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| X100管线钢连续冷却转变的显微组织 | |
| 引用本文： | 张骁勇,高惠临,吉玲康,庄传晶.X100管线钢连续冷却转变的显微组织[J].材料热处理学报,2010,31(1). |
| 作者姓名： | 张骁勇 高惠临 吉玲康 庄传晶 |
| 作者单位： | 1. 西安建筑科技大学材料科学与工程学院,陕西西安,710055;西安石油大学材料科学与工程学院,陕西西安,710065 2. 西安石油大学材料科学与工程学院,陕西西安,710065 3. 中国石油天然气集团公司管材研究所,陕西西安,710065 |
| 基金项目： | 国家自然科学基金项目(50874090) |
| 摘 要： | 采用热模拟技术和显微分析方法,对X100管线钢在连续冷却转变下的显微组织的变化规律进行了研究。通过X100管线钢CCT曲线的建立和组织分析表明:当冷却速度低于0.2℃/s时,组织类型以多边形铁素体(PF)为主。在0.5~10℃/s的冷却速度范围,主体组织为准多边形铁素体(QF)和粒状铁素体(GF)。当冷却速度大于20℃/s,组织以贝氏体铁素体(BF)为主。大于50℃/s的冷却速度,将形成马氏体(M)。 |
| 关 键 词： | X100管线钢 显微组织 连续冷却转变 |
Microstructure of Xl00 high strength pipeline steel during continuous cooling transformation |
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| ZHANG Xiao-yong,GAO Hui-lin,JI Ling-kang,ZHUANG Chuan-jing.Microstructure of Xl00 high strength pipeline steel during continuous cooling transformation[J].Transactions of Materials and Heat Treatment,2010,31(1). | |
| Authors: | ZHANG Xiao-yong GAO Hui-lin JI Ling-kang ZHUANG Chuan-jing |
| Affiliation: | 1;2;1.School of Materials Science and Engineering;Xi'an University of Architecture and Technology;Xi'an 710055;China;2.School of Materials Science and Engineering;Xi'an Shiyou University;Xi'an 710065;3.Tubular Goods Research Center of China National Petroleum Corporation;China |
| Abstract: | Microstrueture in a continuously cooled X100 high strength pipeline steel was investigated by means of heat simulation technique on a Gleeble-1500 simulator, optical microssope(OM)and transmission electron mieroseopy(TEM). The results show that the microstructure of X100 high strength pipeline steel is mainly composed of polygonal ferrite(PF) when the cooling rate is lower than 0. 2 ℃/s. Quasi-polygonal ferrite and granular ferrite (QF + GF)prevails in the steel with the cooling rate of 0.5 -10 ℃/s. When the cooling rate is higher than 20 ℃/s, the microstructure of X100 pipeline steel mainly consists of bainitic ferrite(BF). Martensite(M) forms in the steel with the cooling rate higher than 50 ℃/s. |
| Keywords: | X100 pipeline steel microstructure continuous cooling transformation |
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