刘胜,米振莉,唐荻,江海涛,焦竞仪

• 1:北京科技大学高效轧制国家工程研究中心

摘要(Abstract)：

采用电子背散射衍射技术(EBSD)对Fe-Cr-Al合金在退火过程中的组织演变规律进行了研究,分析了退火时间对晶界分布、微观织构和性能的影响。结果表明:退火初期合金组织发生回复过程,晶界以小角晶界为主,织构为典型的立方晶体形变织构{001}<110>;退火时间在3～15 min内,组织发生再结晶,大角晶界急剧增加,织构转变为{111}<121>和{111}<112>;退火时间超过15 min后,合金的{111}织构组分减弱,而{001}织构组分增强。随着退火时间的延长,断后伸长率和塑性应变比(r值)先增大后减小,退火时间在15 min时断后伸长率和r值都达到最大值,分别为19.6%和1.23。r值与{111}/{001}织构强度的比值有很好的对应关系。

关键词(KeyWords)： Fe-Cr-Al合金;组织演变;EBSD;r值

Abstract:

Keywords:

基金项目(Foundation): 北京市科技计划(D07010300700701)

作者(Author): 刘胜,米振莉,唐荻,江海涛,焦竞仪

DOI: 10.13289/j.issn.1009-6264.2013.07.022

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