjing JIANG Bo CHEN Gang ZHAO Hai |
| Affiliation: | 1.National Center for Materials Service Safety,University of Science and Technology Beijing,Beijing 100083,China; 2.School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China; 3.Technical Center,Maanshan Iron & Steel Company Limited,Maanshan Anhui 243000,China) |
| Abstract: | Effect of the heating rate,austenizing temperature,holding time and cooling rate on the grain size and fracture toughness KIC(or Kq)of a high speed wheel steel CL50D were studied.The results show that when austenitized at 850 ℃ with high heating rate(10-25 ℃/min) for proper holding time(30-60 min) and then air cooled in 1-2 ℃/s,the hot-rolled wheel steel can obtain fine and homogeneous pearlite and netted ferrite microstructure and high fracture toughness(90 MPa·m1/2). |
| Keywords: | wheel steel heat treatment grain size heating rate fracture toughness |
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