Structural transformations in the NiAl alloys with deviations from the stoichiometric composition during stepwise cooling

Open School-Conference of NIS Countries Ultrafine Grained and Nanostructured Materials

Chaplygina, A.A.^1 ; Chaplygin, P.A.^1 ; Starostenkov, M.D.^1

Department of Physics, Altai State Technical University, 46 Lenin Ave., Barnaul

656038, Russia^1

关键词: Energy characteristics;    Monte Carlo simulation methods;    Ni-al intermetallic compounds;    NiAl alloy;    Ordered phase;    Stoichiometric compositions;    Structural phase transition;    Structural transformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012054/pdf
DOI  :  10.1088/1757-899X/447/1/012054

来源: IOP

【 摘 要 】

The Monte Carlo simulation method shows the formation of B2 superstructure domains in the course of structural phase transitions during stepwise cooling of the Ni-Al intermetallic compound with a deviation from stoichiometry. The effect of the deviation from stoichiometry on the structure and energy characteristics of the alloy during stepwise cooling is analyzed in this article. It is shown that the highest percentage of the ordered phase after stepwise cooling has the alloy with a stoichiometric composition.