Effect of Energy Input on the Characteristic of AISI H13 and D2 Tool Steels Deposited by a Directed Energy Deposition Process

Title
Effect of Energy Input on the Characteristic of AISI H13 and D2 Tool Steels Deposited by a Directed Energy Deposition Process
Author
박주현
Keywords
DIRECT METAL-DEPOSITION; 316L STAINLESS-STEEL; LASER; MICROSTRUCTURE; DIES; Energy Input; Additive Manufacturing; Traverse Speed; Equilibrium Partial Pressure; Increase Energy Input
Issue Date
2016-05
Publisher
SPRINGER
Citation
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v. 47, No. 5, Page. 2529-2535
Abstract
Among the many additive manufacturing technologies, the directed energy deposition (DED) process has attracted significant attention because of the application of metal products. Metal deposited by the DED process has different properties than wrought metal because of the rapid solidification rate, the high thermal gradient between the deposited metal and substrate, etc. Additionally, many operating parameters, such as laser power, beam diameter, traverse speed, and powder mass flow rate, must be considered since the characteristics of the deposited metal are affected by the operating parameters. In the present study, the effect of energy input on the characteristics of H13 and D2 steels deposited by a direct metal tooling process based on the DED process was investigated. In particular, we report that the hardness of the deposited H13 and D2 steels decreased with increasing energy input, which we discuss by considering microstructural observations and thermodynamics. (C) The Minerals, Metals Materials Society and ASM International 2016
URI
https://link.springer.com/article/10.1007/s11661-016-3427-5http://hdl.handle.net/20.500.11754/54404
ISSN
1073-5623; 1543-1940
DOI
10.1007/s11661-016-3427-5
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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