Thermodynamic assessment and its application of ternary Mg-Zn-Ca system using CALPHAD method

Joon Seok Kyeong, Hyun Kyu Lim, Hu Dam Lee, Won Tae Kim, Do Hyang Kim, Byeong JooLee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recently, Mg-Zn-Ca ternary system has been reported to have excellent creep resistance since addition of Ca form Mg2Ca with high thermal stability and addition of Zn induces solution hardening effect. However, complete thermodynamic study has not besn performed yet. In this study, phase equilibrium and thermodynamic study about Mg-Zn-Ca system including 2 ternary compounds (τ1: Ca2Mg6Zn3, τ2; Ca1Mg3Zn6) has been considered. In order to assess thermodynamic parameters of ternary compound τ2, isothermal section and isopleths has been made by using DSC, DTA, XRD, SEM and TEM around the composition range of τ2. Calculated phase diagram of Mg-Zn-Ca ternary system has been studied with assessed ternary compound parameters. Solidification simulation via Scheil equation has been discussed with as-casted specimens and after heat treatment, and in particular invariant reactions have been compared with bulk glass form region.

Original languageEnglish
Title of host publicationMagnesium Technology 2009
Pages167-172
Number of pages6
Publication statusPublished - 2009 Oct 5
EventMagnesium Technology 2009 - San Francisco, CA, United States
Duration: 2009 Feb 152009 Feb 19

Publication series

NameMagnesium Technology
ISSN (Print)1545-4150

Other

OtherMagnesium Technology 2009
CountryUnited States
CitySan Francisco, CA
Period09/2/1509/2/19

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kyeong, J. S., Lim, H. K., Lee, H. D., Kim, W. T., Kim, D. H., & JooLee, B. (2009). Thermodynamic assessment and its application of ternary Mg-Zn-Ca system using CALPHAD method. In Magnesium Technology 2009 (pp. 167-172). (Magnesium Technology).