The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform

Peter Hodgson - One of the best experts on this subject based on the ideXlab platform.

  • effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, Georgina Kelly, Peter Hodgson
    Abstract:

    Abstract A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (eC,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (eC,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on eC,DSIT and eC,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, eC,DSIT and eC,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on eC,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

  • Ultrafine Ferrite Formation during hot strip rolling
    Materials Science and Technology, 2000
    Co-Authors: P J Hurley, Georgina Kelly, Peter Hodgson
    Abstract:

    A rolling process has been developed to produce ultrafine Ferrite in the surface layers of steel strip. Microscopic examination of the rolled steel revealed that the ultrafine Ferrite formed by mea...

Hossein Beladi - One of the best experts on this subject based on the ideXlab platform.

  • effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, Georgina Kelly, Peter Hodgson
    Abstract:

    Abstract A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (eC,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (eC,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on eC,DSIT and eC,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, eC,DSIT and eC,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on eC,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

  • Ultrafine Ferrite Formation in steels through thermomechanical processing
    2004
    Co-Authors: Hossein Beladi
    Abstract:

    The main aim of this study was to investigate the critical conditions for the Formation of ultrafine grain structures using hot torsion and wedge rolling techniques. In addition, the effect of thermomechanical parameters and steel composition on the critical conditions for ultrafine grain structure Formation has been systematically evaluated.

  • Effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering: A, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, G.l Kelly, P.d Hodgson
    Abstract:

    A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (C,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (C,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on C,DSIT and C,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, C,DSIT and C,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on C,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

P.d Hodgson - One of the best experts on this subject based on the ideXlab platform.

  • Effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering: A, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, G.l Kelly, P.d Hodgson
    Abstract:

    A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (C,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (C,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on C,DSIT and C,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, C,DSIT and C,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on C,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

Georgina Kelly - One of the best experts on this subject based on the ideXlab platform.

  • effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, Georgina Kelly, Peter Hodgson
    Abstract:

    Abstract A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (eC,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (eC,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on eC,DSIT and eC,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, eC,DSIT and eC,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on eC,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

  • Ultrafine Ferrite Formation during hot strip rolling
    Materials Science and Technology, 2000
    Co-Authors: P J Hurley, Georgina Kelly, Peter Hodgson
    Abstract:

    A rolling process has been developed to produce ultrafine Ferrite in the surface layers of steel strip. Microscopic examination of the rolled steel revealed that the ultrafine Ferrite formed by mea...

Alireza Shokouhi - One of the best experts on this subject based on the ideXlab platform.

  • effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, Georgina Kelly, Peter Hodgson
    Abstract:

    Abstract A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (eC,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (eC,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on eC,DSIT and eC,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, eC,DSIT and eC,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on eC,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).

  • Effect of thermomechanical parameters on the critical strain for ultrafine Ferrite Formation through hot torsion testing
    Materials Science and Engineering: A, 2004
    Co-Authors: Hossein Beladi, Alireza Shokouhi, G.l Kelly, P.d Hodgson
    Abstract:

    A C–Mn–V steel was used to study ultrafine Ferrite Formation (1–3 μm) through dynamic strain-induced transFormation (DSIT) using hot torsion experiments. A systematic study determined the critical strain for the start of DSIT (C,DSIT), although this may not lead to a fully ultrafine microstructure. Therefore, the strain to produce an ultrafine Ferrite (UFF) as final microstructure (C,UFF) during deFormation was also determined. In addition, the effect of thermomechanical parameters such as deFormation temperature, prior austenite grain size, strain rate and cooling rate on C,DSIT and C,UFF has been evaluated. DSIT Ferrite nucleated on prior austenite grain boundaries at an early stage of straining followed by intragranular nucleation at higher strains. The prior austenite grain size affected the distribution of DSIT Ferrite nucleation sites at an early stage of transFormation and the subsequent coarsening behaviour of the grain boundary and intragranular Ferrite grains during post-deFormation cooling. Also, C,DSIT and C,UFF increased with an increase in the prior austenite grain size and deFormation temperature. The post-deFormation cooling had a strong effect not only on C,UFF but also the UFF microstructure (i.e. final Ferrite grain size and second phase characteristics).