High temperature strength of Pt-base superalloys with different γ′ volume fractions

M. Wenderoth, R. Völkl, T. Yokokawa, Y. Yamabe-Mitarai, H. Harada

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Pt-Al-Cr-Ni alloys with various γ′ volume fractions were investigated in terms of microstructure and compression strength at high temperature. In contrast to Ni-base superalloys, strengthening beyond the rule of mixture due to coherent γ/γ′ interfaces decreases with increasing temperature. Constrained and unconstrained lattice misfits were determined by high temperature X-ray diffraction analyses on the isolated γ and γ′ phases and on an alloy with about 50 vol.% γ′.

Original languageEnglish
Pages (from-to)275-279
Number of pages5
JournalScripta Materialia
Volume54
Issue number2
DOIs
Publication statusPublished - 2006 Jan
Externally publishedYes

Keywords

  • Compression test
  • Platinum-group
  • Precipitation
  • X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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