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자료유형
학술저널
저자정보
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제23권 제4호
발행연도
2009.8
수록면
52 - 57 (6page)

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The effect of aging treatment on the microstructure and mechanical properties of super duplex stainless steel with W was investigated. The phase was precipitated mainly at the early stage of aging and a lower aging temperature under 750℃, but the phase was formed after long-term aging treatment between 600℃ and 900℃. The volume fraction of the phase increased with aging temperature up to 750℃ and then decreased up to 900℃. With an increase in the aging time, the volume fraction phase at the early stage of aging increased slightly, and then increased rapidly beyond a certain time. The rapid increase in the tensile strength and hardness and decrease in the elongation and impact toughness were measured with aging temperatures up to 750℃. On the other hand, the tensile strength and hardness decreased slightly, and the elongation and Charpy impact toughness were unchanged with aging temperatures over 750℃. The tensile strength and hardness increased rapidly at the early stage of aging, and then increased slowly beyond a certain time. The elongation and Charpy impact toughness decreased rapidly at the early stage of aging, and then remained unchanged beyond a certain time. The phase that formed at the early stage of aging and the lower aging temperature had a considerable effect on the elongation and Charpy impact toughness of the super duplex stainless steel with W.

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ABSTRACT
1. 서론
2. 실험 방법
3. 실험결과 및 고찰
4. 결론
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