Bulk Nanostructured Materials with Multifunctional by I. Sabirov, N.A. Enikeev, M.Yu. Murashkin, R.Z. Valiev

By I. Sabirov, N.A. Enikeev, M.Yu. Murashkin, R.Z. Valiev

This ebook provides a multifunctional method of the layout of bulk nanostructured metals via critical plastic deformation (SPD). fabrics engineering has commonly concerned identifying an appropriate fabric for a given program. even if, smooth engineering usually calls for fabrics with a collection of multifunctional, usually conflicting houses: improved mechanical homes must be mixed with more advantageous actual (electrical, magnetic, etc.) and/or chemical (corrosion resistance, biocompatibility) houses. So disparate fabrics homes must be engineered and optimized at the same time. those specifications have created a paradigm shift within which the classical fabrics choice process is changed by means of layout of fabric microstructures to accomplish yes functionality specifications, topic to constraints on person homes resembling power, conductivity, and corrosion resistance. Written by means of researchers on the leading edge of this new fabrics layout technique, the current quantity presents a finished advent to multifunctional layout of bulk nanostructured fabrics, with functions starting from hydrogen garage to development engineering.

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Mater Sci. 45, 103 (2000) 17. : Using high-pressure torsion for metal processing: fundamentals and applications. Prog. Mater Sci. 53, 893 (2008) 18. : Bulk Nanostructured Materials: Fundamentals and Applications. Wiley, New York (2014) 19. : Using X-ray microdiffraction to determine grain sizes at selected positions in disks processed by high pressure torsion. Mater. Sci. Eng. A 444, 153 (2007) 20. : Producing bulk ultrafine-grained materials by severe plastic deformation. JOM 58(4), 33 (2006) 21.

A lower crack growth rate and a lower fatigue limit due to texture softening and reduction of crack nucleation resistance were reported for the ECAP-processed AZ31 alloy [113]. 3 Strategies to Increase Fatigue Properties of Nanostructured Metallic Materials Analysis of literature on fatigue performance of nanostructured metallic materials shows that intelligent microstructural design is the main approach to improve their fatigue behavior [80]. Microstructure of these materials can be tuned via optimization of the SPD processing parameters, such as temperature, strain, strain rate, 48 3 Multifunctional Properties of Bulk Nanostructured Metallic Materials Fig.

996 %) Cu was processed at room temperature using ECAP with a 90° clockwise rotation around the billet axis between consecutive passes in route BC [54]. The strength and ductility were measured by uniaxial tensile tests, and the resulting engineering stress–strain curves are shown in Fig. 9 for the Cu samples tested at room temperature in the initial coarse-grained condition and in three processed states [54]. It is apparent that the initial coarse-grained Cu with a grain size of about 30 µm has a very low yield stress with significant strain hardening and a large elongation to failure.

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