Paper Title:
High Temperature Strength of Ir/Ir2Y Two Phase Alloys in the Ir-Pt-Y System
  Abstract

Possibilities of heat resistant alloys based on a C15 Laves phase and an FCC phase have been examined in the Ir-Pt-Y ternary system. Although the Ir solid solution phase (A1) and the Ir2Y phase (C15) are not in equilibrium in the Ir-Y binary system, this equilibrium is attained by small Pt additions to the binary system. High temperature compressive strength of an A1/C15 monovariant eutectic alloy was found to be much lower than that of Ir-15Nb, an Ir based γ/γ' alloy. Low strength of the present alloys is attributed to the absence of effective strengthening mechanisms that operate in the A1 phase; for Y is hardly dissolved within the A1 phase, by which solution hardening and precipitation hardening are not available.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
424-427
DOI
10.4028/www.scientific.net/MSF.654-656.424
Citation
N. Sekido, Y. Yamabe-Mitarai, "High Temperature Strength of Ir/Ir2Y Two Phase Alloys in the Ir-Pt-Y System ", Materials Science Forum, Vols. 654-656, pp. 424-427, 2010
Online since
June 2010
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Price
$32.00
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