期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 212, 期 11, 页码 2474-2483出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2012.06.016
关键词
Aluminium; Hot isostatic pressing; Laser processing; Metal matrix composites
Selective laser melting (SLM) was used to manufacture Al composite parts from AI/5-15 wt%Fe2O3 powder mixtures and followed by hot isostatic pressing (HIP) post-treatment, in order to assess the influence of HIP on density, hardness and microstructure. It was found that the HIP post-treatment slightly increased the density, but it failed to efficiently density the material due to formation of thick oxide bands between solids within SLM process, expanding with increasing the iron oxide. The hardness also decreased after HIP, attributed to high temperature annealing impact of HIP post-treatment on microstructure (such as coarsening, coalescence and transformation of phases). The microstructural phases before HIP were a combination of equilibrium and stable phases (i.e. Al13Fe4 and alpha-Al2O3) plus phases such as Al2Fe, AlFe, Fe3Al, and intermediate-Al2O3 (formed in high Fe2O3 contents), but only equilibrium and stable phases remained after HIP post-treatment. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据