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Thermal stability of ultrafine grained Fe–Cr–Ni alloy
- Source :
-
Materials Science & Engineering: A . Apr2012, p64-70. 7p. - Publication Year :
- 2012
-
Abstract
- Abstract: Equal channel angular pressing was used to refine the microstructure of a Fe–14Cr–16Ni (wt.%) alloy. The as-processed alloy had predominantly equiaxed austenite fine grains with an average grain size of 0.4μm and a low fraction of deformation induced martensite. Ex situ isothermal annealing experiments showed the fine microstructure was thermally stable up to 673K, and abnormal grain growth occurred at ∼873K. In situ annealing studies in a transmission electron microscope revealed the coarsening of grains. Analysis of grain growth kinetics from 873 to 1073K yielded average activation energy of grain growth to be ∼207kJ/mol. The grain growth mechanisms and annealing induced evolution of mechanical properties were discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09215093
- Database :
- Academic Search Index
- Journal :
- Materials Science & Engineering: A
- Publication Type :
- Academic Journal
- Accession number :
- 73776258
- Full Text :
- https://doi.org/10.1016/j.msea.2012.02.033