高温強度に優れたFe-Cr-Al合金粉末材料の開発 [in Japanese] New P/M Fe-Cr-Al Alloy with Excellent Hot Strength [in Japanese]
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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.<BR>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.
- J. Jpn. Soc. Powder Powder Metallurgy
J. Jpn. Soc. Powder Powder Metallurgy 43(3), 373-376, 1996-03-15
Japan Society of Powder and Powder Metallurgy