Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 34, Issue 14, Pages 1669-1678Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670836.2018.1471379
Keywords
Severe plastic deformation; mechanical properties; mild steel; interface sheet-constrained groove pressing; sheet; grain refinement; microstructure; hardness
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In this paper, a new severe plastic deformation (SPD) process entitled interface sheet-constrained groove pressing (ISCGP) as a new variant of conventional CGP has been developed for producing ultrafine-grained metallic materials. In this process, repetitive shear deformation is imposed into the sheet material by utilising symmetrically grooved die along with two interface sheet on both sides. To study the applicability, mild steel sheets were processed by both ISCGP and CGP processes, and mechanical and microstructural properties of the processed samples were investigated. The results show a considerable improvement in mechanical properties including hardness, yield strength, and ultimate tensile strength, though the ductility sacrifice was reduced. Comparing ISCGP and conventional CGP revealed interesting results, which are shown that ISCGP can result in better surface quality and ductility.
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