서지주요정보
3.5wt.% NaCl 용액에서 3.5NiCr 강의 응력부식파괴 거동에 미치는 인(P)의 함량 및 tempering 온도의 영향 = Effects of P content and tempering temperature on the behaviour of stress corrosion cracking of 3.5 NiCr steel in 3.5 wt.% NaCl solution
서명 / 저자 3.5wt.% NaCl 용액에서 3.5NiCr 강의 응력부식파괴 거동에 미치는 인(P)의 함량 및 tempering 온도의 영향 = Effects of P content and tempering temperature on the behaviour of stress corrosion cracking of 3.5 NiCr steel in 3.5 wt.% NaCl solution / 송복한.
저자명 송복한 ; Song, Bok-Han
발행사항 [서울 : 한국과학기술원, 1989].
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소장정보

등록번호

4105565

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8912

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Stress corrosion (SC) crack propagation rate and fracture mode of stress corrosion cracking (SCC) of 3.5 NiCr steels have been determined as a function of P-content (60, 400 ppm) and tempering temperature (250, 350, 450℃). Bolt-loaded wedge opening load (WOL) specimens were used for SCC tests in aqueous 3.5wt.% NaCl solution at 30℃. SC crack propagation rate of the P-undoped steel decreased as the tempering temperature increased. On the other hand, SC crack propagation rate of the P-doped steel decreased in the sequence of 350, 250, 450°C-tempered specimens. This was discussed as being related to the grain boundary weakening due to P segregation and yield strength effects. As stress intensity factor $K_I$ decreased, the corresponding SCC fracture mode changed from microvoid coalescence (MVC) mode to intergranular (IG) mode. Also, the transition in fracture mode from MVC to IG occurred at lower $K_I$ level as the yield strength decreased. The change of the transition in fracture mode with varying $K_I$ and yield strength has been discussed by considering the micromechanisms of SCC and yield strength dependence of critical hydrogen concentration bearing on the respective modes, simultaneously.

서지기타정보

서지기타정보
청구기호 {MMS 8912
형태사항 iv, 49 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Bok-Han Song
지도교수의 한글표기 : 변수일
지도교수의 영문표기 : Su-Il Pyun
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 31-37
주제 Stress corrosion.
Tempering.
Nickel alloys.
Phosphorus.
응력 부식. --과학기술용어시소러스
뜨임. --과학기술용어시소러스
수용액. --과학기술용어시소러스
니켈 합금. --과학기술용어시소러스
항복 응력. --과학기술용어시소러스
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