On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy

Shanoob Balachandran; Ankush Kashiwar; Abhik Choudhury; Dipankar Banerjee; Rongpei Shi; Yunzhi Wang

doi:10.1016/j.actamat.2016.01.023

On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy

Shanoob Balachandran
, Ankush Kashiwar
, Abhik Choudhury
, Dipankar Banerjee^*
, Rongpei Shi
, Yunzhi Wang

^*Corresponding author for this work

Indian Institute of Science Bangalore
Ohio State University

Research output: Contribution to journal › Article › peer-review

151 Scopus citations

Abstract

The stereology, variant distribution and coarsening behavior of semicoherent α(hcp) precipitates in a β(bcc) matrix of a Ti5553 alloy has been analyzed, and a dominant 3-variant cluster has been observed in which the variants are related to each other by an axis-angle pair <112¯ 0 >/ 60°. Shape and spatial distribution independent elastic self and interaction energies for all pairwise and triplet combinations of α have been calculated and it is found that the 3-cluster combination that is experimentally observed most frequently has the lowest energy for the semicoherent state. The coarsening behavior of the delta distribution follows LSW kinetics after an initial transient, and has been modeled by phase field methods.

Original language	English
Pages (from-to)	374-387
Number of pages	14
Journal	Acta Materialia
Volume	106
DOIs	https://doi.org/10.1016/j.actamat.2016.01.023
State	Published - Mar 2016
Externally published	Yes

Keywords

Coarsening
Self-accommodation
Titanium alloys
Variant selection

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10.1016/j.actamat.2016.01.023

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title = "On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy",

abstract = "The stereology, variant distribution and coarsening behavior of semicoherent α(hcp) precipitates in a β(bcc) matrix of a Ti5553 alloy has been analyzed, and a dominant 3-variant cluster has been observed in which the variants are related to each other by an axis-angle pair <112¯ 0 >/ 60°. Shape and spatial distribution independent elastic self and interaction energies for all pairwise and triplet combinations of α have been calculated and it is found that the 3-cluster combination that is experimentally observed most frequently has the lowest energy for the semicoherent state. The coarsening behavior of the delta distribution follows LSW kinetics after an initial transient, and has been modeled by phase field methods.",

keywords = "Coarsening, Self-accommodation, Titanium alloys, Variant selection",

author = "Shanoob Balachandran and Ankush Kashiwar and Abhik Choudhury and Dipankar Banerjee and Rongpei Shi and Yunzhi Wang",

note = "Publisher Copyright: {\textcopyright} 2016 Acta Materialia Inc.",

year = "2016",

month = mar,

doi = "10.1016/j.actamat.2016.01.023",

language = "英语",

volume = "106",

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TY - JOUR

T1 - On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy

AU - Balachandran, Shanoob

AU - Kashiwar, Ankush

AU - Choudhury, Abhik

AU - Banerjee, Dipankar

AU - Shi, Rongpei

AU - Wang, Yunzhi

PY - 2016/3

Y1 - 2016/3

N2 - The stereology, variant distribution and coarsening behavior of semicoherent α(hcp) precipitates in a β(bcc) matrix of a Ti5553 alloy has been analyzed, and a dominant 3-variant cluster has been observed in which the variants are related to each other by an axis-angle pair <112¯ 0 >/ 60°. Shape and spatial distribution independent elastic self and interaction energies for all pairwise and triplet combinations of α have been calculated and it is found that the 3-cluster combination that is experimentally observed most frequently has the lowest energy for the semicoherent state. The coarsening behavior of the delta distribution follows LSW kinetics after an initial transient, and has been modeled by phase field methods.

AB - The stereology, variant distribution and coarsening behavior of semicoherent α(hcp) precipitates in a β(bcc) matrix of a Ti5553 alloy has been analyzed, and a dominant 3-variant cluster has been observed in which the variants are related to each other by an axis-angle pair <112¯ 0 >/ 60°. Shape and spatial distribution independent elastic self and interaction energies for all pairwise and triplet combinations of α have been calculated and it is found that the 3-cluster combination that is experimentally observed most frequently has the lowest energy for the semicoherent state. The coarsening behavior of the delta distribution follows LSW kinetics after an initial transient, and has been modeled by phase field methods.

KW - Coarsening

KW - Self-accommodation

KW - Titanium alloys

KW - Variant selection

UR - https://www.scopus.com/pages/publications/84955606179

U2 - 10.1016/j.actamat.2016.01.023

DO - 10.1016/j.actamat.2016.01.023

M3 - 文章

AN - SCOPUS:84955606179

SN - 1359-6454

VL - 106

SP - 374

EP - 387

JO - Acta Materialia

JF - Acta Materialia

ER -

On variant distribution and coarsening behavior of the α phase in a metastable β titanium alloy

Abstract

Keywords

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