Formation of nitrided layer using atmospheric-controlled IH-FPP and its effect on the fatigue properties of Ti-6Al-4V alloy under four-point bending

S. Kikuchi, S. Ota, H. Akebono, Masaki Omiya, Jun Komotori, A. Sugeta, Y. Nakai

研究成果: Article

7 引用 (Scopus)

抄録

The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.

元の言語English
ページ(範囲)3432-3438
ページ数7
ジャーナルProcedia Structural Integrity
2
DOI
出版物ステータスPublished - 2016 1 1

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Shot peening
Induction heating
Fatigue of materials
Nitrogen
Nitrogen Compounds
Nitrogen compounds
Nitriding
Titanium alloys
Surface treatment
Gases
Hardness
titanium alloy (TiAl6V4)
Oxygen
Microstructure
Air
Temperature

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Civil and Structural Engineering
  • Materials Science(all)

これを引用

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title = "Formation of nitrided layer using atmospheric-controlled IH-FPP and its effect on the fatigue properties of Ti-6Al-4V alloy under four-point bending",
abstract = "The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.",
keywords = "Fatigue, Four-point bending, Induction heating, Nitriding, Surface modification, Titanium alloy",
author = "S. Kikuchi and S. Ota and H. Akebono and Masaki Omiya and Jun Komotori and A. Sugeta and Y. Nakai",
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T1 - Formation of nitrided layer using atmospheric-controlled IH-FPP and its effect on the fatigue properties of Ti-6Al-4V alloy under four-point bending

AU - Kikuchi, S.

AU - Ota, S.

AU - Akebono, H.

AU - Omiya, Masaki

AU - Komotori, Jun

AU - Sugeta, A.

AU - Nakai, Y.

PY - 2016/1/1

Y1 - 2016/1/1

N2 - The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.

AB - The purpose of this study is to develop a rapid nitriding using a surface modification which is a combination of atmospheric-controlled induction-heating fine particle peening (AIH-FPP) and nitrogen gas blow. AIH-FPP was performed for titanium alloy (Ti-6Al-4V ELI grade) at 1173 K for 180 s in a controlled nitrogen atmosphere with an oxygen concentration less than 10 ppm without supplying particles. A nitrogen compound (TiN) was formed on the AIH-FPP treated surface, which results in increasing the surface hardness of Ti-6Al-4V alloy. To examine the effect of AIH-FPP on the fatigue properties of Ti-6Al-4V alloy, four-point bending fatigue tests were performed at a stress ratio of 0.1 in air at room temperature. It was found that the AIH-FPP treated specimens showed low fatigue limit due to the formation of a brittle compound layer and coarse microstructure.

KW - Fatigue

KW - Four-point bending

KW - Induction heating

KW - Nitriding

KW - Surface modification

KW - Titanium alloy

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