刘觐,孟利,朱国辉,毛卫民

• 1:北京科技大学材料科学与工程学院
• 2:安徽工业大学材料科学与工程学院
• 3:新金属材料国家重点实验室

摘要(Abstract)：

利用电子背散射衍射(EBSD)技术对X70,X80和X100 3种管线钢进行了取向成像分析。结果表明,尽管3种管线钢的强度级别不同,微观结构存在较大的差异,但都具有相似的取向差择尤分布,其取向差主要分布在2°~15°和47°~60°区间,呈"双峰"分布特征。进一步的分析表明,奥氏体主要以K-S关系向中温铁素体转变,Dahmen的二维不变线模型验证了这一结果。K-S关系变体间特定的取向差关系是造成这3种管线钢取向差择尤分布的原因。

关键词(KeyWords)： 管线钢;组织;取向差;相变;K-S取向关系

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51072016,51071026);; 教育部高校留学回国人员项目(高等级抗大变形管线钢微观结构设计及形变机理)

作者(Author): 刘觐,孟利,朱国辉,毛卫民

DOI: 10.13289/j.issn.1009-6264.2014.03.020

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