Concept Validation for Selective Heating and Press Hardening of Automotive Safety Components with Tailored Properties
Author(s)
Li, N
Lin, J
Dean, TA
Dry, D
Balint, D
Type
Journal Article
Abstract
A new strategy termed selective heating and press hardening, for hot stamping of boron steel parts with tailored properties is proposed in this paper. Feasibility studies were carried out through a specially designed experimental programme. The main aim was to validate the strategy and demonstrate its potential for structural optimisation. In the work, a lab-scale demonstrator part was designed, and relevant manufacturing and property-assessment processes were defined. A heating technique and selective-heating rigs were designed to enable certain microstructural distributions in blanks to be obtained. A hot stamping tool set was designed for forming and quenching the parts. Demonstrator parts of full martensite phase, full initial phase, and differentially graded microstructures have been formed with high dimensional quality. Hardness testing and three point bending tests were conducted to assess the microstructure distribution and load bearing performance of the as-formed parts, respectively. The feasibility of the concept has been validated by the testing results.
Date Issued
2014-09
Date Acceptance
2014-09-01
Citation
Key Engineering Materials, 2014, 622-623, pp.1124-1131
ISSN
1013-9826
Publisher
Trans Tech Publications
Start Page
1124
End Page
1131
Journal / Book Title
Key Engineering Materials
Volume
622-623
Copyright Statement
© 2014 Trans Tech Publications. The final version of record is available from http://dx.doi.org/10.4028/www.scientific.net/KEM.622-623.1124.
Subjects
Materials
09 Engineering
Publication Status
Published
Date Publish Online
2014-09-01