INVESTIGATION OF THE EFFECTS OF PREHEAT TEMPERATURE ON AL-5083 ALLOY MICROSTRUCTURE IN WELDING WITH GMAW METHOD

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SABERI R.; DEHKORDI E.H.

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Paper Information

Journal: Journal of Advanced Processes in Materials Engineering Year:2012 | Volume:6 | Issue:2 (21) Page(s): 21-29

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Title

INVESTIGATION OF THE EFFECTS OF PREHEAT TEMPERATURE ON AL-5083 ALLOY MICROSTRUCTURE IN WELDING WITH GMAW METHOD

Author(s)

SABERI R. | DEHKORDI E.H. | Issue Writer Certificate

Keywords

5083 ALLOYQ2

MICROSTRUCTUREQ2

CHANGING OF PREHEAT TEMPERATUREQ3

GMAWQ2

AL-MG AND AL-MG-SI AND AL-FE-MN PRECIPITATIONSQ3

Abstract

Among the Aluminum-Magnesium alloys, 5083 ALLOY has specific characteristics such as high mechanical features, good weldability, and the most important of all its excellent resistance to corrosion under water. These characteristics caused 5083 ALLOY to be used widely in the marine industries. One of the welding methods for this alloy, especially suited for thick plates, is GMAW welding method. In welding process of this alloy, in order to eliminate surface moisture and to avoid porosity, lack of fusion and possible distortion, preheat is needed. In this project Al5083-H321 alloy test plates were welded in six different preheat temperatures with GMAW method, using ER5183 filler metal, to investigate the effects of preheat temperature on MICROSTRUCTURE. Optical metallugraphy, macrography and scanning electron microscope equipped with EDS, were used to examine the MICROSTRUCTURE of this alloy, and also to determinate the effect of changing the preheat temperature on the size of grains, and created precipitations in weld metal and heat affected zone. Finally three kinds of precipitation included precipitations rich in Magnesium (Al-Mg), rich in Iron and Manganese (Al-Fe-Mn) and also precipitations rich in Silicon and Magnesium (Al-Mg-Si) were observed in this alloy. Besides, increasing the preheat temperature caused an increase in the amount of created precipitations and the size of grains and the heat affected zone (HAZ).

Cites

EFFECT OF HEAT INPUT ON MICROSTRUCTURE, MECHANICAL PROPERTIES AND CORROSION BEHAVIOR OF 5083-H321 ALUMINUM ALLOY WELDED JOINT USING P-MIG PROCESS

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APA: Copy

SABERI, R., & DEHKORDI, E.H.. (2012). INVESTIGATION OF THE EFFECTS OF PREHEAT TEMPERATURE ON AL-5083 ALLOY MICROSTRUCTURE IN WELDING WITH GMAW METHOD. ADVANCED PROCESSES IN MATERIALS, 6(2 (21)), 21-29. SID. https://sid.ir/paper/172742/en

Vancouver: Copy

SABERI R., DEHKORDI E.H.. INVESTIGATION OF THE EFFECTS OF PREHEAT TEMPERATURE ON AL-5083 ALLOY MICROSTRUCTURE IN WELDING WITH GMAW METHOD. ADVANCED PROCESSES IN MATERIALS[Internet]. 2012;6(2 (21)):21-29. Available from: https://sid.ir/paper/172742/en

IEEE: Copy

R. SABERI, and E.H. DEHKORDI, “INVESTIGATION OF THE EFFECTS OF PREHEAT TEMPERATURE ON AL-5083 ALLOY MICROSTRUCTURE IN WELDING WITH GMAW METHOD,” ADVANCED PROCESSES IN MATERIALS, vol. 6, no. 2 (21), pp. 21–29, 2012, [Online]. Available: https://sid.ir/paper/172742/en

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