The Bendability of Ultra High strength Steels

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes

Hazra, S.K.^1 ; Efthymiadis, P.^1 ; Alamoudi, A.^2 ; Kumar, R.L.V.^1 ; Shollock, B.^1 ; Dashwood, R.^3

WMG, University of Warwick, Coventry

CV4 7AL, United Kingdom^1

School of Engineering, University of Warwick, Coventry

CV4 7AL, United Kingdom^2

Coventry University, Priory Street, Coventry

CV1 5FB, United Kingdom^3

关键词: Automotive manufacturers;    Environmental legislations;    Flexible process;    Higher-strength materials;    Public demands;    Roll forming;    Ultra high strength steel;    Work hardening rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/734/3/032097/pdf
DOI  :  10.1088/1742-6596/734/3/032097

来源: IOP

【 摘 要 】

Automotive manufacturers have been reducing the weight of their vehicles to meet increasingly stringent environmental legislation that reflects public demand. A strategy is to use higher strength materials for parts with reduced cross-sections. However, such materials are less formable than traditional grades. The frequent result is increased processing and piece costs. 3D roll forming is a novel and flexible process: it is estimated that a quarter of the structure of a vehicle can be made with a single set of tooling. Unlike stamping, this process requires material with low work hardening rates. In this paper, we present results of ultra high strength steels that have low elongation in a tension but display high formability in bending through the suppression of the necking response.