Additive Manufacturing of Nickel-Base Superalloy René N5 through Scanning Laser Epitaxy (SLE) − Material Processing, Microstructures, and Microhardness Properties

Amrita Basak; Suman Das

doi:10.1002/adem.201600690

Additive Manufacturing of Nickel-Base Superalloy René N5 through Scanning Laser Epitaxy (SLE) − Material Processing, Microstructures, and Microhardness Properties

Amrita Basak, Suman Das

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Nickel-base superalloy René N5 is deposited on cast René N5 substrates with [100] and [001] crystallographic orientations through scanning laser epitaxy (SLE) applied to gas-atomized pre-alloyed René N5 powder. Single-pass fabrication of crack-free deposits exceeding 1000 micron is achieved. High-resolution optical microscopy reveals that the deposits have 10 times finer primary dendritic arm spacing compared to the substrate. SEM reveals the presence of finer microstructure in the deposit region compared to the substrate region. XRD and EBSD investigations show that the substrate crystallographic orientation does not affect the unidirectional crystal growth in the deposit region. Vickers microhardness values are higher in the deposits compared to the substrate.

Original language	English (US)
Article number	1600690
Journal	Advanced Engineering Materials
Volume	19
Issue number	3
DOIs	https://doi.org/10.1002/adem.201600690
State	Published - Mar 1 2017

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1002/adem.201600690

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title = "Additive Manufacturing of Nickel-Base Superalloy Ren{\'e} N5 through Scanning Laser Epitaxy (SLE) − Material Processing, Microstructures, and Microhardness Properties",

abstract = "Nickel-base superalloy Ren{\'e} N5 is deposited on cast Ren{\'e} N5 substrates with [100] and [001] crystallographic orientations through scanning laser epitaxy (SLE) applied to gas-atomized pre-alloyed Ren{\'e} N5 powder. Single-pass fabrication of crack-free deposits exceeding 1000 micron is achieved. High-resolution optical microscopy reveals that the deposits have 10 times finer primary dendritic arm spacing compared to the substrate. SEM reveals the presence of finer microstructure in the deposit region compared to the substrate region. XRD and EBSD investigations show that the substrate crystallographic orientation does not affect the unidirectional crystal growth in the deposit region. Vickers microhardness values are higher in the deposits compared to the substrate.",

author = "Amrita Basak and Suman Das",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

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T1 - Additive Manufacturing of Nickel-Base Superalloy René N5 through Scanning Laser Epitaxy (SLE) − Material Processing, Microstructures, and Microhardness Properties

AU - Basak, Amrita

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N2 - Nickel-base superalloy René N5 is deposited on cast René N5 substrates with [100] and [001] crystallographic orientations through scanning laser epitaxy (SLE) applied to gas-atomized pre-alloyed René N5 powder. Single-pass fabrication of crack-free deposits exceeding 1000 micron is achieved. High-resolution optical microscopy reveals that the deposits have 10 times finer primary dendritic arm spacing compared to the substrate. SEM reveals the presence of finer microstructure in the deposit region compared to the substrate region. XRD and EBSD investigations show that the substrate crystallographic orientation does not affect the unidirectional crystal growth in the deposit region. Vickers microhardness values are higher in the deposits compared to the substrate.

AB - Nickel-base superalloy René N5 is deposited on cast René N5 substrates with [100] and [001] crystallographic orientations through scanning laser epitaxy (SLE) applied to gas-atomized pre-alloyed René N5 powder. Single-pass fabrication of crack-free deposits exceeding 1000 micron is achieved. High-resolution optical microscopy reveals that the deposits have 10 times finer primary dendritic arm spacing compared to the substrate. SEM reveals the presence of finer microstructure in the deposit region compared to the substrate region. XRD and EBSD investigations show that the substrate crystallographic orientation does not affect the unidirectional crystal growth in the deposit region. Vickers microhardness values are higher in the deposits compared to the substrate.

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Additive Manufacturing of Nickel-Base Superalloy René N5 through Scanning Laser Epitaxy (SLE) − Material Processing, Microstructures, and Microhardness Properties

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