Intermetallic reinforced Cr alloys for high-temperature use

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

18 Scopus Citations
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Author(s)

  • M. P. Brady
  • J. H. Zhu
  • P. F. Tortorelli
  • L. R. Walker
  • C. G. McKamey
  • J. L. Wright
  • C. A. Carmichael
  • D. J. Larson
  • M. K. Miller
  • W. D. Porter

Detail(s)

Original languageEnglish
Pages (from-to)189-193
Journal / PublicationMaterials at High Temperatures
Volume16
Issue number4
Publication statusPublished - 1999
Externally publishedYes

Abstract

A new family of Cr(Ta)-Cr2Ta intermetallic alloys based on Cr-(6-10)Ta (at%) is currently under development for structural use in oxidizing environments in the 1,000-1,300 °C temperature range. These alloys show excellent strength and creep resistance and good oxidation resistance at high temperatures in air. Oxidation resistance comparable to commercial reactive element doped chromia-forming alloys and creep resistance comparable to single-crystal superalloys have been demonstrated. To date, only modest room-temperature fracture toughness (in the 11-12 MPa m 1/2 range) has been achieved. Preliminary results of a promising approach to improve room-temperature fracture toughness via ductilization of Cr with MgO additions are discussed.

Citation Format(s)

Intermetallic reinforced Cr alloys for high-temperature use. / Brady, M. P.; Zhu, J. H.; Liu, C. T.; Tortorelli, P. F.; Walker, L. R.; McKamey, C. G.; Wright, J. L.; Carmichael, C. A.; Larson, D. J.; Miller, M. K.; Porter, W. D.

In: Materials at High Temperatures, Vol. 16, No. 4, 1999, p. 189-193.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review