Microstructure and properties of laser direct deposited CuNi17Al3Fe1.5Cr alloy

作     者：Yong-zhong Zhang Can Huang Rui Vilar 

作者机构：Center for Composites General Research Institute for Non-ferrous Metals Beijing 100088 China Department of Materials Engineering and Institute of Materials and Surfaces Science and Engineering Instituto Superior Técnico 1049-001 Lisbon Portugal 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2011年第18卷第3期

页      面：325-329页

核心收录：

学科分类：090601[农学-基础兽医学] 08[工学] 09[农学] 0906[农学-兽医学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the Major State Basic Research and Development Program of China (No.2006CB605206-1) 

主　　题：copper alloys laser deposition microstructure mechanical properties 

摘      要：Thin walls of a copper-base alloy with the nominal composition CuNi17Al3Fe1.5Cr were successfully prepared by laser direct deposition additive manufacturing. The microstructure, as revealed by optical and scanning electron microscopy, indicated that the deposited material was fully dense and with a dendritic microstructure. The dendrites are parallel to the build-up direction, which is also the heat con-duction direction during deposition. X-ray diffraction analysis results show that the deposited material is composed of a single phase and a copper-based solid solution. Some precipitate particles of metal silicides were observed in the interdendritic region by scanning electron mi-croscopy. The ultimate tensile strength along the laser scanning direction reaches 735 MPa. The hardness is about Hv0.1 300.