Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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The Formation Behavior of Non-metallic Inclusion in the Ba-added Hyper Duplex STS

Hyper Duplex STS 중 Ba 첨가 시 비금속개재물 생성거동

  • 주성웅 (인하대학교 공과대학 신소재공학부) ;
  • 홍성훈 (인하대학교 공과대학 신소재공학부) ;
  • 박영민 (인하대학교 공과대학 신소재공학부) ;
  • 김광태 ((주)포스코 기술연구소) ;
  • 김지수 ((주)포스코 기술연구소) ;
  • 유병돈 (인하대학교 공과대학 신소재 공학부)
  • Received : 2011.08.29
  • Accepted : 2011.09.19
  • Published : 2011.11.01
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Abstract

The alkaline earth metal Ba has a relatively low melting point. Because of its significantly high affinity to oxygen, nitrogen and sulfur, it is highly functional as a steel refining agent. But Ba can adversely affect the properties of steel especially the workability, because it can form a variety of inclusions. So, understanding of these inclusions is needed for improvement of the properties of steel. Thus a fundamental study in the formation behavior of non-metallic inclusions in Ba added Hyper Duplex STS melts was investigated. The amount of Ba, holding time and temperature were considered as experimental variables. The number of non-metallic inclusions decreased and the large particle size of non-metallic inclusions increased as the amount of Ba increased. The number of non-metallic inclusions also decreased and the large particle size increased with increased holding times and temperatures of molten steel.

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References

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