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      분말야금법에 의한 Ni-Al계 합금의 제조 = Fabrication of Ni-Al alloys by P/M.

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      https://www.riss.kr/link?id=A3133707

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      다국어 초록 (Multilingual Abstract)

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      Ni-(14~32)%Al alloys were sintered at 550~650℃ for 1hr in N2 gas or in vacuum. After sintering some specimen were annealed at 1100℃ for 1hr in order to obtain a uniform composition. The densification behaviour, microstructural features and alloying of Ni-Al sintered compacts were investigated by changing aluminum content, sintering temperature and atmosphere.
      It was found that Ni3Al and NiAl intermetallic compounds were easily fabricated by P/M method at 600℃ using the Ni and Al elemental powders. The density of specimens was higher in vacuum atmosphere than in N2 gas and increased with the aluminum content. Spotty and acicular microstructures appeared in Ni-14, 16%Al alloys. The grains formed were usually large in Ni-23. 32%Al alloys. The Ni3Al and NiAl phases were detected by X.R.D. in Ni-Al alloys. The hardness of Ni-23%Al alloy sintered at 600℃ showed maximum, being about 420kgㆍf/mm2.
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      Ni-(14~32)%Al alloys were sintered at 550~650℃ for 1hr in N2 gas or in vacuum. After sintering some specimen were annealed at 1100℃ for 1hr in order to obtain a uniform composition. The densification behaviour, microstructural features and alloyin...

      Ni-(14~32)%Al alloys were sintered at 550~650℃ for 1hr in N2 gas or in vacuum. After sintering some specimen were annealed at 1100℃ for 1hr in order to obtain a uniform composition. The densification behaviour, microstructural features and alloying of Ni-Al sintered compacts were investigated by changing aluminum content, sintering temperature and atmosphere.
      It was found that Ni3Al and NiAl intermetallic compounds were easily fabricated by P/M method at 600℃ using the Ni and Al elemental powders. The density of specimens was higher in vacuum atmosphere than in N2 gas and increased with the aluminum content. Spotty and acicular microstructures appeared in Ni-14, 16%Al alloys. The grains formed were usually large in Ni-23. 32%Al alloys. The Ni3Al and NiAl phases were detected by X.R.D. in Ni-Al alloys. The hardness of Ni-23%Al alloy sintered at 600℃ showed maximum, being about 420kgㆍf/mm2.

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      목차 (Table of Contents)

      • 1.서론
      • 2.실험방법
      • 3.실험결과 및 고찰
      • 4.결론
      • 1.서론
      • 2.실험방법
      • 3.실험결과 및 고찰
      • 4.결론
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