Atomistic study of pyramidal slips in pure magnesium single crystal under nano-compression

2015 ◽  
Vol 95 (19) ◽  
pp. 2013-2025 ◽  
Author(s):  
Xiao-Zhi Tang ◽  
Ya-Fang Guo ◽  
Shuang Xu ◽  
Yue-Sheng Wang
Keyword(s):  
Single Crystal ◽  
Pure Magnesium ◽  
Atomistic Study

Lattice Thermal Conductivity of Fe-Cr Alloys With 〈001〉 Tilt Boundaries: An Atomistic Study

2014 ◽  
Author(s):  
Ishraq Shabib ◽  
Mohammad Abu-Shams ◽  
Mujibur R. Khan
Keyword(s):  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Single Crystal ◽  
Grain Boundaries ◽  
Lattice Thermal Conductivity ◽  
The Other ◽  
Tilt Boundaries ◽  
Cr Concentration ◽  
Non Equilibrium Molecular Dynamics ◽  
Atomistic Study

The objective of this study is to examine lattice thermal conductivity (κ) of Fe-Cr alloys containing different 〈001〉 tilt grain boundaries (GBs). The effects of Cr concentration (2 and 10%) and three different 〈001〉 tilt boundaries (Σ5{310}, Σ13{510}, and Σ17{530}) have been examined at 70K using the reverse non-equilibrium molecular dynamics (rNEMD) simulation technique. The results exhibit higher κ for Fe or Fe-Cr models with Σ5[310] GB. The values are 2–4% and 12–16% more than those of models with Σ13[510] and Σ17[530] GBs, respectively. Pure Fe single crystal models exhibit higher conductivities than Fe/Fe-Cr models with various Σ tilt boundaries. κ decreases 7–9% as GBs are introduced into the pure Fe single crystal models. On the other hand, the conductivities of Fe-Cr models are affected more by the Cr concentration than the presence of a particular GB. As 10% Cr is added into the system the conductivity decreases by 7.6–9.4% compared to the pure Fe models.

The mechanical behavior of single crystal and polycrystalline pure magnesium

2021 ◽  
Vol 163 ◽  
pp. 104078
Author(s):  
Minju Kang ◽  
Neha Dixit ◽  
Kavan Hazeli ◽  
Kelvin Xie ◽  
Kevin Hemker ◽  
...  
Keyword(s):  
Single Crystal ◽  
Mechanical Behavior ◽  
Pure Magnesium

Orientation Dependence of Flow Behavior of Mg Single Crystal

2016 ◽  
Vol 868 ◽  
pp. 95-99
Author(s):  
Ji Chan Kim ◽  
Seok Hong Min ◽  
Tae Kwon Ha
Keyword(s):  
Compressive Strength ◽  
Single Crystal ◽  
Single Crystals ◽  
Flow Behavior ◽  
Orientation Dependence ◽  
Bridgman Method ◽  
Pure Magnesium ◽  
Compression Tests ◽  
Ebsd Method ◽  
Electron Back Scattered Diffraction

Single crystals of pure magnesium were fabricated in this study by employing the modified Bridgman method. To determine the exact orientation of crystals, electron back scattered diffraction (EBSD) method was employed in this study. Dimensions of single crystals were 10 mm in diameter and 120 mm in length. Single crystals with near basal, pyramidal, and near prismatic orientations were obtained, on which hardness and compression tests were conducted. It has been revealed that hardness and the strength strongly depended on the orientation. While the hardness of pyramidal orientation was highest and that of near prismatic orientation was lowest, the compressive strength along near prismatic orientation appeared to be highest and that along prismatic orientation was lowest.

scholarly journals Ultra-Conductive Magnesium

2021 ◽  
Vol 13 (2) ◽  
pp. 35
Author(s):  
Fran De Aquino
Keyword(s):  
Electrical Conductivity ◽  
Single Crystal ◽  
Crystal Structures ◽  
Ac Conductivity ◽  
Electrical Current ◽  
Pure Magnesium ◽  
Magnesium Metal ◽  
Single Crystal Structures

The improvement of the electrical conductivity of usual metals is limited by the purity of the metal and the ability to grow single crystal structures. Also, it was observed that the AC conductivity of the metal increases when the frequency of the electrical current applied on the conductor increases. Here, we show that the pure Magnesium metal can exhibit an ultrahigh electrical conductivity when it is subjected to 360K temperature, and an electrical current with frequency of the order of 1GHz.

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