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The effects of environment on the dry sliding wear behavior of Ti-47Al-2Cr-2Nb-0.2W (at.%) prepared by hot isostatic pressing (HIP) of powders have been investigated. Room temperature pin-on-disk tribotests were performed against an yttria-stabilized zirconia counterface in four different environments: air, oxygen, 4% hydrogen in nitrogen, and argon. It was found that this alloy is sensitive to the...
The electronic structure and magnetism of Heusler alloys Mn 2 NiGe and Ni 2 MnGe have been studied by first-principles calculations. The possible non-modulated tetragonal martensitic transformation in them has been predicted. For both Mn 2 NiGe and Ni 2 MnGe, the tetragonal martensitic phase is lower in energy compared with the cubic austenitic phase. In Ni 2 ...
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