Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Technical Developments and Trends of Earthquake Resisting High-Strength Reinforcing Steel Bars

내진용 고강도 철근의 제조와 기술 개발 동향

  • Hwang, Byoungchul (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Shim, Jae-Hyeok (High Temperature Energy Materials Research Center, Korea Institute of Science and Technology) ;
  • Lee, Myoung-Gyu (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Joonho (Department of Materials Science and Engineering, Korea University) ;
  • Jung, Jun-Ho (Hyundai Steel) ;
  • Kim, Bo-Sung (Daehan Steel) ;
  • Won, Sung-Bin (Dongkuk Steel)
  • 황병철 (서울과학기술대학교 신소재공학과) ;
  • 심재혁 (한국과학기술연구원 고온에너지재료연구센터) ;
  • 이명규 (고려대학교 신소재공학부) ;
  • 이준호 (고려대학교 신소재공학부) ;
  • 정준호 (현대제철 전기로제품개발1팀) ;
  • 김보성 (대한제강 생산관리팀) ;
  • 원성빈 (동국제강 봉형강연구팀)
  • Received : 2016.09.20
  • Accepted : 2016.09.26
  • Published : 2016.12.05
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Abstract

Since reconstruction of old town in Korea requires high-rise and seismic design construction, many attentions have been paid to high strength seismic reinforced steel bar. In the present paper, technical developments and trends are summarized for developing next-generation seismic reinforced steel bar of grade 700 MPa. Steelmaking process requires high energy efficiency and refining ability. Effects of alloying elements are explained, and alloy design based on computational thermodynamics is introduced. On the other hand, it is considered that grain size refinement by the controlled rolling and low temperature transformation structures formed by the accelerated cooling are effective to obtain acceptable mechanical properties with high strength. Finite element simulation analysis is also useful to understand plastic deformation by rolling, internal and external heat transfer, and corresponding phase transformation of austenite phase to various low-temperature transformation structures.

Keywords

Acknowledgement

Grant : 사회 안전 확보를 위한 700 MPa 급 철근 활용 내진용 철근콘크리트 개발

Supported by : 산업통상자원부

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