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

Kazuhisa Sato; Shunya Takagi; Satoshi Ichikawa; Takuya Ishimoto; Takayoshi Nakano

doi:10.1016/j.matlet.2024.136978

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

Kazuhisa Sato^*, Shunya Takagi, Satoshi Ichikawa, Takuya Ishimoto, Takayoshi Nakano

^*Corresponding author for this work

Center for Aluminum and advanced Materials Research and International Collaboration, Institute of Light Metals

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

1 Scopus citations

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.

Original language	English
Article number	136978
Journal	Materials Letters
Volume	372
DOIs	https://doi.org/10.1016/j.matlet.2024.136978
State	Published - 2024/10/01

Keywords

316L stainless steel
Additive manufacturing
Corrosion resistance
Electron energy-loss spectroscopy
Laser powder bed fusion

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matlet.2024.136978

Cite this

@article{1088df79002b458893259dc3b752f686,

title = "Local valence analysis of 316L austenitic stainless steel produced by laser powder bed fusion",

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.",

keywords = "316L stainless steel, Additive manufacturing, Corrosion resistance, Electron energy-loss spectroscopy, Laser powder bed fusion",

author = "Kazuhisa Sato and Shunya Takagi and Satoshi Ichikawa and Takuya Ishimoto and Takayoshi Nakano",

note = "Publisher Copyright: {\textcopyright} 2024 The Author(s)",

year = "2024",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2024.136978",

language = "英語",

volume = "372",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Local valence analysis of 316L austenitic stainless steel produced by laser powder bed fusion

AU - Sato, Kazuhisa

AU - Takagi, Shunya

AU - Ichikawa, Satoshi

AU - Ishimoto, Takuya

AU - Nakano, Takayoshi

PY - 2024/10/1

Y1 - 2024/10/1

N2 - 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.

AB - 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.

KW - 316L stainless steel

KW - Additive manufacturing

KW - Corrosion resistance

KW - Electron energy-loss spectroscopy

KW - Laser powder bed fusion

UR - http://www.scopus.com/inward/record.url?scp=85197782602&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2024.136978

DO - 10.1016/j.matlet.2024.136978

M3 - 学術論文

AN - SCOPUS:85197782602

SN - 0167-577X

VL - 372

JO - Materials Letters

JF - Materials Letters

M1 - 136978

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this