Title
Warm deep-drawing and post drawing analysis of two Al-Mg-Si alloys
Author
Ghosh, M.
Miroux, A.
Werkhoven, R.J.
Bolt, P.J.
Kestens, L.A.I.
Publication year
2014
Abstract
The increasing use of aluminium alloys in light weight structural applications is restricted mainly due to their lower room temperature formability compared to steels. Forming at higher temperature is seen as a promising solution to this problem. In the present investigation two Al-Mg-Si alloys (EN AW-6016 and EN AW-6061) were deep-drawn at room temperature and 250 C and their behaviour during drawing were compared. The effect of ram speed, drawing ratio, holding time, and temper was also investigated. Among the parameters investigated temperature was found to have the most significant effect on the force-displacement response. Because anisotropy has been an important concern during the deep-drawing process, this parameter was also investigated by looking at the earing profile. With increasing temperature the amplitude of earing decreased while the number of ears remained the same, indicating that there is no change in anisotropy with temperature. The cup thickness increases from the bottom of the cup to the flange with a local minimum around the mid-height of the wall. © 2013 Elsevier B.V.
Subject
Mechanics, Materials and Structures
MIP - Materials for Integrated Products
TS - Technical Sciences
High Tech Systems & Materials
Materials
Industrial Innovation
Aluminium alloy 6xxx
Earing
Force-displacement
Metal forming
Thickness profile
Warm deep-drawing
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DOI
https://doi.org/10.1016/j.jmatprotec.2013.10.020
TNO identifier
485689
ISSN
0924-0136
Source
Journal of Materials Processing Technology, 214 (4), 756-766
Document type
article