Pore filling during selective laser melting - assisted additive manufacturing of composites

被引：26

作者：

Maximenko, Andrey L. ^{[1
]}

Olevsky, Eugene A. ^{[1
]}

机构：

[1] San Diego State Univ, 5500 Campanile Dr, San Diego, CA 92182 USA

来源：

SCRIPTA MATERIALIA | 2018年 / 149卷

关键词：

Additive manufacturing; Selective laser melting; Liquid phase sintering; Pore filling; Modeling; DENSIFICATION; MICROSTRUCTURE; FABRICATION; PARTICLES;

D O I：

10.1016/j.scriptamat.2018.02.015

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Numerical assessment of pore-filling time during Selective Laser Melting (SLM) of metal matrix composites is conducted based on the theory of liquid-phase sintering. Modeling of 3D bi-modal packings of spherical metal and ceramic particles indicates the existence of clusters of ceramic reinforcements with various volume concentrations. During SLM the pores between ceramic particles have to be filled with liquid metal, and the pore-filling duration can be considered to be the minimum necessary time of the successful pore-free SLM processing. Based on the results of the modeling an analytical criterion for the pore-free additive manufacturing of composites utilizing SLM is developed. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：75 / 78

页数：4

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