서지주요정보
77 wt.% -Cu 이원계 고용체 합금의 cylic creep 거동에 관한 연구 = Cyclic creep behaviors of 77wt% Ni-Cu binary solid solution alloy
서명 / 저자 77 wt.% -Cu 이원계 고용체 합금의 cylic creep 거동에 관한 연구 = Cyclic creep behaviors of 77wt% Ni-Cu binary solid solution alloy / 한광현.
저자명 한광현 ; Han, Kwang-Hyun
발행사항 [서울 : 한국과학기술원, 1981].
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등록번호

4001289

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8129

SMS전송

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초록정보

The plastic deformation behavior of 77 wt.% Ni-Cu polycrystalline solid solution under cyclic constrant stress was investigated by studying the difference of the creep behavior under cyclic constant stress and the creep behavior at identical maximum constant stress. The influence of such experimental variables as the applied stress, the test temperature and the amplitude of cyclic constant was investigated by comparing the steady state cyclic stress creep rate, $\dot{ε}_c$ and the steady state static stress creep rate, $\dot{ε}_c$ The creep rate for a cyclic stress of 78 to 167 MPa was always found to be lower than the half of the static creep rate at the test temperature of 826˚x(0.5Tm). The creep rate for a maximum cyclic stress of 333 to 411 MPa was always found to be greater than the half of the static creep rate at the test temperature of 661˚(0.4 Tm). The most important experimental observation in this study was that the cycling of the creep stress could increase the activation energy of the plastic deformation, depending upon the combination of the experimental variables. The anomaly of activation energy of the cyclic creep is analyzed in terms of interaction between substitutional solutes and dizlocations. It is believed that the retardation of the steady state cyclic stress creep rates, $\dot{ε}_c$ at the test temperature of 826˚K (0.5Tm) may be due to interaction between substitutional solutes and dislocations and the acceleration of the steady state cyclic stress creep rate, $\dot{ε}_c$ at the test temperature of 661˚K (0.4 Tm) may be due to the enhancement of short circuiting diffusion process resulting from the presence of the excess point defects generated athermally under cyclic stress.

서지기타정보

서지기타정보
청구기호 {MMS 8129
형태사항 [iii], 78 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Kwang-Hyun Han
지도교수의 한글표기 : 남수우
지도교수의 영문표기 : Soo-Woo Nam
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 72-[76]
주제 Creep.
Nickel alloys.
Deformations (Mechanics)
Diffusion.
크리프. --과학기술용어시소러스
니켈 합금. --과학기술용어시소러스
변형 (찌그러짐) --과학기술용어시소러스
변형 속도. --과학기술용어시소러스
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