An experimental investigation of the drawability of AA6082 sheet under different elevated temperature forming processes
File(s)
Author(s)
Zheng, K
Zhu, L
Lin, J
Dean, TA
Li, N
Type
Journal Article
Abstract
The performed research has, for the first time, investigated and compared the drawability of AA6082 at a comparable temperature range between two elevated temperature forming processes: termed (i)Low Temperature Hot Form and Quench (LT-HFQ®)or pre-cooled HFQ®, patented by Adam et al. (2015)and (ii)Direct Heating Aluminium Forming (DHAF)which represents a refinement of conventional warm forming targeting a higher temperature range. A series of uniaxial tensile and cylindrical deep drawing experiments were conducted. According to uniaxial tensile test results, the most obvious work-hardening and reasonable ductility was observed under LT-HFQ® at a deformation temperature of 350 °C and strain rate of 1 s−1, which can enhance drawability. For deep drawing experiments, it was found that preheating conditions of each process prior to forming significantly affected forming characteristics and post-formed hardness of the alloy; both the achieved maximum Draw ratio (DR)and limit Blank Holding Force (BHF)at some specific process parameters were increased under LT-HFQ®. Forming speed and temperature had significant effects on alloy deformation and thus drawability for both processes. In addition, by evaluating the post-formed hardness, process drawability and microstructural evolutions under different processes were simultaneously analyzed.
Date Issued
2019-11
Date Acceptance
2019-05-11
Citation
Journal of Materials Processing Technology, 2019, 273
ISSN
0924-0136
Journal / Book Title
Journal of Materials Processing Technology
Volume
273
Copyright Statement
© 2019 Elsevier B.V. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Commission of the European Communities
Commission of the European Communities
Engineering & Physical Science Research Council (E
Grant Number
NMP3-SE-2013-604240
723517
EP/R001715/1 / PO 1999975
Subjects
0913 Mechanical Engineering
0912 Materials Engineering
0910 Manufacturing Engineering
Materials
Publication Status
Published
Article Number
116225
Date Publish Online
2019-05-13