Compression-Induced Martensitic Transformations in Cu-Zn-Al Alloys with e/a > 1.50

1996 ◽  
Vol 459 ◽  
Author(s):  
A. Cuniberti ◽  
R. Romero
Keyword(s):  
Single Crystals ◽  
Martensitic Transformations ◽  
Al Alloys ◽  
Tension Test ◽  
Stress Strain ◽  
Different Temperatures ◽  
Electronic Concentration

ABSTRACTResults are reported about the pseudoelastic cycles β-martensite obtained by compression of β Cu-Zn-Al single crystals with electronic concentration 1.52. Stress-strain curves at different temperatures and in situ observations were carried out. The results are compared with those obtained from tension test.

In-Situ TEM Observations of Martensitic Transformations in Ni-rich NiTi Single Crystals with Coherent and Aligned Precipitates

ICOMAT ◽  
2013 ◽  
pp. 89-93
Author(s):  
A. Kröger ◽  
S. Dziaszyk ◽  
J. Frenze ◽  
Ch. Somsen ◽  
A. Dlouhy ◽  
...  
Keyword(s):  
Single Crystals ◽  
Martensitic Transformations ◽  
In Situ Tem

In situ TEM observation of stress-induced martensitic transformations and twinning processes in CuAlNi single crystals

2010 ◽  
Vol 58 (15) ◽  
pp. 5109-5119 ◽  
Author(s):  
N. Zárubová ◽  
J. Gemperlová ◽  
A. Gemperle ◽  
Z. Dlabáček ◽  
P. Šittner ◽  
...  
Keyword(s):  
Single Crystals ◽  
Martensitic Transformations ◽  
In Situ Tem

Temperature Influence on Stress-Strain Relationship of Al-Cu-Fe Crystal-Quasicrystal Composites

2010 ◽  
Vol 163 ◽  
pp. 282-285 ◽  
Author(s):  
Jacek Krawczyk ◽  
Wojciech Gurdziel ◽  
Włodzimierz Bogdanowicz ◽  
Krzysztof Flisiński
Keyword(s):  
Icosahedral Quasicrystal ◽  
X Ray Diffraction ◽  
Stress Strain ◽  
Monoclinic Crystal ◽  
Β Phase ◽  
The Matrix ◽  
Different Temperatures ◽  
Strain Relationship ◽  
Relationship Of

The columnar composites obtained “in situ” through solidification of Al61Cu27Fe12 alloy by the Bridgman method were studied. It has been verified that the matrix consisted of cubic single crystal β phase and the reinforcement of icosahedral quasicrystal ψ phase and monoclinic crystal λ phase, which have the form of rods. This kind of composites will be named the Al-Cu-Fe crystal-quasicrystal (CQ) composites. The effect of heating from a temperature of about 100°C to about 650°C on the stress-strain relationships σ(ε) of parallel samples was studied. Additionally, the σ(ε) relationship was defined in cyclic load-unload tests at different temperatures. The composites were examined by powder X-ray diffraction and scanning electron microscope.

SMA and SME in Cu-Zn-Al Alloys: Local Studies in α, ε, T Space

1991 ◽  
Vol 246 ◽  
Author(s):  
A. Amengual ◽  
A. Isalgué ◽  
F.C. Lovey ◽  
F. Marco ◽  
V. Torra
Keyword(s):  
High Resolution ◽  
Mechanical Stress ◽  
Single Crystals ◽  
Experimental Observation ◽  
Hysteresis Loops ◽  
Al Alloys ◽  
Material Behaviour ◽  
Electronic Concentration ◽  
The Creation

AbstractThe use of Cu-Zn-Al single crystals (electronic concentration e/a= 1.48) and of a high resolution equipment allows to study the evolution of one or few martensite domains. This kind of study proves the existence of intrinsic thermoelasticity, the differences between different friction processes (interface movements and nucleation) and also the coherence of the hysteresis loops obtained through mechanical stress or temperature. The different evolutions linked to the creation of dislocations or to the change of é precipitates can clearly be seen during the cycling. The observations allow to establish a model of the material behaviour consistent with experimental observation.

In Situ Characterization of Soils for Prediction of Stress-Strain Relationship

1983 ◽  
Author(s):  
K. Arulanandan ◽  
Y. Dafalias ◽  
L. R. Herrmann ◽  
A. Anandarajah ◽  
N. Meegoda
Keyword(s):  
In Situ Characterization ◽  
Stress Strain ◽  
Strain Relationship

scholarly journals A Superhydrophobic, Antibacterial, and Durable Surface of Poplar Wood

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1885
Author(s):  
Xinyu Wu ◽  
Feng Yang ◽  
Jian Gan ◽  
Zhangqian Kong ◽  
Yan Wu
Keyword(s):  
Stearic Acid ◽  
Antibacterial Properties ◽  
Alkali Resistance ◽  
Poplar Wood ◽  
X Ray Diffraction ◽  
X Ray ◽  
Different Temperatures ◽  
Acid And Alkali Resistance ◽  
The Stability

The silver particles were grown in situ on the surface of wood by the silver mirror method and modified with stearic acid to acquire a surface with superhydrophobic and antibacterial properties. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray energy spectroscopy (XPS) were used to analyze the reaction mechanism of the modification process. Scanning electron microscopy (SEM) and contact angle tests were used to characterize the wettability and surface morphology. A coating with a micro rough structure was successfully constructed by the modification of stearic acid, which imparted superhydrophobicity and antibacterial activity to poplar wood. The stability tests were performed to discuss the stability of its hydrophobic performance. The results showed that it has good mechanical properties, acid and alkali resistance, and UV stability. The durability tests demonstrated that the coating has the function of water resistance and fouling resistance and can maintain the stability of its hydrophobic properties under different temperatures of heat treatment.

Evolution of Pore Ordering during Anodizing of Aluminum Single Crystals: In Situ Small-Angle X-ray Scattering Study

2021 ◽  
Author(s):  
Ilya V. Roslyakov ◽  
Andrei P. Chumakov ◽  
Andrei A. Eliseev ◽  
Alexey P. Leontiev ◽  
Oleg V. Konovalov ◽  
...  
Keyword(s):  
Single Crystals ◽  
Small Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Ray Scattering
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