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논문 기본 정보

자료유형
학술대회자료
저자정보
Woo-Gon Kim (Korea Atomic Energy Research Institute) Jae-Young Park (Pukyong National University) I.M.W. Ekaputra (Pukyong National University) Hyeong-Yeon Lee (Korea Atomic Energy Research Institute) Seon-Jin Kim (Pukyong National University)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2014년도 추계학술대회
발행연도
2014.11
수록면
794 - 798 (5page)

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초록· 키워드

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High-temperature tensile behavior for Grade 91 (Gr. 91) steel for use of a sodium-cooled fast reactor (SFR) structure was investigated, and full-range stress-strain curves were described in terms of RCC-MRx procedures (French SFR code) and four constitutive equations: power-law form, logarithmic form, exponential form, and modified form (powerlaw + exponential). To do this, a series of high-temperature tensile data was obtained from the tensile tests performed with a strain rate of 6.67 x10-4 (1/s) at R.T to 650oC. On the basis of experimental tensile data, full-range stress-strain curves were designed by RCC-MRx procedures. In addition, a modified constitutive equation in terms of a combination of power-law form and exponential form were proposed to well describe the full-range stress-strain curves, and the suitable equation in the four equations was investigated by fitting to the experimental curves. Results showed that the stress-strain curves designed by RCC-MRx were in accordance with the experimental curves at all of the temperature ranges, and a proposed modified equation was found to be superior in modeling of the stress-strain curves to the other equations. It can be conveniently used in modeling full-range stress-strain curves without calculation procedures in RCC-MRx code.

목차

Abstract
1. Introduction
2. Experimental procedures
3. Results and discussion
4. Conclusions
References

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