서지주요정보
27 % Cu-Ni 합금의 cyclic creep 상태에 미치는 응력 주기의 영향 = Stress period effect or cyclic creep of cupper-nickel alloy
서명 / 저자 27 % Cu-Ni 합금의 cyclic creep 상태에 미치는 응력 주기의 영향 = Stress period effect or cyclic creep of cupper-nickel alloy / 홍경태.
저자명 홍경태 ; Hong, Kyung-Tae
발행사항 [서울 : 한국과학기술원, 1982].
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소장정보

등록번호

4101662

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8232

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The cyclic creep is dependent on the stress condition and temperature. The stress conditions were amplitude, period and due time ratio. In order to know the stress period effect on the cyclic creep state, only the stress period was varied when other conditions were kept constant. Test conditions in which the cyclic creep rate was lower than the static creep rate was used. At the 0.50 Tm, the cyclic creep rate and strain differences due to the stress period alteration were small. But at the 0.42 Tm, the cyclic creep rate and strain differences due to the stress period alteration were large. The activation energy was measured from the typical Arrhenius plot near the 0.46 Tm. The measured activation energy was 380 KJ/mole. This showed the interaction between solute and dislocation. The cyclic to static transient behaviours were observed at the 0.46 Tm and 0.42 Tm. At the 0.46 Tm, the primary stage of the transient behaviour was more dominent at the shorter stress period. At the 0.42 Tm, sigmoidal transient behaviour were observed at the stress period of 16 sec and 34 sec. When this phenomenon occured, the cyclic creep rate was very reduced. In the cyclic creep behaviour of Cu-Ni solid solution, the interaction force between solute and dislocation was dependent on the stress period. This interaction force was larger at the short stress period and smaller at the long stress period. The interaction force between dislocation and dislocation depended on the stress period, too. This interaction force was large at the long stress period and small at the short stress period. But the interaction of solute and dislocation was dominent. So, the creep rate and strain were reduced as the stress period became shorter.

서지기타정보

서지기타정보
청구기호 {MMS 8232
형태사항 [iii], 54 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Kyung-Tae Hong
지도교수의 한글표기 : 남수우
지도교수의 영문표기 : Soo-Woo Nam
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 53-54
주제 Copper-nickel alloys.
Creep.
구리 합금. --과학기술용어시소러스
크리프. --과학기술용어시소러스
응력. --과학기술용어시소러스
상호 작용. --과학기술용어시소러스
활성화 에너지. --과학기술용어시소러스
Activation energy.
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