서지주요정보
Untextured 와 textured Al-Cu-Mg-Si 합금의 WOL 시편을 이용한 응력 부식 균열 성장에 미치는 시효조건의 영향 = The effects of ageing conditions on the stress corrosion crack growth behaviour of untextured and textured Al-Cu-Mg-Si alloys using WOL-specimen
서명 / 저자 Untextured 와 textured Al-Cu-Mg-Si 합금의 WOL 시편을 이용한 응력 부식 균열 성장에 미치는 시효조건의 영향 = The effects of ageing conditions on the stress corrosion crack growth behaviour of untextured and textured Al-Cu-Mg-Si alloys using WOL-specimen / 김정태.
저자명 김정태 ; Kim, Jeong-Tae
발행사항 [서울 : 한국과학기술원, 1982].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4101640

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8209

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The electrochemical corrosion and stress corrosion crack growth properties of untextured and textured 2014 Al-Cu-Mg-Si alloys were studied related to ageing conditions in aqueous solutions of 53 g NaCl and 9 ml 30% $H_2O_2$/1 $H_2O$ (pH=5.5-5.6) at 30℃ and of 3.5 wt.% NaCl solution (pH=2.0-2.2) at 27℃, respectively. The compositions of the alloy tested were Al-4.65 Cu-0.46Mg-1.00Si-0.93Mn-0.18Fe in weight percentage. Electrochemical corrosion potential and corrosion rate were measured by means of potentiostatic method. The relation between stress corrosion crack growth rate V and the plane strain stress intensity factor $K_I$ was obtained by using Manjoine's WOL (Wedge-Opening-Loading) specimen under constant tension loading and in the NaCl test medium. Corrosion potential decreased with ageing time for both untextured and textured specimens, showing that the untextured specimen was more cathodic than the textured specimen in the initial stage of ageing. Corrosion rate increased and then decreased for textured specimens with ageing time. However, it decreased with ageing time for untextured specimens. Critical plane strain fracture toughness for stress corrosion cracking (SCC) K$_{\mbox{ISCC}}$, J$_{\mbox{ISCC}}$ and (K$_{\mbox{ISCC}}$/K_${\mbox{IC}})^2$ decreased and then increased for both untextured and textured specimens with ageing time. However, relative change in plane strain fracture toughness due to SCC K$_{\mbox{IC}}$-K$_{\mbox{ISCC}}$/K$_{\mbox{IC}}$ showed an increase and then decrease with ageing time for both untextured and textured specimens. Thus in the present study, the value of (K$_{ISCC}}/\sigma{\mbox{ys}})^2$ was considered as a measure of resistivity of SCC in the linear-elastic range and relative change in plane strain fracture toughness due to SCC, K$_{\mbox{IC}}$-K$_{\mbox{ISCC}}$/K_{\mbox{IC}}$ as a measure of susceptibility to SCC. The untextured specimen was shown to be more resistant to SCC than the textured specimen.

서지기타정보

서지기타정보
청구기호 {MMS 8209
형태사항 [iv], 69, viii p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jeong-Tae Kim
지도교수의 한글표기 : 변수일
지도교수의 영문표기 : Su-Il Pyun
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 수록
주제 Stress corrosion.
Aging.
Aluminum alloys.
응력 부식. --과학기술용어시소러스
균열 (기계) --과학기술용어시소러스
시효. --과학기술용어시소러스
알루미늄 합금. --과학기술용어시소러스
전기 화학적 부식. --과학기술용어시소러스
Fracture toughness.
Stress intensity factor.
QR CODE qr code