Fabrication and Characterization of AISI 420 Stainless Steel Using Selective Laser Melting
Autor: | Luo Xiwang, Shifeng Wen, Yusheng Shi, Liu Ying, Xiao Zhao, Qingsong Wei, Bo Song |
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Rok vydání: | 2015 |
Předmět: |
Fabrication
Materials science Scanning electron microscope Mechanical Engineering Metallurgy Microstructure medicine.disease_cause Industrial and Manufacturing Engineering Rockwell scale Mechanics of Materials Phase (matter) Mold medicine Relative density General Materials Science Selective laser melting |
Zdroj: | Materials and Manufacturing Processes. 30:1283-1289 |
ISSN: | 1532-2475 1042-6914 |
Popis: | Selective laser melting (SLM) offers great possibilities to fabricate metal tools with a complex geometry, but there are limitations regarding some materials. This work focuses on the fabrication of AISI 420 stainless steel using SLM for the application of plastic injection mold. The melt characteristic of the powders was firstly concluded, and then the microstructure, phase composition, and hardness were characterized using scanning electron microscopy, X-ray diffraction, and Rockwell hardness test, respectively. The results showed that cellular microstructure was observed along the direction of the maximum heat flow. The proportion of the phases varies with the change of SLM processing parameters, which directly affects on the hardness of the parts. The relative density over 99% was obtained and the highest hardness presents 50.7 HRC, which meets the requirement of plastic injection molding application. |
Databáze: | OpenAIRE |
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