Tensile Property of Submicrocrystalline Pure Fe Produced by HPT-Straining

Yoshikazu Todaka; Yoshii Miki; Minoru Umemoto; Chao Hui Wang; Koichi Tsuchiya

doi:10.4028/www.scientific.net/MSF.584-586.597

Paper Titles

Twinning, Dislocations and Grain Size in NanoSPD Materials Determined by X-Ray Diffraction
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Microstructure and Mechanical Properties of Commercial Purity HIPed and Crushed Aluminum
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Texture and Grain Boundary Character Distribution during Equal Channel Angular Extrusion of some Two-Phase Copper Alloys
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Microstructure Development and Precipitation Effects in Ultra Fine Grained Mg-3Tb-2Nd Alloy Prepared by High Pressure Torsion
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Tensile Property of Submicrocrystalline Pure Fe Produced by HPT-Straining
p.597

Effect of Grain Refinement on the Mechanical Behaviour of Ferritic Steels: Evolution of Isotropic Hardening and Kinematic Hardening
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Evolution of Texture in Ultra-Fine Grained Ferrite through Warm-Rolling and Intercritical Annealing
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Study of the Plastic Deformation in Nanocrystalline and Ultrafine Iron and Carbon Steels
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Ultrafine Grained Low Carbon Steels Processed by Severe Plastic Deformation
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HomeMaterials Science ForumMaterials Science Forum Vols. 584-586Tensile Property of Submicrocrystalline Pure Fe...

Tensile Property of Submicrocrystalline Pure Fe Produced by HPT-Straining

Abstract:

The microstructure and the mechanical properties of pure Fe after HPT-straining at a rotation-speed of 0.2 rpm under a compression pressure of 5 GPa were investigated. The elongated grains with 300 nm thick and 600 nm long were observed at r = 1.5 mm away from the disk center regions after HPT-straining for 5 turns ( εeq = 45). The obtained Vickers microhardness in the submicrocrystalline Fe after 5 turns was around Hv 3.6 GPa. The engineering tensile strength and total elongation of the HPT-processed Fe for 10 turns were 1.9 GPa and 30 %. These facts suggest that HPT-straining leads to significant refinement of microstructure and increase in strength with good ductility.