Effect of vanadium on atomic ordering characteristics and anti-phase boundary energies of B2-FeCo alloys

Aykol M., Mehrabov Ə., AKDENİZ M. V.

Intermetallics, vol.18, no.5, pp.893-899, 2010 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 18 Say: 5
  • Nəşr tarixi: 2010
  • Doi nömrəsi: 10.1016/j.intermet.2009.12.029
  • jurnalın adı: Intermetallics
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.893-899
  • Açar sözlər: A. Intermetallics, miscellaneous, B. Order/disorder transformations, D. Defects: antiphase domains, D. Site occupancy, E. Simulations, Monte Carlo
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Yox

Qısa məlumat

Effect of V on the energetical and structural characteristics of atomic ordering processes of B2-FeCo intermetallics have been investigated via electronic theory of multi-component alloys combined with Monte Carlo (MC) simulations. Emphasis has been placed on the variation of anti-phase boundary (APB) energies with V content and temperature to establish a relationship between ductility and atomic ordering characteristics of (FeCo)100-xVx (x = 0-5 at%) alloys. It was shown that APB energies are highly affected by actual degree of long range order (LRO) and also dissolution mode of V alloying element atoms. Results of present simulation reveals that partially ordered (FeCo)100-xVx alloy having x = 2 at% V facilitates the highest loss in {110} APB energy in temperature range of 300-750 K and yields drastic increase in <111> {112} APB energies with increasing concentration of V due to pinning effect. Owing to the lowest APB energy of {110} planes, (FeCo)98V2 alloy would be predicted to display higher ductility, in agreement with experimental observations, relative to binary B2-FeCo intermetallic due to more independent movement of a/2 <111> partials at low temperatures. © 2009 Elsevier Ltd. All rights reserved.