Application of atmospheric-pressure plasma treatment to coat Ti-alloy orthodontic wire with white oxide layer

Mitsuishi, Naho; Miura-Fujiwara, Eri; Yamada, Motoko; Chiba, Takahiro; Sato, Hisashi; Watanabe, Yoshihiko; Ito, Masako; Takashima, Seigo; Nakai, Masaaki; Akahori, Toshikazu; Tanaka, Masaki; Niinomi, Mitsuo; Takeuchi, Tsutomu

doi:10.7567/1347-4065/ab43a9

Cited by 3 publications

(2 citation statements)

References 32 publications

(33 reference statements)

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“…Because the SP can induce compressive residual stress around the peened surface, the SP is usually applied to improve the fatigue strength and the corrosion resistance of the metallic materials [1][2][3][4]. Furthermore, when the SP is subjected to the metallic materials, the grains around the peened surface are highly refined and the surface hardness is considerably increased [5][6][7][8][9][10]. This is because that the SP can introduce large strain on the peened surface.…”

Section: Introductionmentioning

confidence: 99%

Crystallographic Textures of Al and Al-Mg Alloy Formed by Shot-Peening

Sato,

Mihara-Narita,

Watanabe

et al. 2023

MSF

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Shot-peening (SP) is one of the severe surface plastic deformation (SSPD) processing techniques. Due to large plastic strain by the SP, the SP for metallic materials forms crystallographic texture on the peened surface. Since the crystallographic texture formed by the SP depends on the dislocation slip, it can be expected that this texture is affected by stacking fault energy (SFE) of the materials. However, effects of the SFE on the crystallographic texture formed on the peened surface by the SP is not clear. In this study, crystallographic textures of pure Al (higher SFE) and Al-10 mass%Mg alloy (lower SFE) formed by the SP are investigated. When the pure Al is SPed, {001}+{111} double fiber texture with the <001> and <111> directions parallel to the plane normal direction of the peened surface is obtained. On the other hand, in the case of Al-10 mass%Mg alloy with the SFE close to the pure Cu, {110} fiber texture is formed as well as the pure Cu. Therefore, it is found that the crystallographic texture formed by the SP is influenced by the SFE.

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Section: Introductionmentioning

confidence: 99%

Crystallographic Textures of Al and Al-Mg Alloy Formed by Shot-Peening

Sato,

Mihara-Narita,

Watanabe

et al. 2023

MSF

Self Cite

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“…Shot-peening can improve fatigue property of metallic materials by inducing residual compressive stress [1][2][3][4][5][6][7]. In addition, since the shot-peening gives large strain around peened surface, microstructure around the peened surface is severely refined and consequently the surface hardness is drastically increased [8][9][10][11][12]. Therefore, it is well known that the shot-peening is surface severe plastic deformation (SPD) processing which can induce residual compressive stress.…”

Section: Introductionmentioning

confidence: 99%

Effects of Peening Direction on Reverse Transformation Induced by Shot-Peening for Fe-33%Ni Alloy

Sato

Tominaga

Chiba

et al. 2021

MSF

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Effects of peening direction on the reverse transformation induced by the shot-peening for the Fe-33 mass%Ni alloy with large amount of martensite (α’) are investigated. When the angle between the peened surface and the peening direction (Hereafter, peening angle) is 90 o, the reverse transformation occurs and subsequently martensitic transformation is induced by the shot-peening. On the other hand, in case of the peening angle of 30 o, only reverse transformation occurs. Furthermore, the volume fraction of austenite (γ) in the specimen after the shot-peening increases as the peening angle decreases. This means that the reverse transformation induced by the shot-peening is enhanced by decreasing the peening angle. Moreover, residual compressive stress around the peened surface increases as the peening angle decreases. Since the hydrostatic compressive stress decreases phase transformation temperature, the phase transformation temperature around the peened surface would be decreased by the shot-peening. Therefore, the reverse transformation behavior depending on the peening angle can be explained by the residual compressive stress due to the shot-peening.

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