Selective laser melting of TiC/Ti bulk nanocomposites: Influence of nanoscale reinforcement

被引：192
作者：
Gu, Dongdong [1 ]
Meng, Guangbin [1 ]
Li, Chuang [1 ]
Meiners, Wilhelm [2 ]
Poprawe, Reinhart [2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China
[2] Rhein Westfal TH Aachen, Fraunhofer Inst Laser Technol ILT, Chair Laser Technol LLT, D-52074 Aachen, Germany
来源：
SCRIPTA MATERIALIA | 2012年 / 67卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Nanocomposite; Metal matrix composite (MMC); Laser treatment; Solid freeform processes; Selective laser melting (SLM); METAL-MATRIX COMPOSITES; INJECTION; BEHAVIOR; TI; PARTICLES; COATINGS; TITANIUM; POWDER; LAYERS; ALLOY;
D O I：
10.1016/j.scriptamat.2012.04.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Selective laser melting (SLM), as a new production route, was applied to prepare nanocrystalline TIC-reinforced Ti matrix nanocomposites. The microstructural and mechanical properties of SLM-processed nanocomposites were sensitive to the nanoscale TiC addition. The optimal TiC content was determined to be 12.5 wt.%, and the homogeneously dispersed TIC reinforcement had a nanoscale lamellar structure that was completely different to the starting nanoparticle morphology. The 98.3% dense TiC/Ti nanocomposites had an elevated microhardness 577HV(0.2), a considerably low coefficient of friction 0.19, and a reduced wear rate 2.3 x 10(-16) m(3) N-1 m(-1) lap(-1). (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：185 / 188
页数：4
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