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.
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