超高强度钢中疲劳裂纹扩展方式的实验观察THE EXPERIMENTAL OBSERVATION OF BEHAVIOR OF FATIGUE CRACK PROPAGATION IN AN ULTRAHIGH STRENGTH STEEL
高惠临,谈育煦,王笑天
摘要(Abstract):
本文采用透射电镜和扫描电镜等多种实验手段研究了低碳马氏体型超高强度钢三种典型热处理状态的疲劳裂纹扩展行为。观察和分析了原奥氏体晶界、马氏体板条束和马氏体板条晶等不同组织单元与疲劳裂纹扩展方式间的关系,并提出了这类钢疲劳裂纹扩展的模型。
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基金项目(Foundation):
作者(Author): 高惠临,谈育煦,王笑天
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