|
|||||
|
|
| 高强度管线钢连续冷却转变及组织研究 | |
| 引用本文： | 付小强,吴素君,李志鹏,李家鼎.高强度管线钢连续冷却转变及组织研究[J].金属热处理,2010,35(1). |
| 作者姓名： | 付小强 吴素君 李志鹏 李家鼎 |
| 作者单位： | 1. 北京航空航天大学,材料科学与工程学院,北京,100191 2. 北京航空航天大学,材料科学与工程学院,北京,100191;首钢技术研究院,北京,100041 3. 首钢技术研究院,北京,100041 |
| 摘 要： | 研究低碳微合金X80和X100管线钢分别在未变形和变形条件下的连续冷却转变(CCT)行为。用G leeb le-2000热模拟试验机,结合OM、SEM和TEM等方法测定未变形和变形奥氏体的连续冷却转变曲线,并对不同冷速和变形条件下的组织进行观察分析。结果表明,冷速较低时,连续冷却转变组织主要为多边形铁素体和珠光体,随着冷速提高依次出现块状铁素体,粒状铁素体,针状铁素体,贝氏体铁素体等组织。热变形能强烈促进针状铁素体的形成,使针状铁素体的相变温度提高50~100℃,并使CCT曲线向左上角移动,同时使晶粒细化及取向更加无序。 |
| 关 键 词： | 管线钢 针状铁素体 连续冷却转变 热变形 |
Continuous cooling transformation and microstructure of high strength pipeline steel |
|
| FU Xiao-qiang,WU Su-jun,LI Zhi-peng,LI Jia-ding.Continuous cooling transformation and microstructure of high strength pipeline steel[J].Heat Treatment of Metals,2010,35(1). | |
| Authors: | FU Xiao-qiang WU Su-jun LI Zhi-peng LI Jia-ding |
| Affiliation: | 1.School of Materials Science and Engineering;Beihang University;Beijing 100191;China;2.Shougang Technical Research Institute;Beijing 100041;China |
| Abstract: | Continuous cooling transformation(CCT)behaviors of X80 and X100 low-carbon microalloyed pipeline steels were investigated under the undeformed and deformed conditions,respectively.The corresponding CCT diagrams were constructed by using a Gleeble-2000 thermomechanical simulator,and microstructure of the steels at different cooling rates and deformation conditions was observed by OM,SEM and TEM.The results show that polygonal ferrite and pearlite can be formed at low cooling rates,massive ferrite,granular fe... |
| Keywords: | pipeline steel acicular ferrite continuous cooling transformation hot deformation |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |