Synthesizing of Functionally Graded Surface Composites by Laser Powder Deposition Process for Slurry Erosion Applications
Synthesizing of Functionally Graded Surface Composites by Laser Powder Deposition Process for Slurry Erosion Applications
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通过激光粉末沉积工艺合成用于浆料侵蚀应用的功能梯度表面复合材料
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
R. Kovacevic
中科院分区：
文献类型：
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作者：
E. Foroozmehr;R. Sarrafi;S. Hamid;R. Kovacevic
金属-陶瓷复合材料在表面改性中有着广泛的应用。激光熔覆作为一种表面处理技术，是存款金属-陶瓷复合材料梯度功能层的一种很有前途的方法。在这项研究中，AISI 4140和镍作为基体和碳化钨（WC），碳化钛（TiC），和纳米碳化钨作为陶瓷部件，在四个不同的组合用于存款在AISI 4140基板。陶瓷的体积百分比从底部到顶部增加。对试样的显微组织、显微硬度以及试样顶面的残余应力进行了研究和比较。
Metal-ceramic composites are used extensively in surface modification. Laser cladding, as one of the surface treatment techniques, shows a promising method to deposit functionally graded layers of metal-ceramic composite. In this study, AISI 4140 and nickel as the matrix and tungsten carbide (WC), titanium carbide (TiC), and nano-WC as the ceramic parts are used in four different combinations for deposit on AISI 4140 substrates. The volume percentage of the ceramics is increased from the bottom to the top. The microstructure and micro-hardness of the samples and residual stress of the top surface of the samples are studied and compared.