Topic
Ductility
About: Ductility is a research topic. Over the lifetime, 23427 publications have been published within this topic receiving 420674 citations.
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TL;DR: In this article, the role of die geometry is investigated by studying the effects of the produced sheet thickness ( ) on the material properties of commercial pure aluminum (Al1050) processed by PFM.
Abstract: A new severe plastic deformation (SPD) process called plastic flow machining (PFM) was recently proposed to produce thin sheets with gradient structures. In the present paper, the role of the die geometry is investigated by studying the effects of the produced sheet thickness ( ) on the material properties of commercial pure Aluminum (Al1050) processed by PFM. The obtained experimental results show that an increase of in the range of 0.65 to 1.5 mm improved the formation efficiency of the sheet. Microstructures of the produced sheets show gradient structures with an average grain size varying from 0.8 to 3.81 µm across the sheet thickness. Both experiments and finite element (FE) simulations document that the degree of the gradient in the microstructure became more significant when was increased. Sheets produced by PFM exhibited a better strength-ductility balance than sheets obtained in other SPD processes. Tensile strength of 160–175 MPa and total ductility of 18–25% were obtained for the processed samples after PFM. A rise of from 0.65 to 1.5 mm lowered the strength but enhanced the ductility of the produced sheet, which is due to the coarser microstructure at larger values of .
9 citations
TL;DR: In this article, the microstructure and mechanical properties of the composites were studied, and the strengthening mechanism was determined, which showed that the key reinforcing and toughening mechanisms were due to the dislocation defects and stacking faults in the samples, which consume more fracture energy during crack propagation and comprehensively improve the strength and toughness of the composite.
9 citations
TL;DR: In this paper, the experimental and theoretical study on axial compressive behavior of fiber reinforced polymer (FRP) confined concrete-filled thin-walled steel tube (CFT) stub columns with high-strength materials is presented.
9 citations
TL;DR: In this article, the authors report that the addition of TiB2 particles (TiB2p) not only enhances the strength of the rheocast hypereutectic Al 17Si alloy, but also exerts a positive effect on its ductility.
9 citations
13 Jan 2022-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: Ferrite and austenite duplex stainless steel with heterogeneous lamella structure was fabricated by severe cold-rolling and short-time annealing as mentioned in this paper, which exhibited superior cryogenic mechanical properties with a tensile strength of ∼1650 MPa and an ultimate tensile strain of ∼30%.
Abstract: Ferrite and austenite duplex stainless steel with heterogeneous lamella structure was fabricated by severe cold-rolling and short-time annealing. The processed steel exhibited superior cryogenic mechanical properties with a tensile strength of ∼1650 MPa and an ultimate tensile strain of ∼30%. The excellent combination of cryogenic strength and ductility was attributed to fine grain size, nanotwins, back-stress hardening, and deformation-induced martensitic transformation.
9 citations