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The Characteristics of Mechanical Properties and Fatigue Crack Propagation of Fire Resistance Steel for Frame Structure
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 Title & Authors
The Characteristics of Mechanical Properties and Fatigue Crack Propagation of Fire Resistance Steel for Frame Structure
Kim, Hyeon-Su; Nam, Gi-U; Gang, Chang-Ryong;
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 Abstract
This study is to investigate the mechanical properties and the fatigue crack propagation of fire resistance steel for frame structure as the chemical composition was changed by addition of N, B and rolled end temperature was varied. We used two kinds of specimen, the one is parallel and the other is perpendicular to the rolling directions. As rolled end temperature increased, volume fraction of ferrite and pearlite decreased, but volume fraction of baintie and grain size increased. Micro-hardness decreased as rolled end temperature increased, but tensile and yield strength increased. Volume fraction of ferrite and pearlite decreased by addition of N. But volume fraction of bainite, tensile and yield strength increased. Microstructure was changed to martensite by addition of B, and tensile and yield strength increased. Fatigue life of TL direction specimen was shorter than that of LT direction specimen. There was no significant effect to fatigue crack propagation rate by addition of N and changing rolling condition, but fatigue life was increased by addition of B.
 Keywords
Fire Resistance Steel for Frame Structure;Fatigue Crack Propagation Rate;Anisotropy;Low Yield Ratio;
 Language
Korean
 Cited by
 References
1.
中村秀司, 吉川秀章, 大失俊樹, 丸山 榮, 穗 ? 實, 1995, '建築事業部における混合構造の開發,' 新日鐵技報 第356號, pp. 47-53

2.
伏見光雅, 計良光一郞, 力石 寬, 1995, '建築耐火構造の開發,' 新日鐵技報, 第356號, pp. 31-37

3.
谷 三郞, 金子康弘, 石黑守辛, 大浜通洋, 1995, '鋼構造用鋼材-土木.建築構造用鋼材,' 新日鐵技報, No. 150, pp. 1-6

4.
藤田 徹, 服後裕一, 田中照夫, 浜中征一, 福村勝彦, 1996, '輕量鐵骨構造建築物用耐火鋼材の諸特性,' 新日鐵技報, No. 74, pp. 37-44

5.
이태호, 정윤철, 김성준, 1999, '슈퍼 오스테나이트계 Fe-22Cr-21Ni-6Mo-(0.3N) 스테인리스강의 고온 석출거동 및 질소첨가 영향,' 대한금속학회지, 제37권, 제4호, pp. 400-408

6.
이태호, 김성준, 1997, '고질소 오스테나이트계 내식강의 고온변형특성,' 대한금속학회지, 제35권, 제9호, pp. 1146-1155

7.
박광일, 주성민, 최한철, 최답천, 1998, 'Fe-38at.%Al합금의 미세조직과 기계적 성질에 미치는 Cr, Mo, Nb 및 B의 첨가효과,' 대한금속학회지, 제36권, 제3호, pp. 377-384

8.
한승호, 김정규, 1997, '철강구조물 부재의 강도평가 및 피로균열진전거동,' 대한기계학회논문집 A권, 제21권, 제10호, pp. 1694-1701

9.
송삼홍, 강명수, 1997, '터빈용 Cr-Mo-V강의 고온 환경변화에 따른 피로거동에 관한 연구,' 대한기계학회논문집 A권, 제21권, 제1호, pp. 173-179

10.
소태원, 윤기봉, 정세희, 1996, '표면균열을 갖는 원형봉재 시편을 이용한 고온 피로균열 성장 연구,' 대한기계학회논문집 A권, 제20권, 제11호, pp. 3451-3423

11.
부명환, 박영철, 廣瀨辛雄, 1998, 'WC-Co초경합금의 피로균열진전특성에 미치는 미시조직의 영향,' 대한기계학회논문집 A권, 제22권, 제8호, pp. 1409-1417