Strength Evaluation of Amorphous Metal with Dispersed Nanocrystalline Particles by Molecular-dynamics Simulation

2004 ◽  
Vol 2004.17 (0) ◽  
pp. 27-28
Author(s):  
Ryosuke MATSUMOTO ◽  
Michihiko NAKAGAKI
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Amorphous Metal ◽  
Dynamics Simulation ◽  
Strength Evaluation ◽  
Nanocrystalline Particles

Molecular Dynamics Simulation of Crystallization in an Amorphous Metal during Shear Deformation

2000 ◽  
Vol 39 (Part 2, No. 6B) ◽  
pp. L611-L613 ◽  
Author(s):  
Ryuichi Tarumi ◽  
Akio Ogura ◽  
Masayuki Shimojo ◽  
Kazuki Takashima ◽  
Yakichi Higo
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Shear Deformation ◽  
Amorphous Metal ◽  
Dynamics Simulation

Molecular-dynamics simulation of crack growth with crystallization in amorphous metal

2004 ◽  
Vol 2004.57 (0) ◽  
pp. 113-114
Author(s):  
Ryosuke MATSUMOTO ◽  
Akihiro NAKATANI ◽  
Hiroshi KITAGAWA ◽  
Michihiko NAKAGAKI
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Crack Growth ◽  
Amorphous Metal ◽  
Dynamics Simulation

Molecular Dynamics Simulation of Nano-Sized Crystallization During Plastic Deformation in an Amorphous Metal

2000 ◽  
Vol 634 ◽  
Author(s):  
R. Tarumi ◽  
A. Ogura ◽  
M. Shimojo ◽  
K. Takashima ◽  
Y. Higo
Keyword(s):  
Molecular Dynamics ◽  
Plastic Deformation ◽  
Shear Stress ◽  
Phase Transformation ◽  
Molecular Dynamics Simulation ◽  
Shear Strain ◽  
Orientation Relationship ◽  
Crystalline Structure ◽  
Amorphous Metal ◽  
Dynamics Simulation

ABSTRACTAn NTP ensemble molecular dynamics simulation was carried out to investigate the mechanism of nano-sized crystallization during plastic deformation in an amorphous metal. The atomic system used in this study was Ni single component. The total number of Ni atoms was 1372. The Morse type inter-atomic potential was employed. An amorphous model was prepared by a quenching process from the liquid state. Pure shear stresses were applied to the amorphous model at a temperature of 50 K. At applied stresses of less than 2.4GPa, a linear relation between shear stress and shear strain was observed. However, at an applied shear stress of 2.8 GPa, the amorphous model started to deform significantly until shear strain reached to 0.78. During this deformation process, phase transformation from amorphous into crystalline structure (fcc) was observed. Furthermore, an orientation relationship between shear directions and crystalline phase was obtained, that is, two shear directions are parallel to a (111) of the fcc structure. This crystallographic orientation relationship agreed well with our experimental result of Ni-P amorphous alloy. Mechanisms of phase transformation from amorphous into crystalline structure were discussed.

scholarly journals Molecular Dynamics Simulation on Anelasticity under Tensile and Shearing Stresses in Single Component Amorphous Metal

2005 ◽  
Vol 46 (12) ◽  
pp. 2875-2879 ◽  
Author(s):  
Kazutaka Fujita ◽  
Junji Ohgi ◽  
Vasek Vitek ◽  
Tao Zhang ◽  
Akihisa Inoue
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Amorphous Metal ◽  
Single Component ◽  
Dynamics Simulation
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