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Understanding the Effect of Heat Input and Sheet Gap on Porosity Formation in Fillet Edge and Flange Couch Laser Welding of AC-170PX Aluminum Alloy for Automotive Component Manufacture

A. W. Alshaer, L. Li, A. Mistry

Journal of Manufacturing Science and Engineering. 2015;137(2).

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Abstract

An investigation is reported on the characteristics of porosity formation in high power disk laser welding of AC-170PX (AA6014) alloy sheets (coated with titanium and zirconium) in two weld joint configurations: fillet edge and flange couch with AA4043 filler wire for potential automotive manufacturing applications. Porosity, macro-and microstructure characteristics, tensile strengths, microhardness, and joint geometry were investigated. It has been found that an increase in heat input and welding speed generates more porosity in both types of joints. The introduction of a 0.2 mm gap reduces porosity significantly in the fillet edge joints but it does not have noticeable effect on the flange couch joints. The mechanism of the porosity formation is discussed.

Keyword(s)

laser welding fillet edge joint flange couch joint aluminum alloy porosity joint geometry car automotive

Bibliographic metadata

Type of resource:
Content type:
Publication status:
Published
Publication type:
Publication form:
Collaborator(s):
Published date:
Language:
eng
ISSN:
Volume:
137
Issue:
2
Article number:
021011
Digital Object Identifier:
10.1115/1.4028900
Attached files embargo period:
Immediate release
Attached files release date:
14th December, 2015
Access state:
Active

Institutional metadata

University researcher(s):

Record metadata

Manchester eScholar ID:
uk-ac-man-scw:287824
Created by:
Li, Lin
Created:
14th December, 2015, 15:53:28
Last modified by:
Li, Lin
Last modified:
14th December, 2015, 15:53:28

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