Hybrid Additive Manufacturing of MS1-H13 Steels via Direct Metal Laser Sintering

被引：0
作者：
Shakerin, Sajad [1 ]
Mohammadi, Mohsen [1 ]
机构：
[1] Univ New Brunswick, Marine Addit Mfg Ctr Excellence MAMCE, Fredericton, NB E3B 5A1, Canada
来源：
TMS 2020 149TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS | 2020年
基金：
加拿大自然科学与工程研究理事会;
关键词：
Hybrid additive manufacturing; Direct metal laser sintering; Maraging steel; Microstructure and interface; MECHANICAL-PROPERTIES; EVOLUTION; PERFORMANCE; BEHAVIOR;
D O I：
10.1007/978-3-030-36296-6_26
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A bimetal steel was additively manufactured by depositing maraging steel powder (MS1) on top of a hot work tool steel H13 through the direct metal laser sintering (DMLS) technique. The microstructure of the substrate-H13 and DMLS-MS1 as well as the interfacial morphology of the hybrid MS1-H13 steel were characterized using optical microscopy (OM) and scanning electron microscopy (SEM). The microhardness tests were carried out to investigate the mechanical behavior of the hybrid MS1-H13 steel. The results showed that no cracks, porosities, or discontinuities were formed at the interface proving a reliable hybrid MS1-H13 steel. In addition, the hybrid additive manufacturing process had no detrimental influence on the substrate-H13. A very sharp interface as narrow as 2 mu m was detected between the DMLS-MS1 and the substrate-H13 hot work tool steel. The microhardness tests across the interface revealed an abrupt increase of the hardness values on the printed side leading to a stronger interface.
引用
收藏
页码：277 / 283
页数：7
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