Formability investigation using a new test design for hot stamping processes
Author(s)
Mohamed, M
Lin, J
Foster, A
Dean, T
Dear, J
Type
Journal Article
Abstract
Hot stamping is widely used in the forming of lightweight automotive panel components. The process optimisation requires knowledge of constitutive relations of work-piece material but assessment of formability of materials in hot stamping conditions is exceptionally challenging. A testing method and corresponding specimen design are developed in this paper for evaluating formability of materials in hot stamping conditions. A series of tests have been carried out for AA6082 aluminium alloy, at different forming rates and failure modes have been analysed. A set of stress-state dependent damage equations for AA6082 is introduced and this has been input into the FE code, ABAQUS. An FE model is developed and validated from the experimental results. Failure modes at particular forming conditions are predicted and designed specimen shapes are optimised for different forming conditions. It is concluded that work-piece design is related to ductility for hot stamping conditions and recommendations for work-piece design are given.
Date Issued
2016-10-31
Date Acceptance
2016-10-01
Citation
International Journal of Materials and Product Technology, 2016, 54 (1), pp.3-19
ISSN
0268-1900
Publisher
Inderscience Enterprises Ltd
Start Page
3
End Page
19
Journal / Book Title
International Journal of Materials and Product Technology
Volume
54
Issue
1
Copyright Statement
© 2017 Inderscience Enterprises Ltd.
Sponsor
Engineering & Physical Science Research Council (E
Grant Number
EP/I038616/1
Subjects
0910 Manufacturing Engineering
0912 Materials Engineering
0913 Mechanical Engineering
Materials
Publication Status
Published