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. 31    No. 9    September 2021

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Effect of heat treatment on mechanical and wear properties of Zn-40Al-2Cu-2Si alloy
Temel SAVA?KAN1, Zeki AZAKLI2, Ali Pa?a HEKìMO?LU3

1. Mechanical Engineering Department, Hali? University, 34445, ?stanbul, Turkey;
2. Mechanical Engineering Department, Gümü?hane University, 29010, Gümü?hane, Turkey;
3. Mechanical Engineering Department, Recep Tayyip Erdogan University, 53100, Rize, Turkey

Abstract:In order to determine the effect of heat treatment on the mechanical and wear properties of Zn-40Al- 2Cu-2Si alloy, different heat treatments including homogenization followed by air-cooling (H1), homogenization followed by furnace-cooling (H2), stabilization (T5) and quench-aging (T6 and T7) were applied. The effects of these heat treatments on the mechanical and tribological properties of the alloy were studied by metallography and, mechanical and wear tests in comparison with SAE 65 bronze. The wear tests were performed using a block on cylinder type test apparatus. The hardness, tensile strength and compressive strength of the alloy increase by the application of H1 and T6 heat treatments, and all the heat treatments except T6, increase its elongation to fracture. H1, T5 and T6 heat treatments cause a reduction in friction coefficient and wear volume of the alloy. However, this alloy exhibits the lowest friction coefficient and wear volume after T6 heat treatment. Therefore, T6 heat treatment appears to be the best process for the lubricated tribological applications of this alloy at a pressure of 14 MPa. However, Zn-40Al-2Cu-2Si alloy in the as-cast and heat-treated conditions shows lower wear loss or higher wear resistance than the bronze.

 

Key words: Zn-Al based alloys; heat treatment; structural features; mechanical properties; lubricated friction and wear

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

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

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