서지주요정보
압력용기강 SA508의 조사경화 회복에 관한 연구 = A study on irradiation hardening recovery of reactor pressure vessel steel SA508
서명 / 저자 압력용기강 SA508의 조사경화 회복에 관한 연구 = A study on irradiation hardening recovery of reactor pressure vessel steel SA508 / 목용균.
저자명 목용균 ; Mok, Yong-Kyoon
발행사항 [서울 : 한국과학기술원, 1988].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4105156

소장위치/청구기호

학술문화관(문화관) 보존서고

MNE 8808

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Surveillance specimens of reactor pressure vessel steel SA 508 irradiated to a fluence of $1.03×10^{19}$ n/㎠ (E > 1MeV) were given isothermal annealing to study recovery of irradiation hardening. After isothermal annealing at three different temperatures in the range of 405-454℃ for a time interval up to 2353 minutes, microhardness tests were conducted. Instead of the fractional recovery method based on a single activated process, the superposition principle that is based on the sum of unirradiated microhardness and microhardness changes due to presence of various defect types was employed to analyze hardening recovery mechanisms and activation energies associated with their annihilations. The present analysis showed that irradiation hardening recovery may be divided into two mechanisms. Recovery mechanism 1 with activation energy of 1.89eV is accounted for by the coalescence due to vacancy evaporation of depleted zones that exist so closely to interact with one another. Recovery mechanism 2 with activation energy of 2.19eV give rise to for 75% of total microhardness recovery. This mechanism is accounted for by both coarsening of Cu precipitates/annihilation of Cu-vacancy aggregates and vacancy evaporation from microvoids that act independently from one another or solely by the former process involving Cu-bearing entity. The activation energy determined by the fractional recovery is 1.92eV. This energy appears to be biased with respect to ratio of defects responsible for recovery mechanism 1 and 2, namely, 25% and 75% respectly.

서지기타정보

서지기타정보
청구기호 {MNE 8808
형태사항 [iv], 52 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yong-Kyoon Mok
지도교수의 한글표기 : 윤용구
지도교수의 영문표기 : Young-Ku Yoon
학위논문 학위논문(석사) - 한국과학기술원 : 핵공학과,
서지주기 참고문헌 : p. 31-35
주제 Steel.
Irradiation.
Strain hardening.
원자로 용기. --과학기술용어시소러스
압력 용기용 강. --과학기술용어시소러스
조사 (방사선) --과학기술용어시소러스
경화 (열처리) --과학기술용어시소러스
Nuclear pressure vessels.
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