The influences of initial grain size (IGS) with 20 µm and 50 on the hot flow behavior microstructural changes pure copper were investigated using compression tests at a temperature range 623–1073 K strain rate 0.001–0.1 s?1. effects critical stress corresponding studied based internal external processing parameters. decreased increasing decreasing rate. investigation results microstructure true...

The evolution of strain hardening behavior the Fe50(CoCrMnNi)50 medium-entropy alloy as a function fraction recrystallized microstructure and grain size was studied using Hollomon Ludwigson equations. specimens under study were partially recrystallized, fully with ultrafine-grained microstructure, coarse grains. yield strength decreases steadily increases due to recovery process Hall–Petch effe...

In this paper, results of an investigation on the strain hardening responses of superalloy MP35N with two average grain sizes of 38 and 1 μm, during room temperature tensile testing are reported. The microstructural evolution of the deformed samples was studied using optical and transmission electron microscopy (TEM) techniques. The strain hardening behavior of the 38 μm material was rather sim...

We examined differences in the radioactive characteristics among the main minerals forming granite materials. Using a non-toxic high-density agent, minerals were separated from rock (granite-gneiss) and soil (weathered granite) samples. The natural radioactivity ((238)U and (226)Ra) and radon emanation fraction of the minerals were then studied by gamma-ray spectrometry. The radon emanation fra...

the sarghaye-sarnish watershed, with elongated shape and about 70.654 km2 area, is located in south of mashhad. sarghaye and sarnish rivers are the main ones in this watershed. the purpose of this study is to investigate grain size varietions based in sedimentary links and its relation to textural parameters such as sorting, skewness and kurtosis, as well as identification of sedimentary lithof...

Microstructural changes during laser welding and laser surface treatment has been regarded by many researchers. Most researches have focused on studying the effect of various process parameters on the size and microstructure of the heat affected zone. But some studies show that the initial microstructure of the base metal can also affect the heat affected zone dimensions and final microstructur...

The distribution of grain size parameters along 11 km stretch of the beach sediments between Karikal and Nagore, reveals that the mean grain size exhibits a marked decreasing trend on either side of the mouth of the Tirumalairajanar River which flow from west to east. The sediments are mainly of medium to coarse grained, moderately sorted, near-symmetrical skewed to fine skewed and leptokurtic ...

Due to the ease of implementation and the alleviation of memory bottleneck effect, NUMA system with Remote Access Cache (RAC) has dominated multiprocessor systems for the past several years. In this paper, we suggest a Multi-Grain RAC to adaptively control the RAC line size for each application behavior. We simulate the NUMA systems with the Multi-Grain RAC using MINT, an event-driven memory hi...

this study was carried out to determine some mechanical properties of barley seed including deformation, rapture force, rapture energy and toughness as a function of moisture content (10.5%, 12.5%, 14.5% , 16.5%, db), loading rate (5, 15, 25, 35 mm.min-1) and grain size (small, medium, large). tests were performed at 7 replications by the means of a factorial base plot experiment. the results s...