| 高Cr铁素体耐热钢连续冷却相变行为 |
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| 引用本文： | 高秋志,张旦天,刘家泳,刘永长,刘晨曦,严泽生.高Cr铁素体耐热钢连续冷却相变行为[J].材料热处理学报,2011,32(9). |
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| 作者姓名： | 高秋志 张旦天 刘家泳 刘永长 刘晨曦 严泽生 |
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| 作者单位： | 1. 天津大学材料科学与工程学院先进连接技术天津市重点实验室,天津,300072
2. 天津大学材料科学与工程学院先进连接技术天津市重点实验室,天津300072／天津钢管集团股份有限责任公司,天津014010 |
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| 基金项目： | 国家自然科学基金钢铁联合基金重点项目(50834011) |
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| 摘 要： | 基于传统高Cr铁素体耐热钢系的合金成分,对合金元素进行了一定范围内的调整,设计出一种新型高Cr铁素体系耐热钢。该钢的回火组织主要为大量板条马氏体＋少量铁素体组成。在差分膨胀仪上测定了不同冷却速度新钢的热膨胀曲线,进而制定该钢种的连续冷却转变（CCT）曲线。结果表明,随着冷却速度升高,相变点降低,马氏体板条宽度变小,铁素体由连续长条状向多边形结构和短条状转变,硬度值升高。
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| 关 键 词： | 高Cr铁素体耐热钢 热膨胀 CCT曲线 显微组织 硬度 |
Transformation behavior of high Cr ferritic heat-resistant steel under continuous cooling |
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| GAO Qiu-zhi,ZHANG Dan-tian,LIU Jia-yong,LIU Yong-chang,LIU Chen-xi,YAN Ze-sheng, Corporation,Tianjin ,China.Transformation behavior of high Cr ferritic heat-resistant steel under continuous cooling[J].Transactions of Materials and Heat Treatment,2011,32(9). |
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| Authors: | GAO Qiu-zhi ZHANG Dan-tian LIU Jia-yong LIU Yong-chang LIU Chen-xi YAN Ze-sheng Corporation Tianjin China |
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| Affiliation: | GAO Qiu-zhi1,ZHANG Dan-tian1,2,LIU Jia-yong1,LIU Yong-chang1,LIU Chen-xi1,YAN Ze-sheng1,2(1.Tianjin Key Laboratory of Advanced Jointing Technology,School of Materials Science and Engineering,Tianjin University,Tianjin 300072,China,2.Tianjin Pipe(Group) Corporation,Tianjin 014010,China) |
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| Abstract: | A new high Cr ferritic heat-resistant steel was developed based on traditional T91 ferritic heat-resistant steel by adjusting its elements and contents.Microstructure of the tempered steel mainly consists of lath martensite and ferrite.Continuous cooling transformation(CCT) curves of the ferritic heat-resistant steel were obtained by dilatometric test on a differential dilatometer.The results show that the critical transformation temperature decreases with the increase of cooling rate.As the cooling rate in... |
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| Keywords: | high Cr ferritic heat-resistant steel thermal dilatometric measurements CCT curve microstructure microhardness |
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