Surface modification of titanium alloy with laser cladding RE oxides reinforced Ti₃Al-matrix composites

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• 作者：Jianing Li ; Chuanzhong Chen ; ^{czchen@sdu.edu.cn} ; Diangang Wang
• 关键词：A. Metal&ndash ; matrix composites ; B. Wear ; D. Surface analysis ; E. Surface treatments
• 刊名：Composites Part B ; Engineering
• 出版年：2012
• 期刊代码：18_13598368
• 类别：ms
• 出版时间：April, 2012
• 卷：43
• 期：3
• 页码：1207-1212
• 文件大小：1594 K

摘要

Ti₃Al-matrix composites were prepared by laser cladding of the Al₃Ti/TiB₂/Al₂O₃ pre-placed powders on the Ti-6Al-4V alloy, which can improve the wear resistance of the substrate. With addition of the proper content of RE oxides (nano-Y₂O₃), this composite coating exhibited finer microstructure and better wear resistance. Nevertheless, excessive RE oxides could lead to the production of the micro-crack, and also decrease the temperature of the molten pool leading to the present of the un-melted TiB₂ block, which can significantly decrease the wear resistance of this composite coating.