نتایج جستجو برای: initial microstructure

تعداد نتایج: 407443  

Journal: :international journal of iron & steel society of iran 2011
s. a. rounaghi a. r. kiani-rashid

in this research, graphitization transformation of a commercial hypereutectoid steel called ck100 was studied by the dilatometric experiments at the range of 600 – 700 °c from prior martensitic structure. also the effect of quenching media on the initial graphitization time and completion of transformation has been discussed. also, graphitization transition from the different prior microstructu...

2005
Samuel Forest

The idea of a material body endowed with both translational and rotational degrees of freedom stems from the seminal work of the Cosserat brothers (Cosserat and Cosserat, 1909). A triad of orthonormal directors (d )i=1,3 is associated to the microstructure of each material point. The material transformation describes the displacement u of the material point and the rotation R∼ with respect to t...

2012
S. N. Doddamane C. Sampangi P. W. Todd

Simulations of magnetic microstructure in elliptical Permalloy elements used for controlled motion of magnetic particles are discussed. The saturating field of the elliptical elements was studied with respect to lateral dimensions for one-vortex, cross-tie, diamond and double-diamond states as initial zero-field domain configurations. With aspect ratio of 1:3 the short axis was varied from 125 ...

2003
Jun-Ho Jeong Jonathan A. Dantzig Nigel Goldenfeld

We study the growth of single dendrites from a small initial seed in an undercooled melt in the presence of a forced flow. Three-dimensional models are constructed, in which the solidification is computed using an adaptive finite element mesh and a phase-field method. We compare our calculations with available theories and experiments, and conclude that there are significant open questions rema...

2017
J. D. Bernard J. B. Jordon M. F. Horstemeyer H. El Kadiri Alan A. Luo J. Baird David Lamb

The fatigue properties of an extruded Mg–3Al–0Mn magnesium alloy component were evaluated experimentally. Fully reversed, strain control fatigue tests were conducted on specimens extracted from regions with a varying grain size and texture. Scanning electron microscopy was employed to establish structure–property relations between microstructure and cyclic damage. Relations were drawn between m...

Journal: :journal of dentistry, tehran university of medical sciences 0
mh. fathi v. mortazavi

statement of problem: many attempts have been made in order to evaluate the amalgam corrosion behavior as an indicator of biocompatibility. purpose: the aim of this study was to evaluate and compare the initial corrosion of four different brands of dental amalgams. materials and methods: four different types of commercial high copper dental amalgam were studied. a special mold was used and twen...

2013
Abhishek Kumar

After the initial molding of the ceramic, whether by slip casting or dry pressing, it is still necessary to densify the compacted powder samples (green bodies) to form a continuous 3D structure and thus to get ceramic pieces appropriate for the selected application. Usually this is done by a sintering process which is a consolidation and densification step of the granular compact through the ac...

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