热成形钢相变试验影响因素分析
Analysis of influencing factors in phase transformation test of hot formed steel
雷娜 1周志超 1杨艳龙 1赵乃胜 1邱宇 1单显飞1
作者信息
- 1. 北京首钢股份有限公司,河北迁安 064400
- 折叠
摘要
为提高金属材料相变试验数据的准确性,以一种热成形钢为例,运用热膨胀法对相变试验中的多种影响因素进行试验分析.试验结果表明:加热速度、顶杆材质等因素对试验结果影响显著;表面处理方法、零点位移、真空度、试样两端平行度、热电偶丝焊点距离等对试验结果影响较小.制定出合适的试验工艺、严谨操作过程,在一定程度上可减小试验数据误差,提高试验结果准确性.
Abstract
In order to improve the accuracy of phase transformation test data for metal materials,the thermal expansion method was employed to analyze various influencing factors in phase change tests using one kind of hot formed steel as the example.The results showed that the factors such as heating speed and top rod material had a significant impact on the test results,while the surface treatment method,zero displacement,vacuum degree,parallelism at both ends of the sample,and distance between thermocouple wire welding points had a relatively low influence on the test results.The development of appropriate experimental techniques and rigorous operational processes could reduce errors of the experimental data to a certain extent and improve the accuracy of experimental results.
关键词
热成形钢/膨胀法/相变试验Key words
hot formed steel/expansion method/phase transformation test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据