The interaction between short-term heat-treatment and the formability of an Al-Mg-Si alloy regarding deep drawing processes

Michael Machhammer, Christof Sommitsch

Publikation: Beitrag in einer FachzeitschriftKonferenzartikelBegutachtung

Abstract

Engineering
Paper • The following article is Open access
The interaction between short-term heat-treatment and the formability of an Al-Mg-Si alloy regarding deep drawing processes

M Machhammer1 and C Sommitsch1

Published under licence by IOP Publishing Ltd
IOP Conference Series: Materials Science and Engineering, Volume 159, IDDRG2016 conference on "Challenges in Forming High-Strength Sheets". 12–15 June 2016, Linz, Austria Citation M Machhammer and C Sommitsch 2016 IOP Conf. Ser.: Mater. Sci. Eng. 159 012001
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michael.machhammer@tugraz.at
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1 Institute Tools and Forming, Graz University of Technology, Graz, Austria
DOI

https://doi.org/10.1088/1757-899X/159/1/012001

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Abstract

Research conducted in recent years has shown that heat-treatable Al-Mg-Si alloys (6xxx) have great potential concerning the design of lightweight car bodies. Compared to conventional deep drawing steels the field of application is limited by a lower formability. In order to minimize the disadvantage of a lower drawability a short-term heat-treatment (SHT) can be applied before the forming process. The SHT, conducted in selected areas on the initial blank, leads to a local reduction of strength aiming at the decrease of critical stress during the deep drawing process. For the successful procedure of the SHT a solid knowledge about the crucial process parameters such as the design of the SHT layout, the SHT process time and the maximum SHT temperature are urgently required. It also should be noted that the storage time between the SHT and the forming processes affects the mechanical properties of the SHT area. In this paper, the effect of diverse SHT process parameters and various storage time-frames on the major and minor strain situation of a deep drawn part is discussed by the evaluation of the forming limit diagram. For the purpose of achieving short heating times and a homogenous temperature distribution a one side contact heating tool has been used for the heat treatment in this study.
Originalspracheenglisch
Aufsatznummer012001
Seitenumfang8
FachzeitschriftIOP Conference Series: Materials Science and Engineering
Jahrgang159
Ausgabenummer2001
DOIs
PublikationsstatusVeröffentlicht - 19 Dez 2016
VeranstaltungIDDRG 2016: Challenges in Forming High-Strength Sheets - voestalpine Stahlwelt, Linz, Österreich
Dauer: 13 Jun 201615 Jun 2016

Schlagwörter

  • Deep drawing
  • Short term heat treatment
  • Al-Mg-Si alloys

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