Changes in phase stability on Ti-10 aT.%Mo alloy by alloying elements

T. N. Rohmannudin, J. Syarif, M. Z. Omar, Z. Sajuri, A. R. Daud

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The objective of this study is to investigate the effect of alloying elements on phase stability in Ti-10at.%Mo alloy. Theoretical calculations such as Bo-Md calculation and Calphad using JMatPro software have been applied to predict phase stability of Ti-10at.%Mo alloy owing to third alloying elements at elevated and ambient temperature. In this study, powder metallurgy, sintering, and solution treatment are applied for fabrication of sample. It is found that α' or α" phases slightly exist within ß matrix in the Ti-10at.%Mo alloy after sintering at 1573K for 14.4ks and solution treatment at 1373K for 3.6ks. It is also found that addition of alloying elements such as Fe, Cr and Sn can stabilise the ß phase in ambient temperature after fabrication by the same process. XRD-peaks of the α' or α" phases are decreased owing to the addition of those alloying elements for 5at%. Moreover, the addition of 10at% of Fe, Cr and Sn could retard formation of α' or α" phases. However, the alloying elements have significant difference on stabilisation of the ß phase. The addition of 10at% Cr can promote full ß phase. On the other hand, addition of Sn and Fe still reveal α' or α" phase. Thus, it is thought that the addition of the alloying elements is effective for stabilise the ß phase in ambient temperature and the addition of 10at% Cr is the minimal requirement to obtain full ß phase in Ti10at.%Mo alloy.

Original languageEnglish
Pages (from-to)172-175
Number of pages4
JournalInternational Journal of Mechanical and Materials Engineering
Issue number2
Publication statusPublished - 2009
Externally publishedYes


  • Alloying elements
  • Phase stability
  • Powder metallurgy
  • Ti-10at.%Mo alloys
  • ß phase
  • α or α" phases


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