| LIGHTWEIGHT ALLOYS |
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| Effect of Al-B-C Master Alloy on the Thermal Conductivity and Mechanical Property of 6201 Aluminum Alloy and Its Mechanism Analysis |
| ZHANG Pengju, QIAN Zhao*, LIU Xiangfa
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| Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China |
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Abstract The 6xxx series Al-Mg-Si alloys have properties such as relatively high carrier mobility, high thermal conductivity, and higher mechanical pro-perties. It have broad development prospects and can be applied in electric equipment, heat sink, conductive materials, etc. In order to ensure the rapid and efficient operation of the equipment, improving the heat-conducting performance of the material is an urgent problem to be solved for industry. In this work, the 6201 aluminum alloy was investigated. The Al-B-C master alloy was added into the 6201 alloy to introduce Al3BC and AlB2 particles, and the combination of boron-treatment and secondary-phase strengthening promoted the simultaneous improvement of thermal conductivity and strength of the material. The microstructure, grain size and fracture morphology of the materials were characterized and analyzed. Through this method, the thermal conductivity of 6201 alloy was increased to 210.02 W/(m·K), which was by 22.5% higher than the pristine material. The yield strength and tensile strength were increased to 245 MPa and 250 MPa respectively at 200 ℃.
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Published: 31 May 2021
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| Fund:Natural Science Foundation of Shandong Province (ZR2018MEM001), the National Natural Science Foundation of China(51731007), “Future Plan” Youth Scholars Program of Shandong University. |
About author:: Zhao Qian, Asso. Prof., received his Ph.D degree from KTH Royal Institute of Technology, Sweden in 2013. Since 2014, he has been working in the School of Materials Science and Engineering, Shandong University. The main research fields are light-metal based structural and functional materials investigated using both theoretical calculations and experimental techniques.
Pengju Zhang graduated from Wuhan University of Technology with a bachelor's degree in engineering in 2018. From September 2018 to June 2021, he studied in the School of Materials Science and Engineering of Shandong University, mainly engaged in the research of electrical conductivity, thermal conductivity and mechanical properties of 6201 aluminum alloy. |
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2021, Vol. 35 
