SEDL / STP / STP174-EB / STP44992S

High-Temperature Properties of Molybdenum-Rich Alloy Compositions Made by Powder Metallurgy Methods

Bruckart, W. L.
Development Engineer, Universal-Cyclops Steel Corp., Bridgeville, Pa

Jaffee, R. I.
Division Chief, Nonferrous Physical Metallurgy Div., Battelle Memorial Inst., Columbus, Ohio

Pages: 24    Published: Jan 1956

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Abstract

Molybdenum compositions made by powder metallurgy methods with metallic and oxide additions were studied. The effects of these additions on creep-rupture properties and on resistance to recrystallization are described. Results showed that nonmetallic dispersions provided greater increases in rupture time than solid solution additions. Outstanding among the nonmetallics were ZrO² and TiO². Silicon was the outstanding metallic alloying addition. At 1800 F, some of the oxide additions increased the rupture strength of molybdenum almost fourfold. The best metallic additions were considerably less effective than the best oxide additions.