理化检验-物理分册2025，Vol.61Issue(6)：10-12,30,4.DOI:10.11973/lhjy-wl240233
DP600热轧双相钢扩孔试验结果的影响因素
Factors affecting the results of hole expansion test for DP600 hot-rolled dual phase steel
刘明辉 1刘步婷 1向前 1向维华 1余渊1
作者信息
- 1. 武汉钢铁有限公司质量检验中心,武汉 430083
- 折叠
摘要
Abstract
A hole expansion test was conducted on DP600 hot-rolled dual phase steel,and the influence of the advancing rate of the punch and the crack opening width on the results of the hole expansion test was analyzed.The results show that the faster the advancing rate of the punch and the wider the crack opening after hole expansion,the greater the ultimate hole expansion rate of the specimen.A regression model was established between the ultimate hole expansion rate and the test thickness,as well as the crack opening width of the specimen,under fixed conditions of punch advance rate and edge pressure.It was found that the ultimate hole expansion rate was inversely proportional to the square of the specimen thickness and the square of the crack opening width,and directly proportional to the specimen thickness and crack opening width.关键词
扩孔试验/凸模推进速率/裂纹开口宽度/试样厚度/回归模型Key words
hole expansion test/punch advance rate/crack opening width/sample thickness/regression model分类
通用工业技术引用本文复制引用
刘明辉,刘步婷,向前,向维华,余渊..DP600热轧双相钢扩孔试验结果的影响因素[J].理化检验-物理分册,2025,61(6):10-12,30,4.
