純チタン薄板における微視的な不均一変形が表面あれに及ぼす影響に関する結晶塑性有限要素解析

Translated title of the contribution: Crystal plasticity finite element analysis of effects of microscopic non-uniform deformation on surface roughness of pure titanium sheet

Takeshi Uemori, Hiroki Kakihara, Naoya Tada

Research output: Contribution to journalArticle

Abstract

Pure titanium has been widely used as one of the primary metals in aerospace and biomedical fields for the last few decades, since the strong demands for the light weighted and strong materials have been increasing in the fields. Despite the great enhancements, pure titanium is still one of the difficult materials to predict the deformation behaviors. To study the effects of complicated microscopic non-uniform deformations on the surface roughness, a uniaxial tensile deformation of poly-crystalline pure titanium sheet by finite element analysis based on the crystal plasticity theory was conducted in the present work. It was found that the microscopic deformations around 0.2% strain range decided the surface roughness and the approximate surface’s shapes of the present material. In other words, the surface roughness of the pure titanium was determined by the deformation at the small macroscopic strain around 0.2%, rather than, that at the macroscopic larger strain. The subsequent deformation after 0.2% strain could only rescale the size of the surface roughness without any further changes in the shape of surface roughness.

Original languageJapanese
Pages (from-to)478-484
Number of pages7
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume68
Issue number6
DOIs
Publication statusPublished - Jan 1 2019

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Titanium sheet
plastic properties
Plasticity
surface roughness
titanium
Surface roughness
Finite element method
Crystals
Titanium
crystals
tensile deformation
Metals
augmentation
Crystalline materials
metals

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "純チタン薄板における微視的な不均一変形が表面あれに及ぼす影響に関する結晶塑性有限要素解析",
abstract = "Pure titanium has been widely used as one of the primary metals in aerospace and biomedical fields for the last few decades, since the strong demands for the light weighted and strong materials have been increasing in the fields. Despite the great enhancements, pure titanium is still one of the difficult materials to predict the deformation behaviors. To study the effects of complicated microscopic non-uniform deformations on the surface roughness, a uniaxial tensile deformation of poly-crystalline pure titanium sheet by finite element analysis based on the crystal plasticity theory was conducted in the present work. It was found that the microscopic deformations around 0.2{\%} strain range decided the surface roughness and the approximate surface’s shapes of the present material. In other words, the surface roughness of the pure titanium was determined by the deformation at the small macroscopic strain around 0.2{\%}, rather than, that at the macroscopic larger strain. The subsequent deformation after 0.2{\%} strain could only rescale the size of the surface roughness without any further changes in the shape of surface roughness.",
keywords = "Finite element analysis, Microscopic non-uniform deformations, Pure titanium, Surface roughness",
author = "Takeshi Uemori and Hiroki Kakihara and Naoya Tada",
year = "2019",
month = "1",
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doi = "10.2472/jsms.68.478",
language = "Japanese",
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T1 - 純チタン薄板における微視的な不均一変形が表面あれに及ぼす影響に関する結晶塑性有限要素解析

AU - Uemori, Takeshi

AU - Kakihara, Hiroki

AU - Tada, Naoya

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Pure titanium has been widely used as one of the primary metals in aerospace and biomedical fields for the last few decades, since the strong demands for the light weighted and strong materials have been increasing in the fields. Despite the great enhancements, pure titanium is still one of the difficult materials to predict the deformation behaviors. To study the effects of complicated microscopic non-uniform deformations on the surface roughness, a uniaxial tensile deformation of poly-crystalline pure titanium sheet by finite element analysis based on the crystal plasticity theory was conducted in the present work. It was found that the microscopic deformations around 0.2% strain range decided the surface roughness and the approximate surface’s shapes of the present material. In other words, the surface roughness of the pure titanium was determined by the deformation at the small macroscopic strain around 0.2%, rather than, that at the macroscopic larger strain. The subsequent deformation after 0.2% strain could only rescale the size of the surface roughness without any further changes in the shape of surface roughness.

AB - Pure titanium has been widely used as one of the primary metals in aerospace and biomedical fields for the last few decades, since the strong demands for the light weighted and strong materials have been increasing in the fields. Despite the great enhancements, pure titanium is still one of the difficult materials to predict the deformation behaviors. To study the effects of complicated microscopic non-uniform deformations on the surface roughness, a uniaxial tensile deformation of poly-crystalline pure titanium sheet by finite element analysis based on the crystal plasticity theory was conducted in the present work. It was found that the microscopic deformations around 0.2% strain range decided the surface roughness and the approximate surface’s shapes of the present material. In other words, the surface roughness of the pure titanium was determined by the deformation at the small macroscopic strain around 0.2%, rather than, that at the macroscopic larger strain. The subsequent deformation after 0.2% strain could only rescale the size of the surface roughness without any further changes in the shape of surface roughness.

KW - Finite element analysis

KW - Microscopic non-uniform deformations

KW - Pure titanium

KW - Surface roughness

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