Numerical investigation of introduction of HFQ® process manufacturing of A-pillar part

To meet the challenges of the automotive industry in recent decades, engineers have responded with new advanced materials and new technological processes suitable to form the new materials. The appearance of aluminium and its alloys in the automotive industry was justified by its lower density compa...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-06, Vol.1157 (1), p.12023
Main Author: Lukacs, Zsolt
Format: Article
Language:English
Subjects:
Aluminum base alloys
Automobile industry
Automotive engineering
Feasibility studies
Formability
Forming limits
High strength alloys
Hot forming
Material properties
Software
Tensile tests
Thermal simulators
Weight reduction
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Summary:To meet the challenges of the automotive industry in recent decades, engineers have responded with new advanced materials and new technological processes suitable to form the new materials. The appearance of aluminium and its alloys in the automotive industry was justified by its lower density compared to steels and by the weight reduction arising from it. The lower ductility of aluminium alloys with sufficient strength initiated the development of new innovative technology (HFQ®). This paper presents a numerical feasibility study using the AutoForm software system by comparing two technological processes, i.e. the Press Hardening of Steels (PHS®) vs. Hot Forming and Quenching (HFQ®) of aluminium alloys. The Thermo-Solver module of the AutoForm software system includes material card for the 22MnB5 steel grade but does not for the AA7075 high strength aluminium alloy. Therefore, the material parameters that are necessary for hot forming simulation by the AutoForm must be determined experimentally. For this purpose, the GLEEBLE 3500 thermo-mechanical simulator was used to determine the basic material properties with hot uniaxial tensile tests and hot formability tests were performed to determine the forming limits (FLC).
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1157/1/012023