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Phase formation rules

Yong Zhang ; Sheng Guo (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; C. T. Liu ; Xiao Yang
High-Entropy Alloys: Fundamentals and Applications p. 21-49. (2016)
[Kapitel]

This chapter gives an overview of existing active phase formation rules for high-entropy alloys (HEAs). A parametric approach using physiochemical parameters including enthalpy of mixing, entropy of mixing, melting points, atomic size difference, and valence electron concentration is used to delineate phase formation rules for HEAs, with a reference to other multicomponent alloys like bulk metallic glasses (BMGs). Specifically, rules on forming solid solutions, intermetallic compounds, and the amorphous phase are described in detail; formation rules of solid solutions with the face-centered cubic (fcc) or body-centered cubic (bcc) structure are also discussed. Some remaining issues and future prospects on phase formation rules for HEAs are also addressed at the end. © Springer International Publishing Switzerland 2016.

Nyckelord: Atomic size difference, Body-centered cubic (bcc), Bulk metallic glasses, Electronegativity difference, Empirical rules, Enthalpy of mixing, Entropy of mixing, Face-centered cubic (fcc), Hexagonal close-packed (hcp), High-entropy alloys (HEAs), Hume-Rothery rules, Multiphase, Single phase, Solid solution, Valence electron concentration e/a ratio



Denna post skapades 2016-12-20.
CPL Pubid: 246362

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik (2005-2017)

Ämnesområden

Materialteknik

Chalmers infrastruktur