نتایج جستجو برای: ultrafine grains
تعداد نتایج: 31150 فیلتر نتایج به سال:
This paper investigates the effects of laser heated cold spray on microstructure and mechanical properties sprayed 304L stainless steel (SS304L). In this study, three samples were made by depositing SS304L powder onto substrates using (CS) with a nitrogen carrier gas. A was used to heat surface two deposits after 750 ℃ 950 ℃, resulting studied. Electron backscatter diffraction (EBSD) X-ray line...
Ti15Mo alloy was subjected to two techniques of intensive plastic deformation, namely high pressure torsion and rotary swaging at room temperature. The imposed strain resulted in the formation an ultrafine-grained structure both deformed conditions. Detailed inspection microstructure revealed presence grains with a size around 100 nm after also contained elongated length up 1 µm. Isothermal age...
The evolution of texture was discussed during the formation of ultra-fine and nano grains in a magnesium alloy severely deformed through accumulative back extrusion (ABE). The microstructure and texture obtained after applying multiple deformation passes at temperatures of 100 and 250°C were characterized. The results showed that after single ABE pass at 100°C an ultrafine/nano grained microstr...
Acceptability of a reformulated grain-based food: Implications for increasing whole grain consumption A. Manickavasagan a,∗, M. Reicks b, V. Singh a, A. Sawsana a, A.M. Intisar a, R. Lakshmy a a Sensory and Food Preparation Laboratory, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud, P.O.Box 34, Pin 123, Oman b Department of Food Science and Nutrition, College of...
The aim of this work is to investigate the interaction basal dislocations and twin boundaries with ultrafine disk-shaped precipitates at atomic scale in peak-aged Mg-1Mn-1Nd-3Zn (wt.%) alloy. With that goal, an experimental approach consisting on micropillar compression two grains oriented favorably for slip tensile activation, respectively, as well high resolution transmission electron microsc...
The bimodal microstructure, which comprises ultrafine grains (UFGs) forming along the melt pool boundary and relatively coarse inside pool, is a characteristic of Sc-Zr-modified Al–Mg-based alloy (Scalmalloy) microstructure manufactured using laser powder bed fusion (LPBF). Focusing on this microstructural feature, we investigated improvement in mechanical properties LPBF-fabricated Scalmalloy ...
Alumina toughened zirconia (ATZ) nanoceramics accompanied with high-strength, high-toughness and high-hardness were prepared by in-situ nanoprecipitation from using solid solution micro-powders. The submicron-sized Al2O3 (∼445 nm) ZrO2 (∼361 grains contained low-density precipitated nano-ZrO2 (∼35 nano-Y4Al2O9 (YAM, ∼87 particles, respectively, making high-performance nano-ATZ ceramics ultrafin...
Metallographic, X-ray diffraction and magnetometric analysis were used to study the regularities of martensitic transformation in melt-spun ribbons of a Fe - 28 wt. % Ni - 2.1 wt. % Ti - 2 wt. % Al - 0.05 wt. % C alloy. The substantial differences in volume fractions of the martensite phase in local regions of thin melt-spun ribbons of the alloy are related to the size effect of the transformat...
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