对一种低碳马氏体型超高强度钢疲劳断口薄膜试样的电子衍射分析表明,疲劳塑性区内的残余奥氏体在交变应力的作用下转变为马氏体.本文就这种应变诱发相变对疲劳性能的作用机理进行了分析讨论.
The retained austenite at the fatigue plastic zone in a low-carbon mar-rensitic ultra-high strength steel transforms to martensite was observed. The influenceof this strain induced transformation on the fatigue behavior of the steel has beendiscussed.
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