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A 3-phase silicide alloy, Mo-9.4Si-13.8B (at.%), was prepared via powder metallurgy techniques. The tensile properties of the alloy at elevated temperatures were evaluated in vacuum at temperatures ranging from 1350 to 1550 o C and strain rates ranging from 5.0x10 -4 to 1x10 -3 s -1 . The alloy was found to exhibit a stress exponent of about 2.8 and relatively...
The objective of this study is to improve the mechanical properties by careful control of both microstructure and alloy additions in two-phase TiAl alloys based on Ti-47Al-2Cr-2Nb (at%). Hot extrusion at temperatures above T α produces refined lamellar structures, whose microstructural features can be further controlled by subsequent heat-treatment at and above 900 °C. The mechanical properties...
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