退火温度对高强IF钢再结晶织构及磷,硼晶界偏聚的影响
Transactions of Materials and Heat Treatment（2015）
Abstract
借助电子背散射衍射(EBSD)技术与俄歇电子能谱仪(AES)分析了不同温度退火的含磷高强IF钢的再结晶织构、晶界特征与晶界处P、B偏聚量.结果表明:随着退火温度由750℃升高到840℃,IF钢的{111}面织构强度先增加后降低.在810℃退火120 s得到最强的{111}面织构,体积百分含量大约为75％,织构的主要组分是{111} 〈112〉与{111} 〈110〉.810℃退火时样品晶界处P、B偏聚量最少,重合位置点阵(CSL)晶界与小角度晶界含量较高.合理控制高强IF钢在再结晶退火温度,有利于降低P晶界偏聚量并获得强度较高的{111}面织构.
MoreKey words
interstitial-free steel,recrystallization texture,grain boundary characteristic,grain boundary segregation
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