Autor:
Mohammed Ali, Ghusoon Ridha ; Ridha, Ali Zuhair ; Sadeq, Dina Abbas ; Ebraheem, Ahmed Abdullah ; Atta, Amal Sadeq
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Temat i słowa kluczowe:
low carbon steel ; gas tungsten arc ; ultrasonic peening ; mechanical properties
Abstract:
In this paper, the effect of ultrasonic peening surface treatment on the mechanical properties of TIG butt weld joints of low-carbon steel (AISI 1020) was studied. A single V-angle was made on sheets of metal used then welded at constant parameters, namely: current, voltage. ; Wire filler ER70S-3 with argon was used to obtain many butt welding joints. Some of them were subjected to ultrasonic peening at one, two, and three passes. The micro-hardness, microstructure, tensile, and bending were tested. ; The results show increases in the tensile strength after the welding process. The test results showed improvements in the tensile strength of the weldments in comparison to the base metal. ; On the other hand, the tensile strength decreased with the ultrasonic process. Nevertheless, the tensile strength increased at a high number of ultrasonic passes. On the contrary, the ultrasonic process enhanced the bending strength compared to the base metal, whereas the weldments ability to bend deteriorated.
Wydawca:
Zielona Góra: Uniwersytet Zielonogórski
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Źródło:
IJAME, volume 27, number 4 (2022)