skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Dispersoid-free zones in the heat-affected zone of aluminum alloy welds

Abstract

The local microstructure in the heat-affected zone 1 (HAZ1) of a laser beam-welded AlpMg-Si-Cu aluminum alloy is investigated closely. Dispersoid-free zones (DFZs), where the dispersoids of the base material (BM) are dissolved, are found in the vicinity of the fusion line (FL). They are not uniformly surrounding a grain, but oriented toward the FL. Their width can be as large as 10 {mu}m. Detailed analysis has revealed a decreased silicon concentration as well as a decreased hardness of the oriented dispersoid-free zones (ODFZs). Two mechanisms for the formation of this welding metallurgical feature are discussed.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
DaimierChrysler Aerospace Airbus GmbH, Bremen (DE)
OSTI Identifier:
20075687
Alternate Identifier(s):
OSTI ID: 20075687
Resource Type:
Journal Article
Journal Name:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
Additional Journal Information:
Journal Volume: 31; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1073-5623
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MICROSTRUCTURE; ALUMINIUM BASE ALLOYS; WELDED JOINTS; LASER WELDING; HEAT AFFECTED ZONE; CONCENTRATION RATIO; HARDNESS

Citation Formats

Meyer, B.C., Doyen, H., Emanowski, D., Tempus, G., Hirsch, T., and Mayr, P. Dispersoid-free zones in the heat-affected zone of aluminum alloy welds. United States: N. p., 2000. Web. doi:10.1007/s11661-000-0263-3.
Meyer, B.C., Doyen, H., Emanowski, D., Tempus, G., Hirsch, T., & Mayr, P. Dispersoid-free zones in the heat-affected zone of aluminum alloy welds. United States. doi:10.1007/s11661-000-0263-3.
Meyer, B.C., Doyen, H., Emanowski, D., Tempus, G., Hirsch, T., and Mayr, P. Mon . "Dispersoid-free zones in the heat-affected zone of aluminum alloy welds". United States. doi:10.1007/s11661-000-0263-3.
@article{osti_20075687,
title = {Dispersoid-free zones in the heat-affected zone of aluminum alloy welds},
author = {Meyer, B.C. and Doyen, H. and Emanowski, D. and Tempus, G. and Hirsch, T. and Mayr, P.},
abstractNote = {The local microstructure in the heat-affected zone 1 (HAZ1) of a laser beam-welded AlpMg-Si-Cu aluminum alloy is investigated closely. Dispersoid-free zones (DFZs), where the dispersoids of the base material (BM) are dissolved, are found in the vicinity of the fusion line (FL). They are not uniformly surrounding a grain, but oriented toward the FL. Their width can be as large as 10 {mu}m. Detailed analysis has revealed a decreased silicon concentration as well as a decreased hardness of the oriented dispersoid-free zones (ODFZs). Two mechanisms for the formation of this welding metallurgical feature are discussed.},
doi = {10.1007/s11661-000-0263-3},
journal = {Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science},
issn = {1073-5623},
number = 5,
volume = 31,
place = {United States},
year = {2000},
month = {5}
}