The effect of Nb solute and NbC precipitates on dynamic and metadynamic recrystallisation in Ni-30Fe-Nb-C model alloys

Authors

Parvez Mannan, University of WollongongFollow
Gilberto Casillas, University of WollongongFollow
Elena V. Pereloma, University of WollongongFollow

RIS ID

114755

Publication Details

Mannan, P., Casillas-Garcia, G. & Pereloma, E. V. (2017). The effect of Nb solute and NbC precipitates on dynamic and metadynamic recrystallisation in Ni-30Fe-Nb-C model alloys. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 700 116-131.

Abstract

Dynamic and metadynamic recrystallisation behaviour of Ni-30Fe-Nb-C model alloys during plane strain compression was investigated by optical and electron microscopy. The dynamically recrystallised grains were primarily located at the pre-existing grain boundaries with few additional new recrystallised grains in the prior grain interior. A limited nucleation of recrystallised grains at >400 nm size NbC particles was also evident. On the other hand, smaller semi-coherent particles (~10–150 nm) severely inhibit the dislocations rearrangement and subgrain boundary mobility, thus leading to sluggish or even suppressed dynamic and metadynamic recrystallisation.

Grant Number

ARC/LP110100231

Grant Number

ARC/LE120100104