Analysis of influencing factors in phase transformation test of hot formed steel
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.
hot formed steelexpansion methodphase transformation test
NETL
NSTL
万方数据
