Dynamic recrystallization of Fe-Cr alloys by atmospheric-controlled induction-heating fine particle peening

Shoichi Kikuchi; Ikko Tanaka; Shogo Takesue; Jun Komotori; Keishi Matsumoto

doi:10.1016/j.surfcoat.2018.03.030

Dynamic recrystallization of Fe-Cr alloys by atmospheric-controlled induction-heating fine particle peening

Shoichi Kikuchi, Ikko Tanaka, Shogo Takesue, Jun Komotori, Keishi Matsumoto

Department of Mechanical Engineering

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

1 Citation (Scopus)

Abstract

Atmospheric-controlled induction-heating fine particle peening (AIH-FPP) was conducted in a N₂ atmosphere to form ultrafine grains on the surface of Fe-Cr alloys. The surface microstructure of Fe-2%Cr alloy and Fe-10%Cr alloy treated with AIH-FPP at 973 K and 1073 K was characterized using optical microscopy, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). AIH-FPP can be used as a thermomechanical process to form ultrafine grains on the surface of Fe-Cr alloys because strain is induced by AIH-FPP at a high rate and high temperature during dynamic recrystallization. In particular, the grain size of Fe-Cr alloys tends to decrease with increasing AIH-FPP treatment time. This is attributed to the increase in the strain induced by AIH-FPP with increasing AIH-FPP treatment time during dynamic recrystallization. Thus, the AIH-FPP-induced stratification structure composed of fine grains becomes more pronounced with increasing treatment time. Furthermore, the AIH-FPP treatment temperature at which fine grains are formed depends on the Cr concentration of the Fe-Cr alloys.

Original language	English
Pages (from-to)	410-417
Number of pages	8
Journal	Surface and Coatings Technology
Volume	344
DOIs	https://doi.org/10.1016/j.surfcoat.2018.03.030
Publication status	Published - 2018 Jun 25

Keywords

Dynamic recrystallization
Grain refinement
Peening
Thermomechanical processing

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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title = "Dynamic recrystallization of Fe-Cr alloys by atmospheric-controlled induction-heating fine particle peening",

abstract = "Atmospheric-controlled induction-heating fine particle peening (AIH-FPP) was conducted in a N2 atmosphere to form ultrafine grains on the surface of Fe-Cr alloys. The surface microstructure of Fe-2%Cr alloy and Fe-10%Cr alloy treated with AIH-FPP at 973 K and 1073 K was characterized using optical microscopy, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). AIH-FPP can be used as a thermomechanical process to form ultrafine grains on the surface of Fe-Cr alloys because strain is induced by AIH-FPP at a high rate and high temperature during dynamic recrystallization. In particular, the grain size of Fe-Cr alloys tends to decrease with increasing AIH-FPP treatment time. This is attributed to the increase in the strain induced by AIH-FPP with increasing AIH-FPP treatment time during dynamic recrystallization. Thus, the AIH-FPP-induced stratification structure composed of fine grains becomes more pronounced with increasing treatment time. Furthermore, the AIH-FPP treatment temperature at which fine grains are formed depends on the Cr concentration of the Fe-Cr alloys.",

keywords = "Dynamic recrystallization, Grain refinement, Peening, Thermomechanical processing",

author = "Shoichi Kikuchi and Ikko Tanaka and Shogo Takesue and Jun Komotori and Keishi Matsumoto",

year = "2018",

month = jun,

day = "25",

doi = "10.1016/j.surfcoat.2018.03.030",

language = "English",

volume = "344",

pages = "410--417",

journal = "Surface and Coatings Technology",

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T1 - Dynamic recrystallization of Fe-Cr alloys by atmospheric-controlled induction-heating fine particle peening

AU - Kikuchi, Shoichi

AU - Tanaka, Ikko

AU - Takesue, Shogo

AU - Komotori, Jun

AU - Matsumoto, Keishi

PY - 2018/6/25

Y1 - 2018/6/25

N2 - Atmospheric-controlled induction-heating fine particle peening (AIH-FPP) was conducted in a N2 atmosphere to form ultrafine grains on the surface of Fe-Cr alloys. The surface microstructure of Fe-2%Cr alloy and Fe-10%Cr alloy treated with AIH-FPP at 973 K and 1073 K was characterized using optical microscopy, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). AIH-FPP can be used as a thermomechanical process to form ultrafine grains on the surface of Fe-Cr alloys because strain is induced by AIH-FPP at a high rate and high temperature during dynamic recrystallization. In particular, the grain size of Fe-Cr alloys tends to decrease with increasing AIH-FPP treatment time. This is attributed to the increase in the strain induced by AIH-FPP with increasing AIH-FPP treatment time during dynamic recrystallization. Thus, the AIH-FPP-induced stratification structure composed of fine grains becomes more pronounced with increasing treatment time. Furthermore, the AIH-FPP treatment temperature at which fine grains are formed depends on the Cr concentration of the Fe-Cr alloys.

AB - Atmospheric-controlled induction-heating fine particle peening (AIH-FPP) was conducted in a N2 atmosphere to form ultrafine grains on the surface of Fe-Cr alloys. The surface microstructure of Fe-2%Cr alloy and Fe-10%Cr alloy treated with AIH-FPP at 973 K and 1073 K was characterized using optical microscopy, scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). AIH-FPP can be used as a thermomechanical process to form ultrafine grains on the surface of Fe-Cr alloys because strain is induced by AIH-FPP at a high rate and high temperature during dynamic recrystallization. In particular, the grain size of Fe-Cr alloys tends to decrease with increasing AIH-FPP treatment time. This is attributed to the increase in the strain induced by AIH-FPP with increasing AIH-FPP treatment time during dynamic recrystallization. Thus, the AIH-FPP-induced stratification structure composed of fine grains becomes more pronounced with increasing treatment time. Furthermore, the AIH-FPP treatment temperature at which fine grains are formed depends on the Cr concentration of the Fe-Cr alloys.

KW - Dynamic recrystallization

KW - Grain refinement

KW - Peening

KW - Thermomechanical processing

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