The microstructure and mechanical properties of deposited-IN718 by selective laser melting
作者： Zemin Wang , Kai Guan , Ming Gao , Xiangyou Li , Xiaofeng Chen
DOI: 10.1016/J.JALLCOM.2011.10.107
关键词: Indentation hardness 、 Microstructure 、 Ductility 、 Selective laser melting 、 Phase (matter) 、 Metallurgy 、 Grain boundary 、 Materials science 、 Characterization (materials science) 、 Ultimate tensile strength
摘要: Selective laser melting (SLM) technology based on powder bed has been used to manufacture IN718 samples. The starting material, manufacturing processes, heat treatment and characterization procedures of mechanical properties are presented. It is found that the microstructure is crucial for the mechanical properties of IN718. A regular microstructure with good metallurgical bonding, minimal defects and fine dendritic grains is formed by SLM. After heat treatment, the regular dendritic structure disappears and a needle-like δ phase …
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