(Fe,Mn)3AlCx κ-carbide formation and characterization in pack aluminization of Fe–29Mn–9Al–0.9C lightweight steel

Lou, Bih-Show; Chen, Yen‐Yu; Wu, Zih-You; Kuo, Yu-Chu; Duh, Jenq‐Gong; Lee, Jyh-Wei

doi:10.1016/j.jmrt.2022.07.179

Cited by 3 publications

(1 citation statement)

References 57 publications

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“…耐摩耗性を有すると予想される。鋼の表面処理として、Al 粉末パック法により Fe-Mn-Al-C 鋼上に (Fe,Mn)3AlC が形成することは、Lou らの研究で報告されているが19) 、彼らの報告では、形成した膜は不連続であり、これまでに粉末パック法による Fe 基合金表面への連続的な Al 炭化物層の形成を検討した報告は見られない。この理由として、1000℃の γ-Fe 中には Al は約 15 at.%固溶する 20) ことや、C もまた γ-Fe 中にかなり固溶する(約 9 at.％)ことから、炭素鋼が γ 相となる処理温度域では Al 粉末パック法により表面に連続層を形成するために充分な量の炭化物を生成させることが難しいことが考えられる。本研究では鋼表面上へ Al を含む炭化物層の形成を目指し、炭素量の異なる鋼上への Al 粉末パック法による Al 系炭化物の形成挙動を調査した。2. 実験方法本研究では Fe-0.1C, Fe-0.7C,および Fe-1.2C (in wt.%)合金を用いた。Fe(99.9%)及びグラファイト(99.9%)を出発原料として Ar-アーク溶解法でこれらの合金インゴットを溶製した。これらの…”

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Al粉末パック法を用いた炭素鋼上へのアルミニウムを含む炭化物膜の形成とそのメカニズム

Fujisaki,

Hayashi,

Yoneda

2024

Tetsu-to-Hagane

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The effect of C content in steels on the formation of an Al-containing carbide layer by an Al pack method at 980℃ was investigated. The continuous layer consisting of an outer β-FeAl and inner Fe3AlC layers was formed on Fe-1.2C (in wt.%) by a short process time. An α-Fe(Al) layer with Fe3AlC precipitates was formed below the β-FeAl layer on Fe-0.7C after 16h of process, thereafter an Fe3AlC layer was formed between the β-FeAl and α-Fe(Al) + Fe3AlC layers after 25h. The β-FeAl and α-Fe(Al)+ Fe3AlC layers were formed on Fe-0.1C, but a continuous Fe3AlC layer was not developed after longer treatment.A continuous Fe3AlC layer formed by an Al pack method was explained by carbon enrichment at the α-Fe(Al)/γ-Fe(C) interface due to an inward growth of the α-Fe(Al) layer.

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Al粉末パック法を用いた炭素鋼上へのアルミニウムを含む炭化物膜の形成とそのメカニズム

Fujisaki,

Hayashi,

Yoneda

2024

Tetsu-to-Hagane

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Introducing both chemical and structural gradients in AISI 321 stainless steel via aluminizing and laser shock peening for superior properties

Yu,

Jiang,

et al. 2023

Surface and Coatings Technology

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Formation and Evolution of Interfacial Structure in Al–Si–Mg/Stainless Steel Bimetals during Hot-Dipping Process

Kim,

Lim,

Kayani

et al. 2024

Crystals

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Understanding trends in the formation of the intermetallic compound (IMC) layer in Al/Fe bimetallic composites can aid in significantly improving their mechanical properties. However, it is currently challenging to predict IMC layer formation during hot-dip aluminizing. Furthermore, the results from previous studies are difficult to compare owing to the variation in the process parameters used. Therefore, to understand how temperatures and holding times affect the thickness and hardness properties of IMC layers, we investigated the interfacial properties of aluminized stainless steel in molten Al-Si-Mg. AISI 420 stainless steel was hot-dip aluminized in an Al–Si–Mg alloy melt for 10–120 min at four different temperatures: 700, 750, 800, and 850 °C. Morphology, type, and element distribution of the phases formed in the reaction layer and the reduction rate of the aluminizing process were studied. Notably, while the reaction layer thickness increased with increasing aluminizing temperature when the holding time was low, long-term reaction caused the reaction layer to become thicker at lower temperatures. The mechanism of this morphological transformation is discussed. The results demonstrated effective trends in controlling the morphology of the intermetallic compound layer with respect to various hot-dip Al plating process parameters.

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(Fe,Mn)3AlCx κ-carbide formation and characterization in pack aluminization of Fe–29Mn–9Al–0.9C lightweight steel

Cited by 3 publications

References 57 publications

Al粉末パック法を用いた炭素鋼上へのアルミニウムを含む炭化物膜の形成とそのメカニズム

Al粉末パック法を用いた炭素鋼上へのアルミニウムを含む炭化物膜の形成とそのメカニズム

Introducing both chemical and structural gradients in AISI 321 stainless steel via aluminizing and laser shock peening for superior properties

Formation and Evolution of Interfacial Structure in Al–Si–Mg/Stainless Steel Bimetals during Hot-Dipping Process

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