Metallurgical and Materials Transactions A

, Volume 36, Issue 3, pp 567–575 | Cite as

On the development and investigation of quaternary Pt-based superalloys with Ni additions

  • M. Wenderoth
  • U. Glatzel
  • R. Völkl
  • L. A. Cornish
  • R. Süss
  • S. Vorberg
  • B. Fischer


The objective of this work is to mimic the microstructure and strengthening mechanisms of Ni-based superalloys in a new group of high-temperature alloys based on the system Pt-Al. The elements Cr and Ni were chosen as further alloying components. Having a face-centered cubic (fcc) crystal structure with an Ll2-ordered and coherently embedded phase, these new alloys should increase creep and corrosion resistance beyond Ni-based superalloys. After arc melting and heat treatment, the alloys were investigated by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD). In the aged condition, the alloy composition 13 at. pct Al, 3 at. pct Cr, 7 at. pct Ni, and balance Pt showed the most promising microstructure with cubical precipitates, 30 pct precipitate volume fraction, and a lattice misfit of about −0.1 pct at room temperature.


Material Transaction Precipitate Size Lattice Misfit Homogenization Heat Treatment Digital Scanning Electron Microscopy 
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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2005

Authors and Affiliations

  • M. Wenderoth
    • 1
  • U. Glatzel
    • 1
  • R. Völkl
    • 1
  • L. A. Cornish
    • 2
  • R. Süss
    • 2
  • S. Vorberg
    • 3
  • B. Fischer
    • 3
  1. 1.Metallic Materials DepartmentUniversity BayreuthBayreuthGermany
  2. 2.Advanced Materials GroupPhysical Metallurgy Division, MINTEKRandburgSouth Africa
  3. 3.University of Applied Sciences JenaJenaGermany

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