Surfacing weld metal properties of aluminium alloys with Al‐Cu cored wire: Surfacing of aluminium alloys (3rd report)

Autor:	S. Kurihana, Y. Kanbe, Y. Nakada, H. Koike, T. Miyake
Rok vydání:	1994
Předmět:	Materials science Mechanical Engineering Gas tungsten arc welding Metallurgy Metals and Alloys chemistry.chemical_element Welding law.invention Cracking chemistry Mechanics of Materials law Aluminium visual_art Electrode Aluminium alloy visual_art.visual_art_medium Composite material Weld metal
Zdroj:	Welding International. 8:623-629
ISSN:	1754-2138 0950-7116
DOI:	10.1080/09507119409548661
Popis:	Summary This paper describes an investigation of the properties of surfacing weld metals produced by the MIG and TIG processes using newly developed 1.2 mm dia. Al‐Cu seamless cored electrode wires. Three types of Al‐Cu cored wires with Cu contents of 40%, 45%, and 70% were tested on type A1050P (Al), A5083P (Mn‐Mg‐Al), A7075P (Cu‐Mg‐Zn‐Al), and AC4B (Si‐Cu‐Zn, cast) aluminium alloy baseplates. The results obtained may be summarised as follows. Hardness values at room temperature of HV220–260 for A5O83P and A7075P and HV200–220 for AC4B are obtained in the transverse cross‐sections of bead‐on‐plate welds produced by MIG and TIG processes. The weld hardness increases in proportion to the Cu content in the weld metal on the A1050P baseplate, and a hardness of HV300 is obtained in crack‐free conditions at 52%Cu. Weld metal cracking occurs when the weld metal Cu content exceeds 54%. Hardness measurements at elevated temperatures up to 200 °C show a moderate decrease in hardness, but a sharp decrease at a temp...
Databáze:	OpenAIRE
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