Strong orientation dependence of the scattering of fluoroform by graphite (0001)

1990 ◽  
Vol 92 (1) ◽  
pp. 801-802 ◽  
Author(s):  
R. Scott Mackay ◽  
Thomas J. Curtiss ◽  
Richard B. Bernstein
Keyword(s):  
Orientation Dependence ◽  
Strong Orientation

Orientation Dependence of Ductility of Mg Single Crystals at Elevated Temperature

2005 ◽  
Vol 488-489 ◽  
pp. 193-196 ◽  
Author(s):  
Hiromi Miura ◽  
Taku Sakai ◽  
H. Nogawa ◽  
Xu Yue Yang ◽  
Yoshimi Watanabe ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Crystal Orientation ◽  
Fracture Strain ◽  
Orientation Dependence ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Ductility ◽  
Superplastic Behavior ◽  
Strong Orientation

Orientation-controlled Mg single crystals were tensile tested at temperatures between 473 K and 673 K at a strain rate of 4.2 x 10-4 s-1 in vacuum. Though all the single crystals showed high ductility compared with that of polycrystals, the ductility of the single crystals strongly depended on the crystal orientation. The [27 -1 -26 1] single crystal showed 0.57 fracture strain, while the [3 8 -11 -1] single crystal showed superplastic behavior of ductility over 1.8 strain. The observed strong orientation dependence of ductility seemed to be caused by orientation dependence of ease occurrence of dynamic recrystallization (DRX) in the single crystals during high-temperature deformation. The orientation dependence of ductility of Mg single crystals will be discussed in detail concerning crystallographical orientations of the single crystals, occurrence of DRX and fracture.

Study of Deformation Twinning and Planar Slip in a TWIP Steel by Electron Channeling Contrast Imaging in a SEM

2011 ◽  
Vol 702-703 ◽  
pp. 523-529 ◽  
Author(s):  
Ivan Gutierrez-Urrutia ◽  
Dierk Raabe
Keyword(s):  
Twip Steel ◽  
High Strain ◽  
Dislocation Substructure ◽  
True Strain ◽  
Orientation Dependence ◽  
Contrast Imaging ◽  
Electron Channeling ◽  
Strong Orientation ◽  
Dislocation Cells ◽  
Planar Dislocation

We study the dislocation and twin substructures in a high manganese twinning-induced-plasticity steel (TWIP) by means of electron channeling contrast imaging. At low strain (true strain below 0.1) the dislocation substructure shows strong orientation dependence. It consists of dislocation cells and planar dislocation arrangements. This dislocation substructure is replaced by a complex dislocation/twin substructure at high strain (true strain of 0.3-0.4). The twin substructure also shows strong orientation dependence. We identify three types of dislocation/twin substructures. Two of these substructures, those which are highly favorable or unfavorable oriented for twinning, exhibit a Schmid behavior. The other twin substructure does not fulfill Schmid’s law.

Hydrogen adsorption on Al(110): strong orientation-dependence of aluminum hydride desorption

1992 ◽  
Vol 268 (1-3) ◽  
pp. L287-L292 ◽  
Author(s):  
H. Kondoh ◽  
M. Hara ◽  
K. Domen ◽  
H. Nozoye
Keyword(s):  
Hydrogen Adsorption ◽  
Aluminum Hydride ◽  
Orientation Dependence ◽  
Strong Orientation

scholarly journals Strong orientation dependence of surface mass density profiles of dark haloes at large scales

2018 ◽  
Vol 477 (2) ◽  
pp. 2141-2153 ◽  
Author(s):  
Ken Osato ◽  
Takahiro Nishimichi ◽  
Masamune Oguri ◽  
Masahiro Takada ◽  
Teppei Okumura
Keyword(s):  
Mass Density ◽  
Orientation Dependence ◽  
Density Profiles ◽  
Surface Mass ◽  
Strong Orientation ◽  
Surface Mass Density

Microstructure and Mechanical Properties of NbSi2/MoSi2 Crystals with Lamellar Structure

2014 ◽  
Vol 783-786 ◽  
pp. 1123-1128 ◽  
Author(s):  
Koji Hagihara ◽  
Yoichiro Hama ◽  
Tatsuya Fushiki ◽  
Koretaka Yuge ◽  
Takayoshi Nakano
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Lamellar Structure ◽  
Lamellar Microstructure ◽  
Orientation Dependence ◽  
High Temperature Strength ◽  
Minute Amount ◽  
New Class ◽  
Strong Orientation ◽  
Thermal Stability Of

NbSi2/MoSi2 duplex silicide crystals are potentially a new-class of ultra-high temperature structural materials. Improvement in the thermal stability of their lamellar microstructure was accomplished by the addition of a minute amount of either Cr or Zr. The mechanical properties of the duplex silicide, such as fracture toughness and high temperature strength, show strong orientation dependence, thereby suggesting the importance of the control of microstructure to improve their properties.

Voltage and Orientation Dependence of Characteristic X-Ray Production in Thin Crystals

1985 ◽  
Vol 43 ◽  
pp. 414-415
Author(s):  
G. Thomas ◽  
K. M. Krishnan ◽  
Y. Yokota ◽  
H. Hashimoto
Keyword(s):  
Standing Wave ◽  
Incident Beam ◽  
Orientation Dependence ◽  
Incident Plane Wave ◽  
Crystalline Materials ◽  
X Ray ◽  
Incident Plane ◽  
Crystal Unit Cell ◽  
Beam Orientation ◽  
Acceleration Voltage

For crystalline materials, an incident plane wave of electrons under conditions of strong dynamical scattering sets up a standing wave within the crystal. The intensity modulations of this standing wave within the crystal unit cell are a function of the incident beam orientation and the acceleration voltage. As the scattering events (such as inner shell excitations) that lead to characteristic x-ray production are highly localized, the x-ray intensities in turn, are strongly determined by the orientation and the acceleration voltage. For a given acceleration voltage or wavelength of the incident wave, it has been shown that this orientation dependence of the characteristic x-ray emission, termed the “Borrmann effect”, can also be used as a probe for determining specific site occupations of elemental additions in single crystals.

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