预变形对低碳钢应变时效的影响

材料热处理学报, 2016, 37(12): 127-131.

预变形对低碳钢应变时效的影响

赵圣诗 ^1, , 李维娟 ^2, , 张冲冲 ^3, , 杜林 ^4, , 王山生 ^5, , 苑小峰 ^6,

1.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

2.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

3.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

4.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

5.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

6.辽宁科技大学材料与冶金学院,辽宁鞍山,114051

基金项目: 国家自然科学基金(51274121)

关键词：预变形 , 应变时效 , BH值 , 内耗 , 屈服点伸长率

Influence of pre-strain on strain aging of a low carbon steel

Keywords： pre-strain , strain aging , BH value , internal friction , yield point elongation

通过拉伸实验和内耗测试分析预变形对低碳钢烘烤硬化性能和屈服点伸长率的影响.结果表明,在170℃不同时间保温和多次随炉加热至400℃保温10 min两种时效工艺下,预变形在2％～6％时,随预变形增加,烘烤硬化(BH)值降低,Snoek-Kê-K(o)ster(SKK)峰峰高增加;在170℃时效预变形在5％～ 16％时,随预变形增加,吕德斯带扩展所需要的剪切应力增加,屈服点伸长率增加.

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材料期刊网

预变形对低碳钢应变时效的影响

Influence of pre-strain on strain aging of a low carbon steel

参考文献