New P/M Fe-Cr-Al alloy with excellent hot strength

New P/M Fe-Cr-Al alloy with excellent hot strength

P/M heating alloy containing 23%Cr-5%Al was produced by Gas-Atomization and HIP process. The microstructures and the hot strength of this alloy were investigated in comparison with conventionally cast and forged alloy. A uniform distribution of small precipitates and a fine grained structure were fo...

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Veröffentlicht in:Journal of the Japan Society of Powder and Powder Metallurgy 1996, Vol.43 (3), p.373-376
Hauptverfasser: Notomi, K, Hosokawa, H
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container_title Journal of the Japan Society of Powder and Powder Metallurgy
container_volume 43
creator Notomi, K
Hosokawa, H
description P/M heating alloy containing 23%Cr-5%Al was produced by Gas-Atomization and HIP process. The microstructures and the hot strength of this alloy were investigated in comparison with conventionally cast and forged alloy. A uniform distribution of small precipitates and a fine grained structure were found in an annealed state. It was also found that secondary recrystallization took place after a time at a high temperature, resulting in an extremely large grained structure. Excellent hot strength due to the large grained structure was confirmed by a hot tensile test and a practical test in our HIP furnace.
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title New P/M Fe-Cr-Al alloy with excellent hot strength
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