| 引用本文: | 高绪涛,孙蓟泉,赵爱民,张明明,唐荻.贝氏体区等温时间对TRIP钢残奥及力学性能影响[J].材料科学与工艺,2011,19(6):123-128.DOI:10.11951/j.issn.1005-0299.20110622. |
| GAO Xu-tao,SUN Ji-quan,ZHAO Ai-min,ZHANG Ming-ming,TANG Di.Effect of austempering isothermal-time at bainite field on retained austenite and mechanical properties in TRIP steel[J].Materials Science and Technology,2011,19(6):123-128.DOI:10.11951/j.issn.1005-0299.20110622. |
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| 摘要: |
| 为研究贝氏体区等温时间对热轧TRIP钢残余奥氏体和力学性能的影响,采用金相显微镜、X射线衍射、拉伸实验等方法对3种不同贝氏体区等温时间下制备的热轧TRIP钢进行分析.结果表明:随着贝氏体等温时间的延长,残余奥氏体量减少而残余奥氏体碳含量增加,残余奥氏体晶粒尺寸及残余奥氏体形貌变化不大;热轧TRIP钢的力学性能随着贝氏体等温时间的延长,表现为低抗拉强度、高延伸率和高屈服强度. |
| 关键词: 热轧TRIP钢 贝氏体区等温时间 残余奥氏体 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20110622 |
| 分类号:TG142.1 |
| 基金项目:国家高技术研究发展计划资助项目(2008AA03Z502) |
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| Effect of austempering isothermal-time at bainite field on retained austenite and mechanical properties in TRIP steel |
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GAO Xu-tao, SUN Ji-quan, ZHAO Ai-min, ZHANG Ming-ming, TANG Di
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Research Institute of Metallurgical Engineering,University of Science & Technology Beijing,Beijing 100083,China
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| Abstract: |
| To study the effect of austempering isothermal-time at bainite field on retained austenite and mechanical properties of hot rolled transformation-induced plasticity(TRIP) steels,optical microscopy(OM),X-ray diffraction(XRD) and tensile test were used to analyze hot rolled TRIP steels which were prepared by three different austempering isothermal-time at bainite field.The results show that different austempering isothermal-time has little impact on grain size and morphology of retained austenite.Carbon content of retained austenite decreases with the reducing of austempering isothermal-time at bainite field but the amounts of retained austenite have the opposite trend.When the austempering isothermal-time at bainite field become longer,the tensile strength is lower,the yield strength and elongation become higher. |
| Key words: hot rolled TRIP steels austempering isothermal-time at bainite field retained austenite mechanical properties |
