Zobrazeno 1 - 9
of 9
pro vyhledávání: '"M. H. Sheikh-Ansari"'
Publikováno v:
JOM. 71:4696-4704
In the present study, restoration and texture evolution mechanisms were investigated during the semi-solid hot compression of AA7075 aluminum alloy using electron backscatter diffraction and x-ray diffraction analysis. The results indicated that the
Publikováno v:
Applied Mathematical Modelling. 70:128-138
A new constitutive model is proposed to investigate the shear localization in semisolid materials. It is based on the development of a viscosity-type equation to express the homogeneous part of the semisolid flow curve. An instability analysis was pe
Publikováno v:
International Journal of Material Forming. 12:703-716
Semi-solid materials undergo strain localization and shear band formation as a result of the irregular (local) rearrangement of globular particles. Concerning the formation of a solid network, a granular constitutive relation was developed to incorpo
Publikováno v:
Mechanics Research Communications. 89:1-5
Considering the granular nature of the semi-solid deformation, a new criterion for the onset of instability in the semi-solid materials was developed, which is capable of incorporating the thixotropic behavior, Reynold's dilatancy and the internal fr
Publikováno v:
Continuum Mechanics and Thermodynamics. 30:805-815
A theoretical framework of the shear localization analysis was developed for semi-solid materials taking into account a non-equilibrium relationship between viscous deformation, pressure and interfacial surface energy. Considering a shear layer model
Publikováno v:
International Journal of Material Forming. 11:165-173
A new analytical instability criterion based on a finite deformation continuum analysis was developed to identify the condition associated with the unstable flow during the semi-solid deformation. The proposed criterion can be used to calculate the o
Publikováno v:
Applied Mechanics and Materials. :77-81
In this study, medium carbon low alloy steel was used to obtain bainitic structures. The lower bainite and tempered martensite-lower bainite structures were achieved by isothermal austempering and up quenching treatment, respectively. Based on the re
Publikováno v:
Materials Research Express. 4:106516
Autor:
M H Sheikh-Ansari, M Aghaie-Khafri
Publikováno v:
Materials Research Express; Oct2017, Vol. 4 Issue 10, p1-1, 1p