Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests

Ryuta Kasada; Satoshi Konishi; Dai Hamaguchi; Masami Ando; Hiroyasu Tanigawa

doi:10.1016/j.fusengdes.2015.11.041

Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests

Ryuta Kasada, Satoshi Konishi, Dai Hamaguchi, Masami Ando, Hiroyasu Tanigawa

IMR - Materials Design Division

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

13 Citations (Scopus)

Abstract

The present study investigated strain-rate sensitivity (SRS) of a single crystal Fe–15Cr–20Ni austenitic steel before and after 10.5 MeV Fe³⁺ ion-irradiation up to 10 dpa at 300 °C using a strain-rate jump (SRJ) nanoindentation test. It was found that the SRJ nanoindentation test is suitable for evaluating the SRS at strain-rates from 0.001 to 0.2 s⁻¹. Indentation size effect was observed for depth dependence of nanoindentation hardness but not the SRS. The ion-irradiation increased the hardness at the shallow depth region but decreased the SRS slightly.

Original language	English
Pages (from-to)	1507-1510
Number of pages	4
Journal	Fusion Engineering and Design
Volume	109-111
DOIs	https://doi.org/10.1016/j.fusengdes.2015.11.041
Publication status	Published - 2016

Keywords

Ion irradiation
Irradiation hardening
Nanoindentation
Strain rate
Structural material

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10.1016/j.fusengdes.2015.11.041

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title = "Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests",

abstract = "The present study investigated strain-rate sensitivity (SRS) of a single crystal Fe–15Cr–20Ni austenitic steel before and after 10.5 MeV Fe3+ ion-irradiation up to 10 dpa at 300 °C using a strain-rate jump (SRJ) nanoindentation test. It was found that the SRJ nanoindentation test is suitable for evaluating the SRS at strain-rates from 0.001 to 0.2 s−1. Indentation size effect was observed for depth dependence of nanoindentation hardness but not the SRS. The ion-irradiation increased the hardness at the shallow depth region but decreased the SRS slightly.",

keywords = "Ion irradiation, Irradiation hardening, Nanoindentation, Strain rate, Structural material",

author = "Ryuta Kasada and Satoshi Konishi and Dai Hamaguchi and Masami Ando and Hiroyasu Tanigawa",

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year = "2016",

doi = "10.1016/j.fusengdes.2015.11.041",

language = "English",

volume = "109-111",

pages = "1507--1510",

journal = "Fusion Engineering and Design",

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TY - JOUR

T1 - Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests

AU - Kasada, Ryuta

AU - Konishi, Satoshi

AU - Hamaguchi, Dai

AU - Ando, Masami

AU - Tanigawa, Hiroyasu

PY - 2016

Y1 - 2016

N2 - The present study investigated strain-rate sensitivity (SRS) of a single crystal Fe–15Cr–20Ni austenitic steel before and after 10.5 MeV Fe3+ ion-irradiation up to 10 dpa at 300 °C using a strain-rate jump (SRJ) nanoindentation test. It was found that the SRJ nanoindentation test is suitable for evaluating the SRS at strain-rates from 0.001 to 0.2 s−1. Indentation size effect was observed for depth dependence of nanoindentation hardness but not the SRS. The ion-irradiation increased the hardness at the shallow depth region but decreased the SRS slightly.

AB - The present study investigated strain-rate sensitivity (SRS) of a single crystal Fe–15Cr–20Ni austenitic steel before and after 10.5 MeV Fe3+ ion-irradiation up to 10 dpa at 300 °C using a strain-rate jump (SRJ) nanoindentation test. It was found that the SRJ nanoindentation test is suitable for evaluating the SRS at strain-rates from 0.001 to 0.2 s−1. Indentation size effect was observed for depth dependence of nanoindentation hardness but not the SRS. The ion-irradiation increased the hardness at the shallow depth region but decreased the SRS slightly.

KW - Ion irradiation

KW - Irradiation hardening

KW - Nanoindentation

KW - Strain rate

KW - Structural material

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DO - 10.1016/j.fusengdes.2015.11.041

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SN - 0920-3796

VL - 109-111

SP - 1507

EP - 1510

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

ER -

Evaluation of strain-rate sensitivity of ion-irradiated austenitic steel using strain-rate jump nanoindentation tests

Abstract

Keywords

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