서지주요정보
316L 스테인리스 강에서 입자 성장 양상에 미치는 입계 구조의 영향 = Effects of grain boundary structure on grain growth behavior in 316L stainles steel
서명 / 저자 316L 스테인리스 강에서 입자 성장 양상에 미치는 입계 구조의 영향 = Effects of grain boundary structure on grain growth behavior in 316L stainles steel / 최정식.
저자명 최정식 ; Choi, Jeong-Sik
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8007477

소장위치/청구기호

학술문화관(문화관) 보존서고

MMS 97037

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초록정보

The grain growth behavior in 316L stainless steel have been investigated in relation to grain boundary structure transformations. Grain boundary structure changes with annealing temperature, which may give another possibility to interpret grain growth behavior in polycrystalline materials. 316L stainless steel specimens are annealed under Ar atmosphere at 1100 deg,1200 deg and 1300 deg where no precipitation is observed. The internal microstructures and the grain size distributions of the specimens annealed at 1100 deg show the abnormal grain growth (AGG) behavior, while those at 1200 deg, 1300 deg show the normal grain growth (NGG) behavior. It is suggested that some non-linear relationships between driving force and migration rate exist in ordered grain boundaries (ordered grain boundary structure can be introduced by lowering heat-treatment temperature) and lead to AGG. For verification, two stage heat-treatments, step-up and step-down, are performed. It seems that the size advantage or the recrystallization texture is not sufficient to trigger AGG, and there should be ordering of grain boundary structures. As a evidence, TEM micrographs of faceted non-twin boundaries are presented; faceted boundaries are expected to have ordered structures. Faceted non-twin boundaries are found in the specimens annealed at 1100 deg where AGG occurs, while all of the boundaries have smooth and curved shapes at 1300 deg except twin boundaries.

서지기타정보

서지기타정보
청구기호 {MMS 97037
형태사항 iii, 69 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jeong-Sik Choi
지도교수의 한글표기 : 윤덕용
지도교수의 영문표기 : Duk-Yong Yoon
학위논문 학위논문(석사) - 한국과학기술원 : 재료공학과,
서지주기 참고문헌 : p. 65-69
주제 316L 스테인리스 강
비정상 입자 성장
입계 상전이
316L Stainless steel
Abnormal grain growth
Grain boundary phase transition
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