A hardening model considering grain size effect for ion-irradiated polycrystals under nanoindentation

Kai Liu; Xiangyun Long; Bochuan Li; Xiazi Xiao; Chao Jiang

doi:https://doi.org/10.1016/j.net.2021.03.007

추천

검색

자료유형: 학술저널

저자정보: Kai Liu (Hunan University) Xiangyun Long (Hunan University) Bochuan Li (Hunan University) Xiazi Xiao (Central South University) Chao Jiang (Hunan University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제9호

발행연도: 2021.9

수록면: 2,960 - 2,967 (8page)

DOI: https://doi.org/10.1016/j.net.2021.03.007

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In this work, a new hardening model is proposed for the depth-dependent hardness of ion-irradiatedpolycrystals with obvious grain size effect. Dominant hardening mechanisms are addressed in the model,including the contribution of dislocations, irradiation-induced defects and grain boundaries. Two versionsof the hardening model are compared, including the linear and square superposition models. Asuccinct parameter calibration method is modified to parametrize the models based on experimentallyobtained hardness vs. indentation depth curves. It is noticed that both models can well characterize theexperimental data of unirradiated polycrystals; whereas, the square superposition model performsbetter for ion-irradiated materials, therefore, the square superposition model is recommended. Inaddition, the new model separates the grain size effect from the dislocation hardening contribution,which makes the physical meaning of fitted parameters more rational when compared with existinghardness analysis models.

#Hardness #Ion irradiation #Grain size effect #Theoretical model #Nanoindentation

참고문헌 (20)

참고문헌 신청

S. J. Zinkle / 2009 / Structural materials for fission & fusion energy / Mater. Today 12(11):12~19

김상인 / 2015 / A REVIEW OF NEUTRON SCATTERING CORRECTION FOR THE CALIBRATION OF NEUTRON SURVEY METERS USING THE SHADOW CONE METHOD / Nuclear Engineering and Technology 47(7):939~944

R. Kasada / 2014 / Depth-dependent nanoindentation hardness of reduced-activation ferritic steels after MeV Fe-ion irradiation / Fusion Eng. Des 89(7):1637~1641

Chaoliang Xu / 2016 / The Studies of Irradiation Hardening of Stainless Steel Reactor Internals under Proton and Xenon Irradiation / Nuclear Engineering and Technology 48(3):758~764

C. Heintze / 2011 / Ion-irradiation-induced dam-age in FeeCr alloys characterized by nanoindentation / J. Nucl. Mater 417(1):980~983

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!