Electronic structure and the martensitic transformation in β-phase Ni-Al alloys:Al27NMR and specific-heat measurements

1992 ◽  
Vol 46 (17) ◽  
pp. 10563-10572 ◽  
Author(s):  
Silvia Rubini ◽  
Costas Dimitropoulos ◽  
Sergio Aldrovandi ◽  
Ferdinando Borsa ◽  
David R. Torgeson ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Martensitic Transformation ◽  
Specific Heat ◽  
Β Phase

PHONON SPECIFIC HEAT NEAR THE MARTENSITIC TRANSFORMATION IN A CUBIC CuZnAl ALLOY

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-1033-C6-1034 ◽  
Author(s):  
D. Abbe ◽  
R. Caudron ◽  
P. Costa
Keyword(s):  
Martensitic Transformation ◽  
Specific Heat

ELECTRONIC STRUCTURE IN AMORPHOUS AND CRYSTALLINE NICKEL PHOSPHOBORIDES THROUGH PHOTOEMISSION, NMR AND SPECIFIC HEAT

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-396-C8-399
Author(s):  
A. Amamou ◽  
D. Aliaga-Guerra ◽  
P. Panissod ◽  
G. Krill ◽  
R. Kuentzler
Keyword(s):  
Electronic Structure ◽  
Specific Heat

Single crystalline β phase Cu–Zn nanowires: Synthesis and martensitic transformation

2014 ◽  
Vol 124 ◽  
pp. 256-260 ◽  
Author(s):  
N. Haberkorn ◽  
A.M. Condó ◽  
M. Sirena ◽  
F. Soldera ◽  
F.C. Lovey
Keyword(s):  
Martensitic Transformation ◽  
Single Crystalline ◽  
Β Phase

scholarly journals Significantly fast spinodal decomposition and inhomogeneous nanoscale martensitic transformation in Ti–Nb–O alloys

2020 ◽  
Vol 321 ◽  
pp. 11049
Author(s):  
Yuya ISHIGURO ◽  
Yuhki TSUKADA ◽  
Toshiyuki KOYAMA
Keyword(s):  
Heat Treatment ◽  
Martensitic Transformation ◽  
Spinodal Decomposition ◽  
Treatment Temperature ◽  
Phase Field Method ◽  
Isothermal Heat Treatment ◽  
Phase Decomposition ◽  
Rate Condition ◽  
Continuous Cooling ◽  
Β Phase

The β phase spinodal decomposition during continuous cooling in Ti‒Nb‒O alloys is investigated by the phase-field method. Addition of only a few at.%O to Ti‒23Nb (at.%) alloy remarkably increases the driving force of the β phase spinodal decomposition. During isothermal heat treatment at 1000 K and 1100 K in Ti‒23Nb‒3O (at.%) alloy, the β phase separates into β1 phase denoted as (Ti)1(O, Va)3 and β2 phase denoted as (Ti, Nb)1(Va)3, resulting in the formation of nanoscale concentration modulation. The phase decomposition progresses in 0.3‒20 ms. In Ti‒23Nb‒XO alloys (X = 1.0, 1.2, 2.0), the spinodal decomposition occurs during continuous cooling with the rate of 500 K s‒1, indicating that the spinodal decomposition occurs during water quenching in the alloys. It is assumed that there is a threshold value of oxygen composition for inducing the spinodal decomposition because it does not occur during continuous cooling in Ti‒23Nb‒0.6O (at.%) alloy. The concentration modulation introduced by the β phase decomposition has significant effect on the β→α” martensitic transformation. Hence, it seems that for controlling microstructure and mechanical properties of Ti‒Nb‒O alloys, careful control of heat treatment temperature and cooling rate condition is required.

scholarly journals The Electronic Structure and Specific Heat of YNi4Si

2008 ◽  
Vol 113 (1) ◽  
pp. 323-326 ◽  
Author(s):  
M. Pugaczowa-Michalska ◽  
M. Falkowski ◽  
A. Kowalczyk ◽  
M. Timko ◽  
M. Reiffers ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Specific Heat

An In Situ Observation of Slip Deformation in a Compressed Ti-Mo-Al Single Crystal

2018 ◽  
Vol 941 ◽  
pp. 1463-1467
Author(s):  
Ryotaro Hara ◽  
Masaki Tahara ◽  
Tomonari Inamura ◽  
Hideki Hosoda
Keyword(s):  
Martensitic Transformation ◽  
Slip System ◽  
Single Crystal ◽  
Deformation Behavior ◽  
Room Temperature ◽  
Martensite Phase ◽  
Slip Direction ◽  
Β Phase ◽  
Slip Deformation

The stress-induced martensitic transformation and slip deformation behavior were investigated by the compression test with anin-situobservation in a Ti-6Mo-10Al (mol %) alloy single crystal. Owing to the stress-induced martensitic transformation from the parent β phase to the α′′ martensite phase, the single crystal of α′′ martensite without internal twinnings was successfully obtained at room temperature. By further compression, the slip deformation occurred in the single crystal of α′′ martensite. The operated slip system in the α′′ martensite was analyzed by the two face trace analyses, and the slip direction was determined to be []o.

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