Characterization of High Strength Al-Zn-Mg Alloy Sheet for Hot Stamping-Reference-Cited by-同舟云学术

Characterization of High Strength Al-Zn-Mg Alloy Sheet for Hot Stamping

Published:2014-06 Issue: Volume:794-796 Page:796-801
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Kumar Manoj¹^ORCID,Sotirov Nikolay¹,Chimani Christian¹

Affiliation:

1. Austrian Institute of Technology

Abstract

High formability is required to stamp aluminium into complex structural automotive components such as the A-pillar and B-pillar. Formability of an Al-Zn-Mg (AA7xxx) alloy sheet is characterised through hot stamping a prototype part and simulating paint baking procedures. The precipitation behaviour is assessed by differential scanning calorimetry and the tensile properties measured between 350°C and 475°C over a range of strain rates from 0.01s-1to 1s-1. Natural ageing was found to increase the hardness of the hot stamped parts due to the formation of GP zone precipitates. A simulated three step paint baking procedure produced η precipitates and resulted in a yield strength and ultimate tensile strength of 480MPa and 512MPa, respectively.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.794-796.796.pdf

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