نتایج جستجو برای: thermomechanical treatment
تعداد نتایج: 1397447 فیلتر نتایج به سال:
The mechanical properties and microstructural developments of 321 stainless steel during thermomechanical process were investigated. The repetitive cold rolling and subsequent annealing were conducted to achieve nanocrystalline structure in an AISI 321 stainless steel. Heavily cold rolling at −20°C was conducted to form martensite in metastable austenitic steel. The process was followed by anne...
This paper reports the use of molecular dynamics simulations to study the thermomechanical properties of an epoxy molding compound formed by curing tri/tetra-functionalized EPN1180 with Bisphenol-A. An interactive crosslinking-relaxation methodology is developed to construct the simulation cell. This crosslinking-relaxation methodology allows the construction of highly crosslinked polymer netwo...
An investigation has been carried out on the texture of Ti-44Ni-5Cu (at %) shape memory alloy wire. The texture of the B2 and monoclinic phases has been determined as a function of the degree of cold deformation during the drawing process and the number of cycles on thermomechanical cycling. After cold drawing and anlealing (823 K, 180 s ) under tensile stress, the [110], [li~] [loll and [loll ...
Abstract: The thermo-elastic fracture problem and equations are established for aluminium alloy Metal Inert Gas (MIG) welding, which include a moving heat source and a thermoelasticity equation with the initial and boundary conditions for a plate structure with a crack. The extended finite element method (XFEM) is implemented to solve the thermo-elastic fracture problem of a plate structure wit...
Nonequilibrium thermodynamics (NET) investigates processes in systems out of global equilibrium. On a mesoscopic level, it provides a statistical dynamic description of various complex phenomena such as chemical reactions, ion transport, diffusion, thermochemical, thermomechanical and mechanochemical fluxes. In the present review, we introduce a mesoscopic stochastic formulation of NET by analy...
In this paper, transient thermomechanical stress intensity factors for functionally graded cylinders with complete internal circumferential cracks are obtained using the weight function method. The finite difference method is used to calculate the time dependent temperature distribution and thermal stresses along the cylinder thickness. Furthermore, finite element analysis is performed to deter...
" Thermomechanical behavior at the nanoscale and size effects in shape memory alloys. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Shape memory alloys (SMA) und...
The thermomechanical warpage or vertical deflection of microelectronic packages due to temperature change is caused by the mismatch in the coefficients of thermal expansion between vertically asymmetric layers of materials. The structure of many microelectronic packages may be characterized as a multi-layered plate consisting of two regions, that of a die area and a mold area. Physical observat...
The influence of additional thermal and thermomechanical treatment PA6/MMT nanocomposites obtained from the formic acid solution on their heat resistance technological properties was investigated. Thermal analysis established that heating nanocomposite to a temperature 250 ºС treating it capillary plastometer IIRT at 230 increases degree crystallinity samples. It is shown additionally treated a...
-Thermodynamic foundations of the thermal entropy production are rested on the concept of lost heat, (Q/T)6T. The thermomechanical entropy production is shown to be in terms of the lost heat and the lost work as
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