TY - JOUR
T1 - Statistical approach for understanding the effect of specimen size on the yield stress and its scattering in mechanically-alloyed Cu and ODS-Cu obtained by micro-pillar compression test
AU - Liu, Yuchen
AU - Kondo, Sosuke
AU - Yu, Hao
AU - Yabuuchi, Kiyohiro
AU - Kasada, Ryuta
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers 16H02443 and 19H02643. And, the authors wish to thank Mr. Can Zhao of Institute for Materials Research, Tohoku University, for the cooperation in programing of the Monte Carlo simulation.
Publisher Copyright:
© 2020 The Japan Institute of Metals and Materials.
PY - 2020
Y1 - 2020
N2 - Oxide Dispersion Strengthening copper (ODS-Cu) alloy has high strength, high thermal conductivity and superior irradiation resistance which are needed for fusion reactor divertor components. In this study, specimen size dependence of the yield stress in Cu and ODS-Cu which were made by mechanical alloying and hot pressing was investigated by micro-pillar compression test. The distributions of yield stress values were different between the sizes, 1, 3 and 5 µm cubic micro-pillars, which can be explained by the inhomogeneous spatial distributions of both the crystallographic grain in matrix and oxide-particles.
AB - Oxide Dispersion Strengthening copper (ODS-Cu) alloy has high strength, high thermal conductivity and superior irradiation resistance which are needed for fusion reactor divertor components. In this study, specimen size dependence of the yield stress in Cu and ODS-Cu which were made by mechanical alloying and hot pressing was investigated by micro-pillar compression test. The distributions of yield stress values were different between the sizes, 1, 3 and 5 µm cubic micro-pillars, which can be explained by the inhomogeneous spatial distributions of both the crystallographic grain in matrix and oxide-particles.
KW - Mechanical properties
KW - Micro-pillar compression
KW - Monte Carlo method
KW - ODS-Cu
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U2 - 10.2320/matertrans.MT-MBW2019005
DO - 10.2320/matertrans.MT-MBW2019005
M3 - Article
AN - SCOPUS:85084915388
SN - 1345-9678
VL - 61
SP - 955
EP - 962
JO - Materials Transactions
JF - Materials Transactions
IS - 5
ER -