동력기계공학회지 (Journal of Power System Engineering)

  • 제13권3호
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  • Pages.47-52
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  • 2009
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  • 2713-8429(pISSN)
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  • 2713-8437(eISSN)
한국동력기계공학회 (The Korean Society for Power System Engineering)
권호 표지

원심주조된 내열강의 미세조직 및 기계적성질에 미치는 단조 조건의 영향

Effect of Forging Condition on the Microstructure and Mechanical Properties in Centrifugal Casted Heat Resistant Steel

  • 발행 : 2009.06.30
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초록

The effect of forging start temperature, forging ratio on the microstructure and mechanical properties of B7B4 steel ware investigated. Microstructure of centrifugal casted B7B4 steel consisted of martensite and ferrite phase. The volume fraction of ferrite increased with increase of forging start temperature and decreased with increase of forging ratio. Tensile strength and hardness decreased with higher of forging start temperature, while impact value and elongation increased with higher of forging start temperature. With increase of forging ratio, tensile strength rapidly increased up to the forging ratio of 30%, and then slowly increased, but elongation was decreased. Hardness and impact value rapidly increased with increase of forging ratio.

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참고문헌

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