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Journal of KWJS 2008;26(1):76-82.
Published online March 21, 2008.
Nb의 첨가에 따른 Ti 첨가 저합금강 용접열영향부에서의 석출물 거동 변화
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Precipitation and Precipitate Coarsening Behavior According to Nb Addition in the Weld HAZ of a Ti-containing Steel
Joonoh Moon, Changhee Lee
Abstract
  The effect of Nb addition on the precipitation and precipitate coarsening behavior was investigated in Ti and Ti + Nb steel weld HAZ. A dilatometer equipped with a He-quenching system was used to simulate the weld thermal cycle. Compared to TiCyN1-y precipitate in a Ti containing steel, TixNb1-xCyN1-y complex particle with addition of Nb is precipitated in a Ti + Nb containing steel. Meanwhile, precipitate coarsening occurred more easily in Ti + Nb steel, which may be because the high temperature stability of TixNb1-xCyN1-y complex particle is deteriorated by the Nb addition.
Key Words: Ti<, SUB>, x<, /SUB>, Nb<, SUB>, 1-x<, /SUB>, C<, SUB>, y<, /SUB>, N<, SUB>, 1-y<, /SUB>, Precipitation, Coarsening, Heat Affected Zone
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