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 orming 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.
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.
Original language | English |
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Title of host publication | IOP Conf. Series: Materials Science and Engineering 159 (2016) 012001 |
DOIs | |
Publication status | Published - 2016 |
Event | Conference on "Challenges in Forming High-Strength sheets" - voestalpine Stahlwelt voestalpine-Straße 4, 4020 Linz, Austria, Linz, Austria Duration: 12 Jun 2016 → 15 Jun 2016 |
Conference
Conference | Conference on "Challenges in Forming High-Strength sheets" |
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Country/Territory | Austria |
City | Linz |
Period | 12/06/16 → 15/06/16 |
Fields of Expertise
- Advanced Materials Science