scholarly journals Mechanical Properties of Amorphous Metal with Dispersed Nanocrystalline Particles: Molecular Dynamics Study on Crystal Volume Fraction and Size Effects

2006 ◽  
Vol 49 (4) ◽  
pp. 513-521 ◽  
Author(s):  
Ryosuke MATSUMOTO ◽  
Michihiko NAKAGAKI
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Size Effects ◽  
Volume Fraction ◽  
Amorphous Metal ◽  
Nanocrystalline Particles ◽  
Crystal Volume

Molecular Dynamics Study on Mechanical Properties and Fracture in Amorphous Metal

AIAA Journal ◽  
2000 ◽  
Vol 38 (4) ◽  
pp. 695-701 ◽  
Author(s):  
Keiko Nakatani ◽  
Akihiro Nakatani ◽  
Yoshihiko Sugiyama ◽  
Hiroshi Kitagawa
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Amorphous Metal

Quasicontinuum Simulation of Uniaxial Tension of Single Crystal Copper Nanowire

2011 ◽  
Vol 694 ◽  
pp. 200-204
Author(s):  
Xing Lei Hu ◽  
Ying Chun Liang ◽  
Jia Xuan Chen ◽  
Hong Min Pen
Keyword(s):  
Mechanical Properties ◽  
Finite Element Method ◽  
Molecular Dynamics ◽  
Finite Element ◽  
Single Crystal ◽  
Size Effects ◽  
Tension Test ◽  
Quasicontinuum Method ◽  
Single Crystal Copper ◽  
Copper Nanowire

Quasicontinuum simulations of tension test of single crystal copper nanowire are performed to analyze deformation mechanism of tension process and size effects of mechanical properties. New tension models of nanowire are constructed by using quasicontinuum method, which has combined molecular dynamics and finite element method. Tension processes of three different length nanowires without notches and those with notches are simulated. Yield strength and elastic modulus are calculated according to the obtained load-displacement curves. Finally, the results show that the mechanical properties of copper nanowire have obvious size effect and the notches have obvious influence on the mechanical properties.

Molecular dynamics study on mechanical properties and fracture in amorphous metal

1998 ◽  
Author(s):  
Keiko Nakatani ◽  
Yoshihiko Sugiyama ◽  
Akihiro Nakatani ◽  
Hiroshi Kitagawa
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Amorphous Metal

Microstructure and Mechanical Properties in Friction Stir Processed Zr-Al-Ni-Cu Bulk Metallic Glass

2007 ◽  
Vol 561-565 ◽  
pp. 1345-1348 ◽  
Author(s):  
J. Kobata ◽  
Yorinobu Takigawa ◽  
Sung Wook Chung ◽  
Hiroshi Tsuda ◽  
Tokuteru Uesugi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Volume Fraction ◽  
Friction Zone ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Nanocrystalline Particles ◽  
The Difference

Microstructure and mechanical properties in friction stir processed (FSPed) Zr-based bulk metallic glass were investigated. The microstructure in the friction zone (FZ) exhibits an amorphous “band-like” structure with a small number of nanoscale crystalline particles. On the other hand, the microstructure in the FZ near the finish point of the process exhibits a large number of nanocrystalline particles in size of less than 20nm and amorphous phase. The difference of the microstructure in each FSP region is explained from the difference of the heat input by FSP. The hardness in each FSPed region shows higher value compared with that of other Zr-based balk metallic glasses with almost the same volume fraction of crystalline phase.

Sign in / Sign up

Export Citation Format

Share Document