Rapid fabrication of Al-based bulk-form nanocomposites with novel reinforcement and enhanced performance by selective laser melting

被引：233

作者：

Gu, Dongdong ^{[1
]}

Wang, Hongqiao ^{[1
]}

Dai, Donghua ^{[1
]}

Yuan, Pengpeng ^{[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, Chair Laser Technol LLT, Fraunhofer Inst Laser Technol ILT, D-52074 Aachen, Germany

来源：

SCRIPTA MATERIALIA | 2015年 / 96卷

基金：

中国国家自然科学基金;

关键词：

Laser treatment; Powder consolidation; Metal matrix composites (MMCs); Nanocomposite; Selective laser melting (SLM); IN-SITU FABRICATION; COMPOSITES; MICROSTRUCTURE; POWDER; STATE;

D O I：

10.1016/j.scriptamat.2014.10.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel ring-structured nanoscale TiC reinforcement with a regular distribution was tailored along the grain boundaries of the matrix by selective laser melting (SLM) to produce TiC/AlSi10 Mg nanocomposite parts. Relative to the SLM-processed unreinforced AlSi10 Mg part, the TiC/AlSi10 Mg nanocomposite part with the novel reinforcement architecture exhibited elevated microhardness (188.3 HV0.1) and tensile strength (486 MPa) without a reduction in elongation (10.9%), due to the combined effects of grain refinement and grain boundary strengthening caused by the ring-structured nanoscale TiC reinforcement. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：25 / 28

页数：4

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