Other language title
Badr Kamoon
Title of article
Microstructural Evaluation for TIG Welding of AA6061-T6 using ER5356 Filler Metal; in Postweld and as-Weld Treatment
Author/Authors
Kamoon, Badr Al Furat Al Awsat Technical University, IRAQ , Dahe, Salam Abeed Al Furat Al Awsat Technical University, IRAQ , Obaid, Zuhair H. Al Furat Al Awsat Technical University, IRAQ
Pages
11
From page
154
To page
164
Abstract
AA6061-T6, as a heat treatable alloy, is a sensitive alloy to any thermal cycle. Heat can be imposed to AA6061-T6 during tungsten inert gas welding (TIG) and the microstructure of alloy can be affected subsequently. The purpose of this study is to evaluate the microstructure of as-weld and postwelded samples. Heat affected zone (HAZ) in two different temperatures (solution and aging temperature) in as-weld sample was revealed. Microstructure and hardness were restored in AA6061-T6 by applying post weld heat treatment (PWHT), however, liquid cracking (LC) was found in partial melted zone (PMZ). Whereas filler metal-ER5356- was not a heat treatable alloy, however, its microstructure was changed from a dendrite one to equiaxed grains with closed boundaries and displayed higher hardness from (60) HV to (80) HV due to the post weld heat treatment (PWHT).
Keywords
Aluminum alloy , AA6061-T6 , ER5356 , microstructure , post weld heat treatment and liquid cracking
Journal title
Journal of Mechanical Engineering Research and Developments
Serial Year
2020
Full Text URL
Record number
2601688
Link To Document