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| Influences of post weld heat treatment on fatigue crack growth behavior of TIG welding of 6013 T4 aluminum alloy joint (Part 1. Fatigue crack growth across the weld metal) Gunawan Dwi Haryadi and Seon Jin Kim*
The Journal of Mechanical Science and Technology, vol. 25, no. 9, pp.2161-2170, 2011
Abstract : The present study evaluates the influences of PWHT on FCG behavior and tensile properties of TIG butt welded Al 6013-T4 sheets.
Crack propagation tests were carried out on compact tension (CT) specimens. The T82 heat treatment was varied in three artificial aging
times (soaking) of 6, 18 and 24 hours. The results of T82 heat treatment with artificial aging variations were tested for their fatigue crack
growth rates at the main metal zone, the heat-affected zone (HAZ), and the welded metal zone. It has been observed that the various agings
in heat treatment T82 are sensitive to the mechanical properties (fatigue crack growth rate test, tensile test). The results show that
PWHT-T82 for 18 hours aging is the highest fatigue resistance, while the aging 18 hours provided the highest tensile test result.
Keyword :
A1 6013 T4; Post welding heat treatment; T-82; Fatigue crack growth rate; Longitudinal welded joint; TIG welding; Tensile strength
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