Homogenization and differentiation of property of tailor rolled blank of dual phase steel

2nd International Workshop on Materials Science and Mechanical Engineering

机械制造;材料科学

Ke, D.W.^1 ; Liu, X.H.^2 ; Hu, X.L.^1

State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang

110819, China^1

Research Academy, Northeastern University, Shenyang

110819, China^2

关键词: Annealing process;    Different thickness;    Energy conservation and emission reductions;    Industrial production;    Intercritical annealing;    Intercritical temperatures;    Rolling reduction;    Tailor rolled blank;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/504/1/012031/pdf
DOI  :  10.1088/1757-899X/504/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The tailor rolled blank of dual phase steel (DP-TRB) is benefit for light weight of automobiles, and contribute to the energy conservation and emission reduction of the auto industry. Two kinds of annealing process, austenitizing completely followed by cooling to intercritical temperature and intercrit ical annealing, is studied. In intercritical annealing, an inflection point inmechanical property is found at 1.5mm thickness zone (25% rolling reduction) and has big property difference between different thickness es. In the process of complet ing austenitizing followed by cooling to intercrit ical temperature, the homogenized mechanical property is shown and the difference in strength between thicknesses is 20MPa. And in this process, the influence of rolling is totally eliminated. These results can guide industrial production.