Local valence analysis of 316L austenitic stainless steel produced by laser powder bed fusion

Sato, Kazuhisa; Takagi, Shunya; Ichikawa, Satoshi et al.

Materials Letters, 2024, 372, 136978

Number of Access:449（2025-07-18 09:55 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/97368

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Title
Local valence analysis of 316L austenitic stainless steel produced by laser powder bed fusion
Creator
NRID
1000070314424 1000070314424
ORCID
0000-0001-9078-2541 0000-0001-9078-2541
researchmap permalink
read0158304 read0158304
Scopus Author ID
55552977400 55552977400
CreatorName
Sato, Kazuhisa
researchmap permalink
shunyatakagi shunyatakagi
CreatorName
Takagi, Shunya
NRID
1000080403137 1000080403137
ORCID
0000-0003-3597-1045 0000-0003-3597-1045
researchmap permalink
satoshiichikawa satoshiichikawa
Scopus Author ID
36055779800 36055779800
CreatorName
Ichikawa, Satoshi
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
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
Subject
316L stainless steel
Additive manufacturing
Corrosion resistance
Electron energy-loss spectroscopy
Laser powder bed fusion
Description
Sato K., Takagi S., Ichikawa S., et al. Local valence analysis of 316L austenitic stainless steel produced by laser powder bed fusion. Materials Letters 372, 136978 (2024); https://doi.org/10.1016/j.matlet.2024.136978.
Abstract
Ultra-rapid cooling of laser powder bed fusion (LPBF) generates a cellular solidification microstructure with submicron-sized periodicity accompanied by non-negligible segregation. In 316L austenitic stainless steel, an important corrosion-resistant alloy, the effect of segregation, particularly variations in Cr concentration, on the corrosion resistance of the LPBF product is unknown. Local valence analysis of the LPBF-produced 316L by electron energy-loss spectroscopy revealed no obvious changes in the energy-loss near-edge structures of Cr and Fe measured within the solidification cellular microstructure, at the cell boundary, or at the melt-pool boundary. This result indicates that solidification segregation in the LPBF-produced 316L is unlikely to affect the corrosion resistance of the material.
Publisher
Elsevier B.V.
Source Title
Materials Letters
Volume (Issue)
372
Page
136978
Date of Issued
2024-10-01
Language
English
Handle URL
https://hdl.handle.net/11094/97368
PISSN
0167577X
eISSN
18734979
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.matlet.2024.136978
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article