Constrained Groove Pressing (CGP): Die Design, Material Processing and Mechanical Characterization
نویسندگان
چکیده
منابع مشابه
Mechanical Behaviour of Pure Aluminum Processed by Constrained Groove Pressing
In recent years, the fabrication of bulk materials with ultra fine grain sized materials processed by SPD methods. Different techniques have been used to introduce large plastic strains in to bulk metals such as Equal Channel Angular Pressing (ECAP) [1-3], Accumulative Roll Bonding (ARB) [4-7], Repetitive Corrugation and Straitening (RCS) [8,9], Constrained Groove Pressing (CGP) [5] and Constra...
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Computerized image processing has been studied intensively for many years [32]. Because of the inherent complexity of the problem, stochastic optimization algorithms, including evolutionary algorithms, have been applied to improve existing image processing methods and develop new algorithms [4]. Section 6.2 deals with the automatic design of low-level image filters, ones comparable in quality t...
متن کاملExperimental and Computational Simulation of Producing Ultra-fine Grain Structure Processed by Cgp
In this research the constrained groove pressing (CGP) process as a severe plastic deformation (SPD) method was applied on commercially pure aluminum plates. According to the principle of CGP, a material is subjected to repetitive shear deformation by utilizing asymmetrically grooved dies and flat dies which are constrained by a channel. Each complete groove pressing pass consists of four press...
متن کاملExperimental and Numerical Investigation of Mechanical Properties in the Ultrasonic Assisted constraint groove pressing process of copper sheets
In this study, constraint groove pressing (CGP) process and ultrasonic assisted CGP (UCGP) process were investigated on the process forces, mechanical properties of the sheet, including hardness and tensile tests and grain size. Pure copper sheets were used as samples in this research. Samples were tested both with and without ultrasonic vibrations for mechanical properties and grain size up to...
متن کاملMulti-objective optimization of geometrical parameters for constrained groove pressing of aluminium sheet using a neural network and the genetic algorithm
One of sheet severe plastic deformation (SPD) operation, namely constrained groove pressing (CGP), is investigated here in order to specify the optimum values for geometrical variables of this process on pure aluminium sheets. With this regard, two different objective functions, i.e. the uniformity in the effective strain distribution and the necessary force per unit weight of the specimen, are...
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ژورنال
عنوان ژورنال: Fluid Dynamics & Materials Processing
سال: 2019
ISSN: 1555-2578
DOI: 10.32604/fdmp.2019.03923