| 回火工艺对COST-FB2转子钢组织与性能的影响 |
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| 引用本文： | 殷会芳,杨钢,赵吉庆,包汉生,胡日. 回火工艺对COST-FB2转子钢组织与性能的影响[J]. 钢铁研究学报, 2021, 33(9): 936-942. DOI: DOI:10.13228/j.boyuan.issn1001-0963.20200193 |
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| 作者姓名： | 殷会芳 杨钢 赵吉庆 包汉生 胡日 |
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| 作者单位： | 钢铁研究总院特殊钢研究所,北京 100081;北京钢研高纳科技股份有限公司,北京 100081 |
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| 基金项目： | 高强高耐蚀不锈钢;应用资助项目 |
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| 摘 要： | 利用OM、SEM和TEM等手段研究了回火工艺对COST-FB2转子钢的显微组织与力学性能的影响,结果表明:570℃一次回火后,马氏体板条内有杆状Fe3 C和细小颗粒状的MX,板条界有少量颗粒状碳化物析出;700℃二次回火后,板条内杆状Fe3 C和板条界上颗粒状碳化物消失或转变成M23 C6型碳化物.经570℃一次回火,...
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| 关 键 词： | COST-FB2转子钢 回火工艺 碳化物 强韧性 |
Effect of tempering on microstructure and properties of COST-FB2 rotor steel |
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| YIN Huifang,YANG Gang,ZHAO Jiqing,BAO Hansheng,HU Ri. Effect of tempering on microstructure and properties of COST-FB2 rotor steel[J]. Journal of Iron and Steel Research, 2021, 33(9): 936-942. DOI: DOI:10.13228/j.boyuan.issn1001-0963.20200193 |
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| Authors: | YIN Huifang YANG Gang ZHAO Jiqing BAO Hansheng HU Ri |
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| Affiliation: | 1.Institute for Special Steel, Central Iron and Steel Research Institute， Beijing 100081, China；2.Gaona Aero Material Co., Ltd.， Beijing 100081, China |
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| Abstract: | The effect of tempering on microstructure and mechanical properties of COST-FB2 rotors steel was investigated by SEM and TEM. The results show that the bar-shaped Fe3C and the fine particle-shaped MX precipitate in martensitic lath, and few particle-shaped carbides precipitate at lath boundaries after the first tempering at 570℃. After the second tempering at 700℃, the rod-like Fe3C and granular carbides disappear or transform to the fine and dispersive M23C6 carbides. The sample of COST-FB2 rotors steel has higher strength and lower impact energy after the first tempering at 570℃. The strength of COST-FB2 rotors steel decreases slightly, and the impact energy improves significantly after the second tempering at 700℃. The better strength and toughness match of COST FB2 rotor steel is obtained during the different temperature tempering. |
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| Keywords: | Key words：COST-FB2 rotor steel tempering coarsening precipitation stength and toughness |
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