Image icon  Ni-Superalloy, heat treated above gamma-prime solvus

Use this resource: Use this resource icon
Link to this page:
View at:            
Resource type: Image
Description: Micrograph shows a microstructure now devoid of γ' as at this temperature it has become fully dissolved into the matrix. This results in grain growth, partly due to the solution of γ' into the γ matrix and also because the main mechanism for preventing grain growth, namely the primary γ' is no longer present. Carbide phases still exist and act in places to inhibit grain boundary motion and therefore grain growth.

View schematic diagram of γ' microstructure
Keywords: heat treatment • nickel
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Nickel & alloys
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: DoITPoMS, University of Cambridge
R J Mitchell, Rolls-Royce University Technology Centre, Department of Materials Science and Metallurgy, University of Cambridge
Published by: DoITPoMS, University of Cambridge
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
Creative Commons Attribution Non-Commercial Share Alike logo
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • noncommercial – You may not use this work for commercial purposes.
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
View the full legal code here.
Date created: 05 March 2003
Date added: 21 August 2009
Resource ID: 1755