Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 5    May 2012

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Effects of T6 heat treatment on mechanical, abrasive and erosive-corrosive wear properties of eutectic Al−Si alloy
A. K. GUPTA1, B. K. PRASAD1, R. K. PAJNOO2, S. DAS1

1. CSIR - Advanced Materials and Processes Research Institute, Bhopal-462026, India;
2. Central Institute of Agricultural Engineering (ICAR), Bhopal-462028, India

Abstract:The abrasive and erosive-corrosive properties of eutectic Al−Si (LM6) alloy were studied. Microstructural features of the alloy were altered by controlling the T6 heat treatment parameter, and their influence on hardness, strength and elongation, and response of the samples in erosion-corrosion and abrasion conditions were studied. Characteristics of the Al−Si alloy samples were compared with those of Al conventionally used in agricultural machineries. Fabrication of a typical component using the Al−Si alloy was also explored in order to understand the feasibility of using the alloy system for the envisaged applications. The study suggests the response of the samples in different conditions to be greatly influenced by parameters like chemical composition, microstructural features and applied load, traversal distance and test environment. The performance of even the as cast Al−Si alloy is far superior to that of the conventional Al samples, while the T6 heat treated Al−Si alloy shows improved performance. Accordingly, the as-cast as well as T6 heat treated Al−Si alloy has potential for applications in agriculture as a replacement for the conventionally used Al.

 

Key words: Al−Si alloy; heat treatment; abrasion; erosion; corrosion

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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