Journal
MATERIALS CHARACTERIZATION
Volume 61, Issue 11, Pages 1089-1096Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2010.07.001
Keywords
Al-Si alloy; Iron rich compounds; Intermetallic modification; Wear behaviour
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The effect of iron rich intermetallics on the wear behaviour of Al-Si hypereutectic alloys has been studied Dry sliding wear tests have been conducted using a pin on disk machine under different normal loads of 18 51 74 and 100 N and at a constant sliding speed of 0 3 m/s The addition of 1 2 wt % Fe to the LM28 alloy increased the wear rate due to the formation of needle beta intermetallics Introducing 0 6 wt % Mn to the iron rich alloy changed the beta intermetallics into the modified alpha phases and therefore reduced the detrimental effect of iron TIG welding method as a surface melting process was applied on the iron and manganese containing alloy and led to a fine microstructure and increased the wear resistance (C) 2010 Elsevier Inc All rights reserved
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