Microstructure Evolution during Continuous Frictional Angular Extrusion of Interstitial-Free Steel

Bo Yan; Shane Dover; Lan Jin; J. Shen; Yan Huang; S. Jiao

doi:10.4028/www.scientific.net/MSF.584-586.631

Paper Titles

Effect of Grain Refinement on the Mechanical Behaviour of Ferritic Steels: Evolution of Isotropic Hardening and Kinematic Hardening
p.605

Evolution of Texture in Ultra-Fine Grained Ferrite through Warm-Rolling and Intercritical Annealing
p.610

Study of the Plastic Deformation in Nanocrystalline and Ultrafine Iron and Carbon Steels
p.617

Ultrafine Grained Low Carbon Steels Processed by Severe Plastic Deformation
p.623

Microstructure Evolution during Continuous Frictional Angular Extrusion of Interstitial-Free Steel
p.631

Fracture Toughness Enhanced by Severe Plastic Deformation in Low Carbon Steel
p.637

Regularities of Deformation and Fracture of Steels Subjected to Equal Channel Angular Pressing and Thermal Processing
p.643

Microstructural Characterization of Low-Carbon Steel Processed by High Pressure Torsion and Annealing
p.649

Severe Plastic Deformation of a Bainitic Rail Steel
p.655

HomeMaterials Science ForumMaterials Science Forum Vols. 584-586Microstructure Evolution during Continuous...

Microstructure Evolution during Continuous Frictional Angular Extrusion of Interstitial-Free Steel

Abstract:

Interstitial-free steel sheets have been processed using a novel severe plastic deformation technique - continuous frictional angular extrusion (CFAE), in order to produce ultrafine grained structures. The deformation was carried out at room temperature and individual sheet specimens were repeatedly processed to various passes. An overall grain size of 200nm was achieved after 8 passes (or an equivalent total strain of 5.3). The present paper reports the evolution of microstructures during deformation, which were examined and characterized using electron backscatter imaging and high resolution EBSD in a field emission gun SEM. The mechanisms of grain refinement are discussed.