张飞,李激光,闫晓东,陈松,王燕,刘勇

• 1:北京有色金属研究总院
• 2:北京科技大学材料科学与工程学院
• 3:辽宁科技大学材料科学与工程学院
• 4:西南铝业(集团)有限公司

摘要(Abstract)：

研究了预应变量、烘烤温度、烘烤时间等烘烤条件对TRIP600钢烘烤硬化性能的影响,并结合显微组织观察对烘烤硬化机理进行分析。结果表明,预应变量在小于8%时,烘烤硬化(BH)值随着预应变量的增加而显著增加,预应变量大于8%反而降低了烘烤硬化效应;烘烤温度小于260℃时,BH值随着烘烤温度的增加而迅速增加,超过260℃时,温度对其影响不大;2%预应变量、170℃烘烤条件下,TRIP600钢的烘烤硬化效应在数分钟内便体现出来,并在40 min达到最大,随烘烤时间的延长,BH值在37～40 MPa范围内波动。通过对TRIP600钢的烘烤硬化机理分析认为,铁素体中固溶的碳氮原子以及微细碳氮化铌析出物对位错的钉扎是TRIP600钢产生烘烤硬化的主要原因。

关键词(KeyWords)： TRIP600钢;BH值;烘烤硬化;位错钉扎

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张飞,李激光,闫晓东,陈松,王燕,刘勇

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