Enhancing Corrosion and Wear Resistance of AA6061 by Friction Stir Processing with Fe78Si9B13 Glass Particles

Materials

Lingyu Guo²  Yan Liu²  Kechang Shen²  Chaoqun Song²  Min Yang²  Kibuem Kim¹  Weimin Wang² 

[1] Hybrid Materials Center (HMC), Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 143-747, Korea; E-Mail:;Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China; E-Mails:

关键词: aluminum alloy;    Fe₇₈Si₉B₁₃;    friction stir processing;    corrosion;    wear;   

DOI  :  10.3390/ma8085084

来源: mdpi

【 摘 要 】

The AA6061-T6 aluminum alloy samples including annealed Fe₇₈Si₉B₁₃ particles were prepared by friction stir processing (FSP) and investigated by various techniques. The Fe₇₈Si₉B₁₃-reinforced particles are uniformly dispersed in the aluminum alloy matrix. The XRD results indicated that the lattice parameter of α-Al increases and the preferred orientation factors F of (200) plane of α-Al reduces after friction stir processing. The coefficient of thermal expansion (CTE) for FSP samples increases at first with the temperature but then decreases as the temperature further increased, which can be explained by the dissolving of Mg and Si from β phase and Fe₇₈Si₉B₁₃ particles. The corrosion and wear resistance of FSP samples have been improved compared with that of base metal, which can be attributed to the reduction of grain size and the CTE mismatch between the base metal and reinforced particles by FSP, and the lubrication effect of Fe₇₈Si₉B₁₃ particles also plays a role in improving wear resistance. In particular, the FSP sample with reinforced particles in amorphous state exhibited superior corrosion and wear resistance due to the unique metastable structure.

【 授权许可】

CC BY   
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