(西安交通大學(xué) 機(jī)械工程學(xué)院， 西安 710049)
摘 要: 利用激光熔覆技術(shù)，在ZL104合金表面原位合成了TiCp/Al復(fù)合材料層。實(shí)驗(yàn)結(jié)果表明，經(jīng)20 h混制的AlTiC粉末，在激光熔覆過(guò)程中可以充分反應(yīng)合成TiCp；在所形成的TiCp/Al復(fù)合材料層中，TiC顆粒尺寸細(xì)小，約800nm；經(jīng)激光熔覆后的TiCp/Al復(fù)合材料層中TiC分布均勻，僅表層有約20μm的TiC顆粒富集區(qū)和鄰近基底部分有20 μm的稀釋區(qū)。
關(guān)鍵字: 激光熔覆； 原位合成； 碳化鈦；復(fù)合材料
（School of Mechanical Engineering， Xi′an Jiaotong University，Xi′an 710049， P.R.China）
Abstract:By using laser cladding， TiCp/Al composite has been insitu synthesized on the ZL104 alloy surface. During laser cladding， AlTiC powder which have been milled for 20 h, could be synthesized completely as fine TiC particles which isabout 800 nm in size. Except that there is a rich zone of TiC about 20 μm thick at the top and a dilute zone of TiCp about 20 μm thick near substrate， the distribution of TiC particles is uniform in the cladding layer.
Key words: laser cladding; insitu synthesis; TiC; composite
