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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11736
Title: Influences of friction stir welding on the microstructure, mechanical and corrosion behaviour of Al-Zn-Mg aluminium alloy 7039
Authors: Sharma C.
Dwivedi, Dheerendra Kumar
Kumar, Pradeep
Published in: Engineering Review
Abstract: This paper presents the influence of friction stir welding (FSW) on the microstructure, mechanical and corrosion behavior of precipitation hardening Al-Zn-Mg alloy AA7039. The microstructure of weld joints was investigated using an optical microscope. The grains in weld nugget zone (WNZ) and thermo-mechanically affected zone (TMAZ) of weld joints were finer than in the base metal and a reverse trend was observed for heat affected zone (HAZ). Mechanical properties of friction stir weld joints were determined by tensile and micro hardness test. The ultimate tensile strength of weld joints was found approximately equal to the base metal while yield strength and ductility of weld joints were found lower than in the base metal. HAZ of weld joints was more susceptible to corrosion than WNZ, TMAZ and base metal. The HAZ exibits the highest current density followed by the base metal.
Citation: Engineering Review (2015), 35(3): 267-274
URI: http://repository.iitr.ac.in/handle/123456789/11736
Issue Date: 2015
Publisher: University of Rijeka
Keywords: Al-Zn-Mg aluminum alloy
Corrosion behavior
Friction stir welding
Mechanical properties
Microstructure
ISSN: 13309587
Author Scopus IDs: 35622409000
7004266679
55952759400
Author Affiliations: Sharma, C., Faculty of Mechanical Engineering, Rustamji Institute of Technology, Boarder Security Force Academy, Tekanpur Gwalior, Madhya Pradesh, 475005, India
Dwivedi, D.K., Faculty of Mechanical Engineering, Indian Institute of Technology, Roorkee, Uttarkhand, 247667, India
Kumar, P., Faculty of Mechanical Engineering, Indian Institute of Technology, Roorkee, Uttarkhand, 247667, India
Corresponding Author: Sharma, C.; Faculty of Mechanical Engineering, Rustamji Institute of Technology, Boarder Security Force AcademyIndia
Appears in Collections:Journal Publications [ME]

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