Effect of T6 Heat Treatment on the Scratch Wear Behavior of Extruded Al-12wt.%Si Alloy

• Autorzy: Kang Yeon-Ji , Kim Jong-Ho , Hwang Jong-Il , Lee Kee-Ahn

Identyfikatory

DOI

10.24425/amm.2019.127588

• Języki publikacji: EN

Abstrakty

EN

This study investigated the effect of T6 heat treatment on the microstructure and scratch wear behavior of hypoeutectic Al-12wt.%Si alloy manufactured by extrusion. Microstructural observation identified spherical eutectic Si phases before and after the heat treatment of alloys (F, T6). Phase analysis confirmed Al matrix and Si phase as well as Al₂Cu and Al₃Ni, Mg₂Si in both alloys. In particular, Al₂Cu was finer and more evenly distributed in T6 alloy. This resulted in Vickers hardness of T6 alloy that was 2.3 times greater compared to F alloy. The scratch wear test was conducted using constant load scratch test (CLST) mode and multi-pass scratch test (MPST) mode. The scratch coefficient and worn out volume obtained by such were used to evaluate wear properties before and after heat treatment. In the case of T6 alloy, its scratch coefficient was lower than F alloy in all load ranges. After 15 repeated tests to measure worn out volume, F alloy and T6 alloy measured 1.2×10^-1 mm³ and 7.8×10^-2 mm³, respectively. In other words, the wear resistance of T6 alloy were confirmed to be better than those of F alloy. In addition, this study attempted to identify the microstructural factors that contribute to the better scratch wear resistance of T6 alloy and wear mechanism from surface and cross-section observations after the wear tests.

Słowa kluczowe

EN

Al-12wt.%Si alloy; scratch test; wear-resistance; T6 heat treatment

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2019
• Tom: Vol. 64, iss. 2
• Strony: 617--622
• Opis fizyczny: Bibliogr. 18 poz., fot., rys.

Twórcy

autor

Kang Yeon-Ji

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Republic of Korea

autor

Kim Jong-Ho

• Research Institute of Industrials Science & Technology, Pohang 37673, Republic of Korea

autor

Hwang Jong-Il

• Light Metal Solution Co., Ltd, Yesan 32446, Republic of Korea

autor

Lee Kee-Ahn

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Republic of Korea

Bibliografia

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Uwagi

EN

1. This research was supported by Dual Use Technology Program from Republic of Korea.

PL

2. Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).