Investigation of the phase equilibria in the Sn-Bi-In alloy system

Citation
Sw. Yoon et al., Investigation of the phase equilibria in the Sn-Bi-In alloy system, MET MAT T A, 30(6), 1999, pp. 1503-1515
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science",Metallurgy
Journal title
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN journal
1073-5623 → ACNP
Volume
30
Issue
6
Year of publication
1999
Pages
1503 - 1515
Database
ISI
SICI code
1073-5623(199906)30:6<1503:IOTPEI>2.0.ZU;2-O
Abstract
This article presents an investigation of the phase equilibria in the Sn-Bi -In ternary alloy system, performed both by theoretical and experimental me thods. Following the regular solution model and a standard thermochemical c alculation, a theoretical evaluation of the phase equilibrium in the entire ternary system is conducted. The thermodynamic parameters required for the calculation are initially obtained by fitting the model to existing data a vailable from prior studies. The theoretical results are then validated and further improved by experimental work in which alloys with several critica l compositions were chosen and examined. In the experimental work, differen tial scanning calorimetry (DSC), X-ray diffraction (XRD), and energy-disper sive X-ray (EDX) spectroscopy were jointly used to identify the transition temperatures and the phases in the microstructure. The resulting phase diag ram agrees well both with the existing data and with the data from the curr ent experiments. However, different from previous findings, this study find s a nonbinary nature of the Sn-BiIn and Sn-BiIn2 quasi-binaries and nine in variant reactions, one eutectic, six peritectic and two peritectoid. The ph ase-reaction scheme (Scheil diagram), the liquidus projection, and the phas e diagram, covering entire compositional ranges, are established.