Laser processed TiC-Al₁₃Fe₄ composite layer formation on Al-Si alloy

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• 作者：A. Viswanathan^a ; ^{alaganviswa@gmail.com} ; ^{viswa@tau.edu.in} ; D. Sastikumar^b ; Harish Kumar^c ; A.K. Nath^d
• 关键词：Laser processing ; TiC-reinforcement ; TiC&ndash ; Al13Fe4 coating ; Wear resistive coatings ; Al&ndash ; Si alloy
• 刊名：Optics and Lasers in Engineering
• 出版年：2012
• 期刊代码：98_01438166
• 类别：cp
• 出版时间：September, 2012
• 卷：50
• 期：9
• 页码：1321-1329
• 文件大小：3063 K

摘要

TiC reinforced with Al₁₃Fe₄ matrix composite layer is produced on Al-Si alloy using 5 kW CO₂ laser. This attempt was made to identify the suitable coating compositions and laser processing parameters needed to form a TiC-Al₁₃Fe₄ composite layer. The study intended to form a composite layer which is having uniform TiC distribution, high hardness, high wear resistance and good adherence with substrate of Al-Si alloy. The results confirmed that the expected good quality composite layer has formed for the coating compositions of 75TiC-25Fe (wt%) and laser processing parameters of 2.5 kW laser power and 1.5 m min^鈭? scanning speed. TiC particles size varies from 10 to 20 渭m are reinforced with in-situ formed Al₁₃Fe₄ matrix in the composite layer. The good quality composite layer is exhibited an average hardness of about 750 HV and hardness distributions show very minimum fluctuations. The effect of TiC reinforcement with Al₁₃Fe₄ matrix in the composite layer displayed very less wear rate (3.98脳10^鈭? mg m^鈭?) than the substrate (3.85脳10^鈭? mg m^鈭?).