卢敏,周晓光,刘振宇,王国栋,狄国标

• 1:冶金工业出版社
• 2:东北大学轧制技术及连轧自动化国家重点实验室
• 3:首钢技术研究院

摘要(Abstract)：

采用两种冷却路径控制工艺试制了X80级抗大变形管线钢,并利用扫描电镜和透射电镜进行了显微组织观察,研究了轧后冷却工艺对X80级抗大变形管线钢组织性能的影响。结果表明,轧后采用前段空冷+后段快冷的"两段式冷却"工艺所得显微组织为先共析铁素体、针状铁素体、少量贝氏体和M/A岛,组织中软硬相匹配良好,屈强比为0.76;而超快冷+空冷+快冷的"三段式冷却"工艺获得针状铁素体、贝氏体和M/A岛混合组织,屈强比为0.8。两种冷却工艺均可获得抗大变形管线钢,差别在于应用三段式冷却工艺得到实验钢的强度较高,可用于开发更高级别抗大变形管线钢,并且空冷时间缩短。

关键词(KeyWords)： X80;屈强比;抗大变形;超快冷;控制冷却

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务费资助(N090307002);; 国家“十一五”科技支撑计划项目(2006BAE03A08);; 国家高技术研究发展计划项目(2007AA03Z504)

作者(Author): 卢敏,周晓光,刘振宇,王国栋,狄国标

DOI: 10.13289/j.issn.1009-6264.2011.07.017

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