Challenges in compound forging of steel-aluminum parts

authored by: Klaus Georg Kosch, Bernd Arno Behrens
Abstract: In times of increasing energy costs automotive lightweight construction is gaining in importance. This paper deals with the production of hybrid steel-aluminum compounds by forging. The compound forging process is a promising method to successfully manufacture functional parts by applying resource-saving process steps. Nevertheless, challenges resulting from different material properties must be solved. The heating of hybrid material work pieces made of steel and aluminum is a great challenge. Steel is forged at a temperature of at least T _st = 900°C, while aluminum should not exceed a temperature of T _Al = 500°C For achieving the required temperature gradient extensive experimental investigations have been carried out. Intermetallic phases form during the manufacturing process and can influence the bonding and the global part quality. In addition, methods for the characterization of the joining zone between the materials steel and aluminum are analyzed and the factors influencing the formation of intermetallic phases are determined experimentally.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Pages: 169-176
No. of pages: 8
Publication date: 15.05.2012
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Condensed Matter Physics, Mechanics of Materials, Metals and Alloys
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{82a485ef359246b29a7020c8c747a1d1,
title = "Challenges in compound forging of steel-aluminum parts",
abstract = "In times of increasing energy costs automotive lightweight construction is gaining in importance. This paper deals with the production of hybrid steel-aluminum compounds by forging. The compound forging process is a promising method to successfully manufacture functional parts by applying resource-saving process steps. Nevertheless, challenges resulting from different material properties must be solved. The heating of hybrid material work pieces made of steel and aluminum is a great challenge. Steel is forged at a temperature of at least T st = 900°C, while aluminum should not exceed a temperature of T Al = 500°C For achieving the required temperature gradient extensive experimental investigations have been carried out. Intermetallic phases form during the manufacturing process and can influence the bonding and the global part quality. In addition, methods for the characterization of the joining zone between the materials steel and aluminum are analyzed and the factors influencing the formation of intermetallic phases are determined experimentally.",
keywords = "Compound forging, Intermetallic phase, Massive forming, Steel-aluminum joining",
author = "Kosch, {Klaus Georg} and Behrens, {Bernd Arno}",
year = "2012",
month = may,
day = "15",
language = "English",
isbn = "9781118291405",
series = "TMS Annual Meeting",
pages = "169--176",
booktitle = "Extraction and Processing Division - 2012 EPD Congress - Held During the TMS 2012 Annual Meeting and Exhibition",
note = "2012 EPD Congress - TMS 2012 Annual Meeting and Exhibition ; Conference date: 11-03-2012 Through 15-03-2012",
}