Crystallographic orientation control of pure chromium via laser powder bed fusion and improved high temperature oxidation resistance

Gokcekaya, Ozkan; Hayashi, Naohiro; Ishimoto, Takuya et al.

Additive Manufacturing, 2020, 36, 101624

Number of Access:602（2025-07-18 10:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89797

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Title
Crystallographic orientation control of pure chromium via laser powder bed fusion and improved high temperature oxidation resistance
Creator
CreatorName
Gokcekaya, Ozkan
CreatorName
Hayashi, Naohiro
NRID
1000050508835 1000050508835
ORCID
0000-0003-0081-0591 0000-0003-0081-0591
researchmap permalink
i_taku i_taku
Scopus Author ID
35310484700 35310484700
CreatorName
Ishimoto, Takuya
NRID
1000040507901 1000040507901
CreatorName
Ueda, Kyosuke
NRID
1000020198394 1000020198394
CreatorName
Narushima, Takayuki
NRID
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
Subject
Chromium
Crystallographic texture
Grain boundary
High-temperature oxidation
Laser powder bed fusion
Microstructure
Description
Gokcekaya O., Hayashi N., Ishimoto T., et al. Crystallographic orientation control of pure chromium via laser powder bed fusion and improved high temperature oxidation resistance. Additive Manufacturing, 36, 101624. https://doi.org/10.1016/j.addma.2020.101624.
Abstract
This is the first comprehensive study on the development of a cubic crystallographic texture in pure chromium (Cr) manufactured using laser powder bed fusion (LPBF) with different laser energy densities to alter its microstructure and high-temperature oxidation behavior. An increase in the laser energy density led to the formation of a strong crystallographic texture, which was preferentially oriented in the (100) plane, and there were microstructural improvements in the pure Cr. The grain size of the (100)-oriented Cr was larger than that of the randomly oriented Cr. In addition, the high-angle grain boundary and coincident site lattice (CSL) boundary characteristics were altered. The (100)-oriented Cr exhibited a decrease in the oxide thickness that was due to the decrease in the grain boundary density with a larger grain size and an increase in the CSL boundary ratio. In contrast, the Cr with a random texture showed higher oxidation kinetics and spallation of the oxide layer. The oxidation kinetics of the pure Cr manufactured using LPBF obeyed the parabolic rate law. However, the crystal orientation affected the oxidation of the Cr as the (100)-oriented pure Cr displayed a lower parabolic rate constant, indicating that the (100)-oriented Cr was oxidation-resistant. This is the first report to demonstrate the cubic crystallographic texture formation and the improvement of high-temperature oxidation resistance in Cr manufactured using LPBF.
Publisher
Elsevier
Source Title
Additive Manufacturing
Volume (Issue)
36
Page
101624
Date of Issued
2020-12-01
Language
English
Handle URL
https://hdl.handle.net/11094/89797
eISSN
22148604
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.addma.2020.101624
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article