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      가스터빈용 초내열 합금의 고온 브레이징에 관한 연구

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      https://www.riss.kr/link?id=A82395251

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      다국어 초록 (Multilingual Abstract)

      High temperature brazing with nickel-based filler metal was carried out to study the high temperatuer brazing behavior of superalloys. Both additive metal(IN 738) and the filler metals(AMDRY DF-4B and AMS 4778) were provided in a from of mixed with gas atomized powders and organic binder. This brazing paste was inserted into the gap between the joining parts, and a pressure of 0.05 to IMPa was applied to joining parts. The brazing process was conducted in vacuum furnace under2×10??torr. The microstructure and porosity of the brazed area were characterised by SEM, EDX and image analyser. The Cr borides with a blocky morphology were presents in the matal braged with DF-4B filler metals. Ni-Ni₃B eutectic phase was observed in both filler metals. The area braged with DF 4B exhibited much higher porosity than the one with AMS 4778. the pressure of 0.1-0.4MPa was found to produce lower porosity.
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      High temperature brazing with nickel-based filler metal was carried out to study the high temperatuer brazing behavior of superalloys. Both additive metal(IN 738) and the filler metals(AMDRY DF-4B and AMS 4778) were provided in a from of mixed with ga...

      High temperature brazing with nickel-based filler metal was carried out to study the high temperatuer brazing behavior of superalloys. Both additive metal(IN 738) and the filler metals(AMDRY DF-4B and AMS 4778) were provided in a from of mixed with gas atomized powders and organic binder. This brazing paste was inserted into the gap between the joining parts, and a pressure of 0.05 to IMPa was applied to joining parts. The brazing process was conducted in vacuum furnace under2×10??torr. The microstructure and porosity of the brazed area were characterised by SEM, EDX and image analyser. The Cr borides with a blocky morphology were presents in the matal braged with DF-4B filler metals. Ni-Ni₃B eutectic phase was observed in both filler metals. The area braged with DF 4B exhibited much higher porosity than the one with AMS 4778. the pressure of 0.1-0.4MPa was found to produce lower porosity.

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      목차 (Table of Contents)

      • Abstract
      • 1. 서론
      • 2. 실험 방법
      • 3. 결과
      • 4. 결론
      • Abstract
      • 1. 서론
      • 2. 실험 방법
      • 3. 결과
      • 4. 결론
      • 후기
      • 참고문헌
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