Results 91 to 100 of about 32,459 (292)

Grain Refinement During Severe Plastic Deformation and Similitude of Subgrain Formation: A Molecular Dynamics Study

Advanced Engineering Materials, EarlyView.
Molecular dynamics is used to investigate structure refinement during severe plastic deformation. The results show similitude with experimental data. Molecular dynamics simulations of severe plastic deformation of monocrystalline and polycrystalline samples by multiaxial compression of aluminum are carried out.
Roberto B. Figueiredo
wiley   +1 more source

The content of Fusarium mycotoxins, grain yield and quality of winter wheat cultivars under organic and conventional cropping systems

Plant, Soil and Environment, 2008
Nine cultivars of winter wheat were compared in organic and conventional crop rotation systems. Bread-making quality was evaluated using three parameters [thousand-kernel weight (TKW) in g, volume weight in g/l, protein content in %].
M. Váňová, K. Klem, P. Míša, P. Matušinsky, J. Hajšlová, K. Lancová   +5 more
doaj   +1 more source

Mixing Grains with Different Elongation in a Rotating Drums

, 2018
Mixing grains with different properties is a remarkably challenging process, relevant to many industrial applications. Rotating drums have been used extensively as model systems to study granular media flow and mixing and segregation. Numerous studies considered the mixing of grains with different sizes, but only few studies considered shape and ...
Piacenza C., Marconati M., Hare C., Santomaso A., Ramaioli M.   +4 more
openaire   +3 more sources

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

Advanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş, Mehmet Emin Demir, Sercan Özpınar   +2 more
wiley   +1 more source

The Relevance of Grain Dissection for Grain Size Reduction in Polar Ice: Insights from Numerical Models and Ice Core Microstructure Analysis

Frontiers in Earth Science, 2017
The flow of ice depends on the properties of the aggregate of individual ice crystals, such as grain size or lattice orientation distributions. Therefore, an understanding of the processes controlling ice micro-dynamics is needed to ultimately develop a ...
Florian Steinbach, Ernst-Jan N. Kuiper, Ernst-Jan N. Kuiper, Jan Eichler, Jan Eichler, Paul D. Bons, Martyn R. Drury, Albert Griera, Gill M. Pennock, Ilka Weikusat, Ilka Weikusat   +10 more
doaj   +1 more source

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

PRODUCTIVITY OF GRAIN CROPS AND SOIL FERTILITY DEPENDING ON FERTILIZERS, TYPE OF SOIL IN THE SYSTEM OF CROP ROTATION

Зерновое хозяйство России, 2018
Introduction of innovative technologies and crop rotation is agrotechnological and ecological basis for productivity growth and stability. Due to the proper crop rotation in the soil the amount of organic matter increases, the nutritional elements ...
I. N. Romanova, S. M. Knyazeva, S. N. Glushakov, S. E. Terentiev, М. I. Perepichay   +4 more
doaj   +2 more sources

Quasi-in-situ observing unusual grain orientation rotation during the process of static recrystallization grain growth in Mg–Zn-Gd alloy

Journal of Materials Research and Technology
The orientation (including the c axis orientation and crystal direction parallel to rolling direction) evolution of grown recrystallization grains during annealing at 250 °C for 45–180 min in Mg–Zn-Gd alloy was characterized by quasi-in-situ electron ...
Lingyu Zhao, Zhenhua Wang, Hong Yan, Zhongtang Wang, Quan Liu, Boyu Liu, Zhiwei Shan, Rongshi Chen   +7 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

A cooperative nano-grain rotation and grain-boundary migration mechanism for enhanced dislocation emission and tensile ductility in nanocrystalline materials

, 2019
Extensive experiments and molecular dynamics simulations have shown that stress-driven grain growth can greatly contribute to enhanced dislocation emission and tensile ductility in nanocrystalline metals.
Lu, W., Weng, G., Li, J., Liu, C.
core   +1 more source