서지주요정보
Cu-Zn 합금에서 적층 결함에너지가 cyclic creep 에 미치는 영향 = The effect of stacking fault energy on cyclic creep in Cu-Zn alloys
서명 / 저자 Cu-Zn 합금에서 적층 결함에너지가 cyclic creep 에 미치는 영향 = The effect of stacking fault energy on cyclic creep in Cu-Zn alloys / 최재영.
저자명 최재영 ; Choi, Jae-Young
발행사항 [서울 : 한국과학기술원, 1985].
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등록번호

4103307

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8546

SMS전송

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초록정보

Static and cyclic creep tests on α-solid solution Cu-Zn alloys (5, 10, 30% Zn) have been made at 665K to study the effect of stacking fault energy (SFE) on cyclic creep. The test temperature, 665K, is about 0.5 Tm of 95Cu-5Zn and 90Cu-10Zn alloys, and about 0.56Tm of 70Cu-30Zn alloy, where Tm is melting temperature of each alloy. The stress is normalized with Young's modulus at test temperature. The results of the tests are as follows: (1) Stress exponents of both static and cyclic creep rate decreased with increasing zinc content. (2) At the same zinc content, stress exponent of cyclic creep rate was observed to be larger than that of static creep rate. (3) The steady state creep rates of both static and cyclic creep were functions of SFE, and SFE dependence of cyclic creep rate was found to be larger than that of static creep rate. This fact was explained in terms of the theory that excess vacancies created by cyclic stress help the climb of edge dislocations, which is easy in the materials with high SFE. To confirm the excess vacancy model, static and cyclic creep tests were conducted at higher temperature, 895K, about 0.7 Tm of the alloys. There was no difference between the SFE dependences of static and cyclic creep rates. This was interpreted as less contribution of mechanically generated vacancies to thermal vacancies, compared with lower temperature.

서지기타정보

서지기타정보
청구기호 {MMS 8546
형태사항 [iii], 35 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Young Choi
지도교수의 한글표기 : 남수우
지도교수의 영문표기 : Soo-Woo Nam
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 33-35
주제 Creep.
Copper alloys.
Point defects.
구리 합금. --과학기술용어시소러스
크리프. --과학기술용어시소러스
적동 결함 에너지. --과학기술용어시소러스
점 결함. --과학기술용어시소러스
Stacking fault energy.
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