Results 31 to 40 of about 8,749,731 (254)
The influence of nanoparticles on dendritic grain growth in Mg alloys
Acta Materialia, 2018 Melt processing offers a cost effective method for producing metal matrix nanocomposite (MMNC) components; however, the influence of nanoparticles on the evolving microstructure during solidification is still not well understood.
E. Guo +7 more
semanticscholar +1 more source
Grain growth and yield potential of wheat genotypes under late sown heat stressed condition
Fundamental and Applied Agriculture, 2019 Four wheat genotypes (BARI gom 25, BARI gom 26, BAW 1135 and Pavon 76) were sown at different dates (29 November, 5, 16, 23 and 30 December respectively) to evaluate genotypic differences imposed by late seeded heat stress condition.
Joyanti Ray, Jalal Uddin Ahmed
doaj +1 more source
Ultrasonic Welding of Nickel with Coarse and Ultrafine Grained Structures
Metals, 2021 Solid state joints of samples of coarse-grained (CG) and ultrafine-grained (UFG) nickel have been obtained for the first time using spot ultrasonic welding (USW).
Elvina R. Shayakhmetova +2 more
doaj +1 more source
Nanocrystal seeding: A low temperature route to polycrystalline Si films [PDF]
, 1994 A novel method is presented for growth of polycrystalline silicon films on amorphous substrates at temperatures of 540–575 °C. Grain nucleation and grain growth are performed in two steps, using Si nanocrystals as nuclei ("seeds").
Chess, C. A., Gates, S. M., Heath, J. R.
core +1 more source
Structural Stability and Performance of Noble Metal-Free SnO2-Based Gas Sensors
Biosensors, 2012 The structural stability of pure SnO2 nanoparticles and highly sensitive SnO2-SiO2 nanocomposites (0–15 SiO2 wt%) has been investigated for conditions relevant to their utilization as chemoresistive gas sensors. Thermal stabilization by SiO2 co-synthesis
Antonio Tricoli
doaj +1 more source
Effect of High Pressure Spark Plasma Sintering on the Densification of a Nb-Doped TiO2 Nanopowder
Ceramics, 2020 Sintering under pressure by means of the spark plasma sintering (SPS) technique is a common route to reduce the sintering temperature and to achieve ceramics with a fine-grained microstructure.
Alexandre Verchère +8 more
doaj +1 more source
Grain boundary saturation and grain growth
Scripta Materialia, 2004 Abstract In nanoscale alloys with strong segregation tendency, the grain size at metastable thermodynamic equilibrium is determined by the grain boundary energy, the enthalpy change of grain boundary segregation, and the solute excess of an equivalent grain boundary monolayer at saturation.
Liu, F., Kirchheim, Reiner
openaire +2 more sources
Metals, 2020 The mechanisms responsible for the deformation of nanocrystalline materials are not well understood although many mechanisms have been proposed. This article studies the room-temperature stress-strain relations of bulk nanocrystalline silver deformed in ...
Baoru Sun, Tongde Shen
doaj +1 more source
Journal of Aeronautical Materials, 2023 In order to investigate the distribution of temperature field in directionally solidified DZ4125 columnar superalloy, and to study the effects of different withdrawl rates on the changes of temperature gradient and mushy zone, the directional ...
LIU Guohuai +6 more
doaj +1 more source
The Effect of Strain Rate on the Deformation Processes of NC Gold with Small Grain Size
Crystals, 2020 The strength of nanocrystalline (NC) metal has been found to be sensitive to strain rate. Here, by molecular dynamics simulation, we explore the strain rate effects on apparent Young’s modulus, flow stress and grain growth of NC gold with small size. The
Jialin Liu +4 more
doaj +1 more source