Laser metal deposition of functionally graded Ti6Al4V/TiC
Laser metal deposition of functionally graded Ti6Al4V/TiC
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DOI：
10.1016/j.matdes.2015.06.135
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发表时间：
2015-11-04
影响因子：
8.4
通讯作者：
Akinlabi, E. T.
中科院分区：
文献类型：
--
作者：
Mahamood, R. M.;Akinlabi, E. T.
功能梯度材料（FGM）是一种具有改进性能的先进材料，使其能够承受传统复合材料无法承受的恶劣工作环境。女性生殖器切割在军事、医学和航空航天等多个领域得到应用。各种制造工艺用于生产功能梯度材料，包括：粉末冶金、物理气相沉积、化学气相沉积工艺和激光金属沉积工艺。激光金属沉积（LMD）工艺是一种增材制造工艺，可用于在一个单一工艺中直接从零件的三维（3D）计算机辅助设计（CAD）模型生产功能梯度材料。LMD工艺是一种相当新的制造工艺，是一种高度非线性的工艺。工艺参数在LMD过程中非常重要，并且需要针对所需的应用进行优化。在这项研究中，功能梯度钛合金复合材料的生产使用优化的工艺参数为每种材料组合，通过在初步研究中开发的模型和功能梯度材料的特点是通过冶金，机械和摩擦学研究。结果表明，所产生的功能梯度材料具有改善的性能相比，在恒定的工艺参数下产生的所有材料组合。(C)2015爱思唯尔有限公司版权所有。
Functionally graded materials (FGMs) are advanced materials with improved properties that enable them to withstand severe working environment which the traditional composite materials cannot withstand. FGM found their applications in several areas which include: military, medicine and aerospace. Various manufacturing processes are used to produce functionally graded materials that include: powder metallurgy, physical vapour deposition, chemical vapour deposition process and laser metal deposition process. Laser metal deposition (LMD) process is an additive manufacturing process that can be used to produce functionally graded material directly from the three dimensional (3D) computer aided design (CAD) model of the part in one single process. LMD process is a fairly new manufacturing process and a highly non-linear process. The process parameters are of great importance in LMD process and they need to be optimized for the required application. In this study, functionally graded titanium alloy composite was produced using optimized process parameters for each material combination as obtained through a model that was developed in an initial study and the FGM was characterized through metallurgical, mechanical and tribological studies. The results show that the produced FGM has improved properties when compared to those produced at constant processing parameters for all material combinations. (C) 2015 Elsevier Ltd. All rights reserved.