Fatigue curve of microscale single-crystal copper: An in situ SEM tension-compression study

2020 ◽  
Vol 171 ◽  
pp. 105361 ◽  
Author(s):  
Yabin Yan ◽  
Takashi Sumigawa ◽  
Xiaoyuan Wang ◽  
Wufan Chen ◽  
Fuzhen Xuan ◽  
...  
Keyword(s):  
Single Crystal ◽  
Fatigue Curve ◽  
Single Crystal Copper

In situ observation of fatigue behavior of single crystal copper micron-scale specimen under tension-compression cyclic loading

2018 ◽  
Vol 2018 (0) ◽  
pp. OS1403
Author(s):  
Takashi SUMIGAWA ◽  
Kim BYUNGWOON ◽  
Yuki MIZUNO ◽  
Takuma MORIMURA ◽  
Takayuki KITAMURA
Keyword(s):  
Cyclic Loading ◽  
Single Crystal ◽  
Fatigue Behavior ◽  
Single Crystal Copper

In situ observation on formation process of nanoscale cracking during tension-compression fatigue of single crystal copper micron-scale specimen

2018 ◽  
Vol 153 ◽  
pp. 270-278 ◽  
Author(s):  
Takashi Sumigawa ◽  
Kim Byungwoon ◽  
Yuki Mizuno ◽  
Takuma Morimura ◽  
Takayuki Kitamura
Keyword(s):  
Single Crystal ◽  
Formation Process ◽  
In Situ Observation ◽  
Single Crystal Copper

FE-SEM in situ observation of damage evolution in tension-compression fatigue of micro-sized single-crystal copper

2019 ◽  
Vol 764 ◽  
pp. 138218 ◽  
Author(s):  
Takashi Sumigawa ◽  
Shin Uegaki ◽  
Tetsuya Yukishita ◽  
Shigeo Arai ◽  
Yoshimasa Takahashi ◽  
...  
Keyword(s):  
Single Crystal ◽  
Damage Evolution ◽  
In Situ Observation ◽  
Single Crystal Copper

Direct observations of the sintering of silver nanoparticles on single crystal copper by in-situ uhv tem

1997 ◽  
Vol 501 ◽  
Author(s):  
M. Yeadon ◽  
J. C. Yang ◽  
R. S. Averback ◽  
J. W. Bullard ◽  
J. M. Gibson
Keyword(s):  
Silver Nanoparticles ◽  
Electron Microscope ◽  
Single Crystal ◽  
Epitaxial Film ◽  
Substrate Surface ◽  
Silver Particles ◽  
Single Crystal Copper ◽  
Direct Observations ◽  
Transmission Electron

ABSTRACTUsing a novel ultrahigh vacuum (UHV) transmission electron microscope with in-situ UHV sputtering attachment we have studied the sintering of copper and silver nanoparticles with single crystal copper substrates. Copper and silver particles deposited on (001) copper initially assume random orientations. Upon annealing, however, the particles reorient and assume an epitaxial orientation with the substrate. In the case of copper on copper, homoepitaxy occurs by a process involving sintering and grain growth. In the case of silver on copper, we have observed the particles to wet the substrate surface and sinter to form a thin epitaxial film with the orientation relationship (111)Ag // (001)Cu, [110]Ag // [110]Cu.

Bending stress relaxation of microscale single-crystal copper at room temperature: An in situ SEM study

2021 ◽  
pp. 104377
Author(s):  
Wufan Chen ◽  
Xiaoyuan Wang ◽  
Yabin Yan ◽  
Takashi Sumigawa ◽  
Takayuki Kitamura ◽  
...  
Keyword(s):  
Stress Relaxation ◽  
Single Crystal ◽  
Room Temperature ◽  
Bending Stress ◽  
Single Crystal Copper ◽  
Sem Study

Structure of Palladium Single-Crystal Films Prepared by Flash Evaporation onto (001) NaCl Substrates

1970 ◽  
Vol 28 ◽  
pp. 456-457
Author(s):  
L. E. Murr ◽  
G. Wong
Keyword(s):  
Single Crystal ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
High Rate ◽  
Flash Evaporation ◽  
Optimum Load ◽  
Single Crystal Films ◽  
Crystal Films ◽  
A Current

Palladium single-crystal films have been prepared by Matthews in ultra-high vacuum by evaporation onto (001) NaCl substrates cleaved in-situ, and maintained at ∼ 350° C. Murr has also produced large-grained and single-crystal Pd films by high-rate evaporation onto (001) NaCl air-cleaved substrates at 350°C. In the present work, very large (∼ 3cm2), continuous single-crystal films of Pd have been prepared by flash evaporation onto air-cleaved (001) NaCl substrates at temperatures at or below 250°C. Evaporation rates estimated to be ≧ 2000 Å/sec, were obtained by effectively short-circuiting 1 mil tungsten evaporation boats in a self-regulating system which maintained an optimum load current of approximately 90 amperes; corresponding to a current density through the boat of ∼ 4 × 104 amperes/cm2.

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

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