Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors

Makoto Fukuda; Tsunenori Tabata; Akira Hasegawa; Shuhei Nogami; Takeo Muroga

doi:10.1016/j.fusengdes.2015.10.032

Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors

Makoto Fukuda, Tsunenori Tabata, Akira Hasegawa, Shuhei Nogami, Takeo Muroga

ENG - Quantum Science and Energy Engineering

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

22 Citations (Scopus)

Abstract

The strain rate dependence of tensile properties such as yield stress and fracture strain of W-3%Re and K-doped W-3%Re plates in the temperature range from room temperature (RT) to 300 °C was investigated in this work. The examined W alloy plates were fabricated by the same process and with the same reduction ratios. The yield stress of W-3%Re changed significantly with increasing strain rate as compared to K-doped W-3%Re. The strain rate sensitivity of W-3%Re was decreased by K-bubble dispersion. The low-temperature strength and ductility of W-3%Re was improved by K-bubble dispersion, although the fracture strain of K-doped W-3%Re was lower than that of W-3%Re at 200 and 300 °C.

Original language	English
Pages (from-to)	1674-1677
Number of pages	4
Journal	Fusion Engineering and Design
Volume	109-111
DOIs	https://doi.org/10.1016/j.fusengdes.2015.10.032
Publication status	Published - 2016

Keywords

Potassium bubble dispersion
Rhenium addition
Strain rate dependence
Tensile property
Tungsten

ASJC Scopus subject areas

Civil and Structural Engineering
Nuclear Energy and Engineering
Materials Science(all)
Mechanical Engineering

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10.1016/j.fusengdes.2015.10.032

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title = "Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors",

abstract = "The strain rate dependence of tensile properties such as yield stress and fracture strain of W-3%Re and K-doped W-3%Re plates in the temperature range from room temperature (RT) to 300 °C was investigated in this work. The examined W alloy plates were fabricated by the same process and with the same reduction ratios. The yield stress of W-3%Re changed significantly with increasing strain rate as compared to K-doped W-3%Re. The strain rate sensitivity of W-3%Re was decreased by K-bubble dispersion. The low-temperature strength and ductility of W-3%Re was improved by K-bubble dispersion, although the fracture strain of K-doped W-3%Re was lower than that of W-3%Re at 200 and 300 °C.",

keywords = "Potassium bubble dispersion, Rhenium addition, Strain rate dependence, Tensile property, Tungsten",

author = "Makoto Fukuda and Tsunenori Tabata and Akira Hasegawa and Shuhei Nogami and Takeo Muroga",

note = "Funding Information: This work was supported by JSPS KAKENHI , Grant Number 24246151 , and by the NIFS Collaborative Research Program ( NIFS11KOBF019 ). Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

doi = "10.1016/j.fusengdes.2015.10.032",

language = "English",

volume = "109-111",

pages = "1674--1677",

journal = "Fusion Engineering and Design",

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publisher = "Elsevier BV",

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TY - JOUR

T1 - Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors

AU - Fukuda, Makoto

AU - Tabata, Tsunenori

AU - Hasegawa, Akira

AU - Nogami, Shuhei

AU - Muroga, Takeo

PY - 2016

Y1 - 2016

N2 - The strain rate dependence of tensile properties such as yield stress and fracture strain of W-3%Re and K-doped W-3%Re plates in the temperature range from room temperature (RT) to 300 °C was investigated in this work. The examined W alloy plates were fabricated by the same process and with the same reduction ratios. The yield stress of W-3%Re changed significantly with increasing strain rate as compared to K-doped W-3%Re. The strain rate sensitivity of W-3%Re was decreased by K-bubble dispersion. The low-temperature strength and ductility of W-3%Re was improved by K-bubble dispersion, although the fracture strain of K-doped W-3%Re was lower than that of W-3%Re at 200 and 300 °C.

AB - The strain rate dependence of tensile properties such as yield stress and fracture strain of W-3%Re and K-doped W-3%Re plates in the temperature range from room temperature (RT) to 300 °C was investigated in this work. The examined W alloy plates were fabricated by the same process and with the same reduction ratios. The yield stress of W-3%Re changed significantly with increasing strain rate as compared to K-doped W-3%Re. The strain rate sensitivity of W-3%Re was decreased by K-bubble dispersion. The low-temperature strength and ductility of W-3%Re was improved by K-bubble dispersion, although the fracture strain of K-doped W-3%Re was lower than that of W-3%Re at 200 and 300 °C.

KW - Potassium bubble dispersion

KW - Rhenium addition

KW - Strain rate dependence

KW - Tensile property

KW - Tungsten

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U2 - 10.1016/j.fusengdes.2015.10.032

DO - 10.1016/j.fusengdes.2015.10.032

M3 - Article

AN - SCOPUS:84949034160

SN - 0920-3796

VL - 109-111

SP - 1674

EP - 1677

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors

Abstract

Keywords

ASJC Scopus subject areas

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