نتایج جستجو برای: crystal grain size

تعداد نتایج: 754780  

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 2001

Journal: :Acta Materialia 2021

This work investigates the microstructure-property linkages in magnesium (Mg) with an emphasis on understanding interaction effects between grain size, texture, and loading orientation. A single crystal plasticity framework endowed experimentally informed micro Hall-Petch type relations for activation thresholds slip twinning is adopted to resolve polycrystalline microstructures over a broad te...

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2013

Journal: :international journal of marine science and engineering 0

the use of acoustic waves in researches related to sea water is of most importance among scientistsrecently. since these waves are the only waves, transmitted in water with lowest attenuation and high speed, they canbe used in many scientific fields. the main goal of this research is to better understand the physics and mechanismsof sound-seabed interaction, including acoustic penetration, prop...

2005
Zdeněk P. Bažant Zaoyang Guo Horacio D. Espinosa Yong Zhu Bei Peng

It is shown that the size effect recently observed by Espinosa et al., fJ. Mech. Phys. Solids 51, 47 s2003dg in pure tension tests on free thin metallic films can be explained by the existence of a boundary layer of fixed thickness, located at the surface of the film that was attached onto the substrate during deposition. The boundary layer is influenced by the epitaxial effects of crystal grow...

AISI 301 stainless steel is a frequently used metal, especially in high temperature demands and or in part with high corrosion risk. Thin spring steel plates can be used as expansions of heat furnaces insulation and variety of all other springs. The present study has assessed the effects of temperature and thermal treatment time span on the microstructure of stainless steel 301 to achieve elast...

2015
Michael Kimiecik J. Wayne Jones Samantha Daly

The dependence of grain orientation on stress-induced martensitic transformation in superelastic, polycrystalline Nickel-Titanium sheet was examined at the microstructural length scale. Full-field strains, indicative of transformation extent, were characterized in fields of view of nominally 100 μm x 100 μm using a custom combination of scanning electron microscopy with distortioncorrected digi...

Journal: :Physical review letters 2018
Caitlin E Cash Jeremy Wang Maya M Martirossyan B Kemper Ludlow Alejandro E Baptista Nina M Brown Eli J Weissler Jatin Abacousnac Sharon J Gerbode

We find that laser-induced local melting attracts and deforms grain boundaries in 2D colloidal crystals. When a melted region in contact with the edge of a crystal grain recrystallizes, it deforms the grain boundary-this attraction is driven by the multiplicity of deformed grain boundary configurations. Furthermore, the attraction provides a method to fabricate artificial colloidal crystal grai...

2004
Helmut Schaeben Marcus Apel Tobias Frank Marcin Iwanowski Stefan Zaefferer

3–dimensional (3d) automatic crystal orientation mapping (ACOM) allows to sample parallel 2d section raster images which represent the orientation of crystal grains. The fabric, i.e. the partition of the specimen into 3d crystal grains, can be approximated given its intersections with parallel planes provided by series of 2–dimensional raster orientation images. A method to model the 3d fabric ...

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