Author:
Vuorinen Esa,Özügürler Almila,Ion John,Eriksson Katarina,Somani Mahesh,Karjalainen Leo,Allain Sébastien,Caballero Francisca
Abstract
Hot forming combined with austempering and quenching and partitioning (QP) processes have been used to shape two cold rolled high silicon steel sheets into hat profiles. Thermal simulation on a Gleeble instrument was employed to optimize processing variables to achieve an optimum combination of strength and ductility in the final parts. Microstructures were characterized using optical and scanning electron microscopy and X-ray diffraction. Tensile strengths (Rm) of 1190 and 1350 MPa and elongations to fracture (A50mm) of 8.5 and 7.4%, were achieved for the two high-silicon steels having 0.15 and 0.26 wt % C, respectively. Preliminary results show that press hardening together with a QP heat treatment is an effective method of producing components with high strength and reasonable tensile ductility from low carbon containing steels that have the potential for carbide free bainite formation. The QP treatment resulted in faster austenite decomposition during partitioning in the steels in comparison with an austempering treatment.
Funder
The European Research Fund for Coal and Steel
Subject
General Materials Science,Metals and Alloys
Reference29 articles.
1. A review on hot stamping
2. Hot Stamping Hits Heights. Automotive Manufacturing Solutions (AMS)
https://automotivemanufacturingsolutions.com/process-materials/hot-stamping-hits-heights
3. A review of the physical metallurgy to the hot press forming of advanced high strength steel;Fan;Steel Res. Int.,2009
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献