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Improvement of oxidation resistance of arc-melted Mo76Si14B10 by microstructure control upon minor Fe addition

Nawnit Kumar,B. Roy,R. Mitra,J. Das

Intermetallics（2017）

Cited 10|Views9
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Abstract
Addition of Fe refines the microstructure of Mo76-xSi14B10Fex (x = 0, 0.5, 1 at.%) composites containing α-Mo, Mo3Si and Mo5SiB2 phases, increases the hardness from 950 Hv (x = 0) to 1031 Hv (x = 1), and improves the oxidation resistance at temperature in the range of 800–1300 °C. The hardness of the base alloy substrate decreases only by <7% than that of as-solidified ingots, indicating good microstructural stability of the composite for high temperature application.
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Key words
A. intermetallics (silicides),B. alloy design,B. oxidation,D. microstructure,F. electron microscopy,Scanning
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