High pressure dependence of acoustic velocities, phonon frequencies and mechanical properties of Al1-xInxN ternary alloys

2021 ◽  
Author(s):  
Elkenany B Elkenany
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Pressure Dependence ◽  
Ternary Alloys ◽  
Acoustic Velocities

scholarly journals Pressure Dependence of Structural and Mechanical Properties of Single-Crystal Tungsten: A Molecular Dynamics Study

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1898
Author(s):  
Xuepeng Liu ◽  
Kezhong Xu ◽  
Hua Zhai
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
High Pressure ◽  
Single Crystal ◽  
Pressure Dependence ◽  
High Pressures ◽  
External Pressure ◽  
Uniaxial Tensile ◽  
Linear Lattice ◽  
Lattice Contraction

In the current study, molecular dynamics (MD) simulations were performed to study the pressure dependence of the structural and mechanical properties of single-crystal tungsten. The results show that single-crystal tungsten possesses noteworthy high-pressure stability and exhibits linear lattice contraction with increasing external pressure. Consistent with the results of the performed experiments, the predicted elastic moduli, including Young’s modulus, shear modulus, and bulk modulus, as well as Poisson’s ratio and Pugh’s modulus ratio, show a clear increasing trend with the increase in pressure. Under uniaxial tensile loading, the single-crystal tungsten at high pressures experiences a phase transition from BCC to FCC and other disordered structures, which results in a stripe-like morphology in the tungsten crystal. These results are expected to deepen our understanding of the high-pressure structural and mechanical behaviors of tungsten materials.

Mechanical properties of clays at high pressure

1980 ◽  
Vol 85 (B3) ◽  
pp. 1462-1468 ◽  
Author(s):  
Chi-Yuen Wang ◽  
Nai-Hsien Mao ◽  
Francis T. Wu
Keyword(s):  
Mechanical Properties ◽  
High Pressure

Measured temperature and pressure dependence of Vp and Vs in compacted, polycrystalline sI methane and sII methane–ethane hydrate

2003 ◽  
Vol 81 (1-2) ◽  
pp. 47-53 ◽  
Author(s):  
M B Helgerud ◽  
W F Waite ◽  
S H Kirby ◽  
A Nur
Keyword(s):  
High Pressure ◽  
Shear Wave ◽  
Pressure Dependence ◽  
Gas Hydrate ◽  
Pressure Vessel ◽  
Wave Speed ◽  
Measured Temperature ◽  
Shear Wave Speed ◽  
Temperature And Pressure ◽  
Fixed End

We report on compressional- and shear-wave-speed measurements made on compacted polycrystalline sI methane and sII methane–ethane hydrate. The gas hydrate samples are synthesized directly in the measurement apparatus by warming granulated ice to 17°C in the presence of a clathrate-forming gas at high pressure (methane for sI, 90.2% methane, 9.8% ethane for sII). Porosity is eliminated after hydrate synthesis by compacting the sample in the synthesis pressure vessel between a hydraulic ram and a fixed end-plug, both containing shear-wave transducers. Wave-speed measurements are made between –20 and 15°C and 0 to 105 MPa applied piston pressure. PACS No.: 61.60Lj

Highly Dense Amorphous Si2 BC3 N Monoliths with Excellent Mechanical Properties Prepared by High Pressure Sintering

2015 ◽  
Vol 98 (12) ◽  
pp. 3782-3787 ◽  
Author(s):  
Bin Liang ◽  
Zhihua Yang ◽  
Jiancun Rao ◽  
Delong Cai ◽  
Xiaoming Duan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Sintering
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