Excellent mechanical and corrosion properties of austenitic stainless steel with a unique crystallographic lamellar microstructure via selective laser melting

Shi Hai Sun; Takuya Ishimoto; Koji Hagihara; Yusuke Tsutsumi; Takao Hanawa; Takayoshi Nakano

doi:10.1016/j.scriptamat.2018.09.017

Excellent mechanical and corrosion properties of austenitic stainless steel with a unique crystallographic lamellar microstructure via selective laser melting

Shi Hai Sun, Takuya Ishimoto, Koji Hagihara, Yusuke Tsutsumi, Takao Hanawa, Takayoshi Nakano^*

^*この論文の責任著者

先進軽金属材料国際研究機構先進アルミニウム国際研究センター

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

296 被引用数 (Scopus)

抄録

We first developed a unique “crystallographic lamellar microstructure” (CLM), in which two differently oriented grains appear alternately, in a 316L stainless steel specimen via selective laser melting technology. The CLM was composed of major 〈011〉 grains and minor 〈001〉 grains aligned along the build direction, which stemmed from vertical and approximately ±45° inclined columnar cells formed in the central and side parts of melt-pools, respectively. The development of CLM was found to largely improve the material properties via the strengthening of the product, simultaneously showing superior corrosion resistance to commercially obtained specimens.

本文言語	英語
ページ（範囲）	89-93
ページ数	5
ジャーナル	Scripta Materialia
巻	159
DOI	https://doi.org/10.1016/j.scriptamat.2018.09.017
出版ステータス	出版済み - 2019/01/15

ASJC Scopus 主題領域

材料科学一般
凝縮系物理学
材料力学
機械工学
金属および合金

文献へのアクセス

10.1016/j.scriptamat.2018.09.017

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引用スタイル

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abstract = "We first developed a unique “crystallographic lamellar microstructure” (CLM), in which two differently oriented grains appear alternately, in a 316L stainless steel specimen via selective laser melting technology. The CLM was composed of major 〈011〉 grains and minor 〈001〉 grains aligned along the build direction, which stemmed from vertical and approximately ±45° inclined columnar cells formed in the central and side parts of melt-pools, respectively. The development of CLM was found to largely improve the material properties via the strengthening of the product, simultaneously showing superior corrosion resistance to commercially obtained specimens.",

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AU - Sun, Shi Hai

AU - Ishimoto, Takuya

AU - Hagihara, Koji

AU - Tsutsumi, Yusuke

AU - Hanawa, Takao

AU - Nakano, Takayoshi

PY - 2019/1/15

Y1 - 2019/1/15

N2 - We first developed a unique “crystallographic lamellar microstructure” (CLM), in which two differently oriented grains appear alternately, in a 316L stainless steel specimen via selective laser melting technology. The CLM was composed of major 〈011〉 grains and minor 〈001〉 grains aligned along the build direction, which stemmed from vertical and approximately ±45° inclined columnar cells formed in the central and side parts of melt-pools, respectively. The development of CLM was found to largely improve the material properties via the strengthening of the product, simultaneously showing superior corrosion resistance to commercially obtained specimens.

AB - We first developed a unique “crystallographic lamellar microstructure” (CLM), in which two differently oriented grains appear alternately, in a 316L stainless steel specimen via selective laser melting technology. The CLM was composed of major 〈011〉 grains and minor 〈001〉 grains aligned along the build direction, which stemmed from vertical and approximately ±45° inclined columnar cells formed in the central and side parts of melt-pools, respectively. The development of CLM was found to largely improve the material properties via the strengthening of the product, simultaneously showing superior corrosion resistance to commercially obtained specimens.

KW - 316L stainless steel

KW - Additive manufacturing

KW - Lamellae

KW - Selective laser melting

KW - Texture

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