卷取温度、冷轧总变形量对SPHD钢力学性能的影响

详细信息

Influence of Coiling Temperature and Total Cold Rolling Reduction Rate on Mechanical Properties of SPHD Steel

1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Hot-rolled Sheet Works, Gansu Jiuquan Steel Co Ltd, Jiayuguan 735100, China

摘要: 以CSP工艺在不同卷取温度下生产的冷轧基板SPHD为实验材料,采用不同的冷轧总变形量进行冷轧并退火。通过单向拉伸实验对不同工艺条件下试样的基本成形性能指标(r值、n值)和力学性能指标(屈服强度、抗拉强度、伸长率)进行测定,并对退火试样进行X射线织构测试分析。通过对比分析发现,当卷取温度为600℃,冷轧压下量为70%时,SPHD退火后会得到较强的γ纤维织构组分和良好的力学性能及优异的冲压性能。
- CSP /
- SPHD /
- 织构 /
- 力学性能 /
- 成形性能
Abstract: SPHD hot strips produced by CSP process were coiled at different temperatures and then cold rolled with different reduction rate.After recrystallization annealing,the formability(r-value and n-value) and mechanical properties(YS,TS and A) were investigated through tensile tests.In addition,different kinds of technological conditions sheets were analyzed by means of X-ray diffraction(ODF).The results showed that fine mechanical properties,well formability and much more fraction of r-fiber texture will be obtained with coiling temperature at 610℃ and the cold-rolled reduction of 70%.
- CSP /
- SPHD /
- Texture /
- Mechanical property /
- Formability