摘要
本文主要介绍中碳合金结构钢经整体塑性变形、热处理后再进行表面冷变形工艺是提高材料疲劳强度的有效途径。分析了强化规律与疲劳强度的关系,并探讨了疲劳裂纹扩展机制及表面冷变形强化微观机理。
This paper mainly presents that constructional mid-carbon alloy steel,after bulk moulding deformation,heat treatment and cold surface deformation can raise fatigue strength of materials effectively.It also analyses the relation between its strengthening law and fatigue strenjth.Fatigue crack growth mechanism and cold surface deformation strengthening micro-mechanism are also studied.
关键词
表面变形
中碳合金结构钢
疲劳强度
合金结构钢
surface deformation,constructional mid-carbon alloy steel,fatigue strength