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Schaeffler-Type Phase Diagram of Ti-Based Alloys.
- Source :
- Metallurgical & Materials Transactions. Part A; Oct2017, Vol. 48 Issue 10, p4990-4998, 9p
- Publication Year :
- 2017
-
Abstract
- The α(hcp)/β(bcc) phase equilibria of Ti-based multi-component alloys can be described by a Schaeffler-type diagram, where Al and Mo equivalents (Aleq and Moeq) are used. Aleq is thermodynamically defined by the ratio of partial molar free energy changes transfer of one mole of each α forming element and Al from a dilute solution of α to β phases, while Moeq is also deduced by similar thermodynamic quantities of β forming element and Mo. Aleq and Moeq for 40 alloying elements are estimated from the thermodynamic parameters assessed by Kaufman and Murray. It is shown that three types of Ti alloys, i.e., α and near α, α+β, and β alloys, can be exactly classified using Aleq and Moeq. The Ms and β transus temperatures can also be predicted by Aleq and Moeq. The proposed Aleq and Moeq are very useful for alloy design, heat treatment, and microstructural evolution of Ti-based alloys. [ABSTRACT FROM AUTHOR]
- Subjects :
- ALLOYS
AMALGAMATION
MICROALLOYING
THERMODYNAMICS
ENDERGONIC reactions
Subjects
Details
- Language :
- English
- ISSN :
- 10735623
- Volume :
- 48
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Metallurgical & Materials Transactions. Part A
- Publication Type :
- Academic Journal
- Accession number :
- 124968015
- Full Text :
- https://doi.org/10.1007/s11661-017-4218-3