서지주요정보
동적시효 현상이 304 austenitic stainless steel 의 변형 속도 감도에 미치는 영향에 관한 연구 = Study on the effect of dynamic strain ageing on the strain rate sensitivity of 304 austenitic stainless steel
서명 / 저자 동적시효 현상이 304 austenitic stainless steel 의 변형 속도 감도에 미치는 영향에 관한 연구 = Study on the effect of dynamic strain ageing on the strain rate sensitivity of 304 austenitic stainless steel / 한준희.
저자명 한준희 ; Hahn, Jun-Hee
발행사항 [서울 : 한국과학기술원, 1985].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4103311

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 8551

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Until recently, the dynamic strain ageing effect had been identified with "serrated flow" and, therefore, studied through the observation of serrations on the stress-strain curve. In this study, the dynamic strain ageing effect was observed through the strain rate sensitivity, i.e., the stress change due to the sudden change of strain rate during the deformation. The new experimental methods attempted in this study are that the strain rate was changed at the same stress and strain on the cyclically stabilized stress-strain curve so that the work hardening effect could be eliminated, that after the strain rate change, the initial and the gradual stress changes were measured separately identifing the former with the viscous effect and the latter with the dynamic strain aging effect, and that the experiments were performed in relatively large strain rate range of $3.2 × 10^{-7}$ to $3.2 × 10^{-3}$ and temperature range of 20℃ to 800℃. Among the substitutional alloys which are of our interests for the current study, 304 austenitic stainless steel was chosen as a test material because its dynamic strain ageing temperature and strain rate ranges suit best to our experimental facilities. The main conclusions are that the dynamic strain ageing effect can be studied quantitatively and the strain rate change method is very effective for the purpose, and that, for 304 austenitic stainless steel, the dynamic strain ageing effect appears most strongly at the temperatures 300℃, 400℃, 500℃, and 600℃, for the strain rates $10^{-6}$, $10^{-5}$, $10^{-4}$, and $10^{-3}$, respectively.

서지기타정보

서지기타정보
청구기호 {MMS 8551
형태사항 [iv], 65 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jun-Hee Hahn
지도교수의 한글표기 : 문한규
지도교수의 영문표기 : Han-Gue Moon
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 22-25
주제 Steel, stainless.
Aging.
m값. --과학기술용어시소러스
스테인리스강. --과학기술용어시소러스
시효. --과학기술용어시소러스
Strain rate.
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