Tensile Creep Properties of Cr-Si Alloys at 980 °C in Air—Influence of Ge and Mo Addition

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ID: 268284
2021
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Abstract
The tensile creep behavior of Cr-Si alloys with Cr ≥ 91 at.% was investigated in air at 980 °C with a constant load of 50–100 MPa. Additionally, the influence of substitutional alloying additions of 2 at.% Ge and Mo, leading to ternary alloys was studied. The addition of Ge or Mo results in an improvement in creep strength, with the highest strength achieved with addition of Mo. For longer creep exposure times a strong effect is observed, because of severe nitrogen uptake from the air, depending on alloy composition. Based on the results a novel mechanism for the impact of chromium nitride formation on the creep behavior is proposed.
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pfizenmaier2021metalstensile Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Petra Pfizenmaier;Anke Silvia Ulrich;Mathias C. Galetz;Uwe Glatzel;Pfizenmaier, Petra;Ulrich, Anke Silvia;Galetz, Mathias C.;Glatzel, Uwe;
Journal metals
Year 2021
DOI
10.3390/met11071072
URL
https://www.mdpi.com/2075-4701/11/7/1072
Keywords
creep high-temperature properties cr-base alloys intermetallic phases

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