A Cyclic Forward-Backward Extrusion Process As a Novel Severe Plastic Deformation for Production of Ultrafine Grains Materials
A new severe plastic deformation (SPD) process based on a cyclic forward-backward extrusion (CFBE) is introduced for producing ultrafine grains in bulk alloys. CFBE was applied to AA1050 aluminum alloy and produced ultra-high plastic strains without any geometrical change. After only one cycle of CFBE, transmission electron microscopy (TEM) showed a significant grain refinement from 47 µm to about 1 µm. Also a substantial increase in the hardness, from 25 Hv to 47-52 Hv, was recorded by microhardness tests after one cycle of CFBE.
H. Alihosseini et al., "A Cyclic Forward-Backward Extrusion Process As a Novel Severe Plastic Deformation for Production of Ultrafine Grains Materials," Materials Letters, vol. 68, pp. 204-208, Elsevier, Feb 2012.
The definitive version is available at https://doi.org/10.1016/j.matlet.2011.10.037
Materials Science and Engineering
Keywords and Phrases
Bulk alloys; Extrusion process; Geometrical changes; Microhardness tests; Severe plastic deformations; Ultra fine grain; Ultra-high; Ultrafine grains materials, Aluminum; Extrusion; Grain refinement; Microhardness; Plastic deformation; Transmission electron microscopy, Aluminum alloys; Cyclic extrusion; TEM; Ultrafine grain
International Standard Serial Number (ISSN)
Article - Journal
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