Free energy calculation of Al-Li-Mg alloy from electron level

Jian Jun Zhang, Zheng Chen, Yong Xin Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Based on Thomas-Fermi model, the calculation method of free energy for atom cluster with electric field had been found. The change trend of free energy of Al-Li-Mg alloy under the effect of electric field had been calculated systemically and quantitatively. And following results had been given: mostly the free energy of A13Li and Mg5A18 at aging temperature is lower than that of free energy at solid solution temperature, but once the negative electric field increased to certain degree there will be opposite result. At aging temperature, the free energy of Al3Li and Mg5Al8 are lower than that of Al-2.14wt.%Li and Al-2.6wt.%Mg. And comparing with 1420 alloy, the electric field promotes the precipitation of Al3Li and restrains the precipitation of Mg5Al8.

Original languageEnglish
Title of host publicationProceedings - International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011
Pages219-222
Number of pages4
DOIs
StatePublished - 2011
Event2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011 - Changsha, Hunan, China
Duration: 19 Feb 201120 Feb 2011

Publication series

NameProceedings - International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011

Conference

Conference2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring, CDCIEM 2011
Country/TerritoryChina
CityChangsha, Hunan
Period19/02/1120/02/11

Keywords

  • Al-Li-Mg alloy
  • Electric field
  • Free energy
  • Thomas-Fermi model

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