Metallurgical Transactions A

, Volume 15, Issue 7, pp 1437–1441 | Cite as

Prior deformation effects on creep and fracture in inconel alloy X-750

  • M. C. Pandey
  • A. K. Mukherjee
  • D. M. R. Taplin
Mechanical Behavior

Abstract

Creep fracture process in Inconel alloy X-750 can be modified by room-temperature prestraining. It has been observed that fracture in the prestrained specimens occurred due to growth and interlinkage of the prenucleated voids whereas failure occurred by plastic instability in the non-prestrained specimens. Creep ductility and the times-to-rupture are found to decrease progressively with room-temperature prestraining, but there is no marked influence on the minimum creep rate. This is explained in terms of two compcting processes: a weakening effect caused by prenucleation of grain boundary voids and a hardening effect due to generation of dislocations due to the prestraining.

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Copyright information

© The Metallurgical Society of American Institute of Mining 1984

Authors and Affiliations

  • M. C. Pandey
    • 1
  • A. K. Mukherjee
    • 2
  • D. M. R. Taplin
  1. 1.Division of Materials Science and Engineering,Department of Mechanical EngineeringUniversity of CaliforniaDavis
  2. 2.Department of Mechanical and Manufacturing EngineeringTrinity College, University of DublinDublinIreland

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