Influence of an applied strain field on microstructural evolution during the α2→O-phase transformation in Ti-Al-Nb system

Y. H. Wen, Y. Wang, Long-qing Chen

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We investigate the influence of an applied homogeneous strain on the coherent α2 (DO19) to O-phase transformation in Ti-Al-Nb alloys using a phase-field approach. The emphasis is on the effect of the applied strain on the two-phase morphology, as well as the equilibrium volume fractions of different orientation domains of the O-phase. It is found that the applied homogeneous strain field does not change the essential features of the morphological patterns, but does alter the relative amount of each orientation domain and the equilibrium volume fraction of the O-phase. When the applied strain is of the same order of magnitude as the stress-free transformation strain, the initial two-phase mixture becomes unstable and transforms into a single O-phase.

Original languageEnglish (US)
Pages (from-to)13-20
Number of pages8
JournalActa Materialia
Volume49
Issue number1
DOIs
StatePublished - Jan 8 2001

Fingerprint

Microstructural evolution
Phase transitions
Volume fraction

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

@article{dcf6a55609084e4c9af1dca2e62ec9c4,
title = "Influence of an applied strain field on microstructural evolution during the α2→O-phase transformation in Ti-Al-Nb system",
abstract = "We investigate the influence of an applied homogeneous strain on the coherent α2 (DO19) to O-phase transformation in Ti-Al-Nb alloys using a phase-field approach. The emphasis is on the effect of the applied strain on the two-phase morphology, as well as the equilibrium volume fractions of different orientation domains of the O-phase. It is found that the applied homogeneous strain field does not change the essential features of the morphological patterns, but does alter the relative amount of each orientation domain and the equilibrium volume fraction of the O-phase. When the applied strain is of the same order of magnitude as the stress-free transformation strain, the initial two-phase mixture becomes unstable and transforms into a single O-phase.",
author = "Wen, {Y. H.} and Y. Wang and Long-qing Chen",
year = "2001",
month = "1",
day = "8",
doi = "10.1016/S1359-6454(00)00306-2",
language = "English (US)",
volume = "49",
pages = "13--20",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier Limited",
number = "1",

}

Influence of an applied strain field on microstructural evolution during the α2→O-phase transformation in Ti-Al-Nb system. / Wen, Y. H.; Wang, Y.; Chen, Long-qing.

In: Acta Materialia, Vol. 49, No. 1, 08.01.2001, p. 13-20.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of an applied strain field on microstructural evolution during the α2→O-phase transformation in Ti-Al-Nb system

AU - Wen, Y. H.

AU - Wang, Y.

AU - Chen, Long-qing

PY - 2001/1/8

Y1 - 2001/1/8

N2 - We investigate the influence of an applied homogeneous strain on the coherent α2 (DO19) to O-phase transformation in Ti-Al-Nb alloys using a phase-field approach. The emphasis is on the effect of the applied strain on the two-phase morphology, as well as the equilibrium volume fractions of different orientation domains of the O-phase. It is found that the applied homogeneous strain field does not change the essential features of the morphological patterns, but does alter the relative amount of each orientation domain and the equilibrium volume fraction of the O-phase. When the applied strain is of the same order of magnitude as the stress-free transformation strain, the initial two-phase mixture becomes unstable and transforms into a single O-phase.

AB - We investigate the influence of an applied homogeneous strain on the coherent α2 (DO19) to O-phase transformation in Ti-Al-Nb alloys using a phase-field approach. The emphasis is on the effect of the applied strain on the two-phase morphology, as well as the equilibrium volume fractions of different orientation domains of the O-phase. It is found that the applied homogeneous strain field does not change the essential features of the morphological patterns, but does alter the relative amount of each orientation domain and the equilibrium volume fraction of the O-phase. When the applied strain is of the same order of magnitude as the stress-free transformation strain, the initial two-phase mixture becomes unstable and transforms into a single O-phase.

UR - http://www.scopus.com/inward/record.url?scp=0035151264&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035151264&partnerID=8YFLogxK

U2 - 10.1016/S1359-6454(00)00306-2

DO - 10.1016/S1359-6454(00)00306-2

M3 - Article

AN - SCOPUS:0035151264

VL - 49

SP - 13

EP - 20

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 1

ER -