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Characterization of temperature-dependent tension-compression asymmetry for high-strength aluminium alloys

  • Peter HetzEmail author
  • Marion Merklein
Conference paper

Abstract

In the course of lightweight construction, modern materials with high strength and low density are essential. High-strength aluminium alloys such as 7000 series aluminium alloys meet these requirements but are only limited formable at room temperature. Thus, different heat assisted sheet metal forming processes are used to increase the formability. First investigations on the highstrength aluminium alloy AA7075 show a temperature-dependent and tensilecompressive asymmetric material behaviour. Since both tensile and compressive forces occur in sheet metal forming processes, an understanding of temperaturedependent tension-compression asymmetry is vital to set up material models for process design. Until now, the tension-compression asymmetry has barely been investigated for high-strength aluminium alloys at different temperatures. Therefore, further experimental studies are necessary. Within this contribution, the material behaviour of AA7020-T6 and AA7075-T6 is hence examined under uniaxial tensile and compressive load at different temperatures.

Charakterisierung der temperaturabhängigen Zug- Druck-Asymmetrie von höherfesten Aluminiumlegierungen

Abstract

Im Zuge des Leichtbaus sind moderne Werkstoffe mit hoher Festigkeit und geringer Dichte unverzichtbar. Höherfeste Aluminiumlegierungen der 7000er Serie erfüllen diese Anforderungen, sind jedoch bei Raumtemperatur nur begrenzt umformbar. Deshalb werden verschiedene wärmeunterstützte Blechum-formprozesse eingesetzt, um die Umformbarkeit zu erhöhen.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Lehrstuhl für FertigungstechnologieErlangenGermany
  2. 2.Friedrich-Alexander-Universität Erlangen-NürnbergErlangenGermany

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