Characterization of phase transformations, long range order and thermal properties of Ni _{2} MnGa alloys

2001 ◽  
Vol 12 (1-2) ◽  
pp. 9-17 ◽  
Author(s):  
Hideki Hosoda ◽  
Tsuyoshi Sugimoto ◽  
Kenji Ohkubo ◽  
Seiji Miura ◽  
Tetsuo Mohri ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Phase Transformations ◽  
Long Range ◽  
Range Order ◽  
Long Range Order

scholarly journals NMR Characterization of Long-Range Order in Intrinsically Disordered Proteins

2010 ◽  
Vol 132 (24) ◽  
pp. 8407-8418 ◽  
Author(s):  
Loïc Salmon ◽  
Gabrielle Nodet ◽  
Valéry Ozenne ◽  
Guowei Yin ◽  
Malene Ringkjøbing Jensen ◽  
...  
Keyword(s):  
Long Range ◽  
Intrinsically Disordered Proteins ◽  
Range Order ◽  
Disordered Proteins ◽  
Long Range Order ◽  
Intrinsically Disordered ◽  
Nmr Characterization

Structural characterization of C–S–H and C–A–S–H samples—Part I: Long-range order investigated by Rietveld analyses

2009 ◽  
Vol 182 (12) ◽  
pp. 3312-3319 ◽  
Author(s):  
Guillaume Renaudin ◽  
Julie Russias ◽  
Fabrice Leroux ◽  
Fabien Frizon ◽  
Céline Cau-dit-Coumes
Keyword(s):  
Long Range ◽  
Structural Characterization ◽  
Range Order ◽  
Long Range Order

Zur Thermodynamik der Strukturumwandlungen

1968 ◽  
Vol 23 (9) ◽  
pp. 1276-1280 ◽  
Author(s):  
K. Schubert
Keyword(s):  
Phase Transformations ◽  
Long Range ◽  
Short Range ◽  
Short Range Order ◽  
Second Order ◽  
Range Order ◽  
Long Range Order

The classification of the structure transformations may be improved by considering the phenomena of long range order and short range order. The Lambda transformations and the phase transformations are distinguished from one another in that certain entropie values which may be found by extrapolation are bigger or smaller than the latent entropy. Transformations of the second order are to be considered as improbable limiting cases.

Synthesis and Characterization of Nanosized NiAl Particles

1998 ◽  
Vol 520 ◽  
Author(s):  
T. Chen ◽  
J.M. Hampikian
Keyword(s):  
Solid State ◽  
Mechanical Alloying ◽  
Long Range ◽  
Solid State Reaction ◽  
Shear Bands ◽  
Range Order ◽  
Long Range Order ◽  
Mechanically Alloyed ◽  
Edge Dislocations

ABSTRACTNanophase NiAl powders were synthesized by solid state reaction via ball milling of elemental Ni and Al powders under an argon atmosphere for 0-8 h, 16 h, 24 h, and 48 h. Structural characterization of the nanophase NiAI was performed by x-ray diffraction and transmission electron microscopy. The oxidation behavior of the powders was studied by thermogravimetric analysis. It was found that the Ni + Al = NiAl solid state reaction took place between 4 and 5 hours of mechanical alloying. After 5 h or more of mechanical alloying, the phase of the ball milled particles was the B2 structure, with average grain sizes which decreased with increasing mechanical alloying times. The relationship between the long-range-order parameters and mechanical alloying time was studied. After 5 h, 6 h, 8 h, 16 h, 24 h, and 48 h mechanical alloying, the long-range-order parameter was determined to be approximately 0.82, 0.75, 0.75, 0.75, 0.71, and 0.63, respectively. Iron contamination was observed, resulting from wear of the steel vial and balls. In the mechanically alloyed NiAl nanoparticles, edge dislocations, shear bands, subgrains, distorted regions, and a large number of grain boundaries were observed.

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