A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy

A new mechanism of dynamic phase transformations of α(2) ↔ γ in an isothermally forged γ-TiAl-based alloy that occur simultaneously during a short-term exposure at 1000 °C is identified in this study. In the heating process, γ phase significantly decreases through a phase transformation of γ → α(2),...

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Detalles Bibliográficos
Autores principales: Zhang, Zhengang, Qu, Shoujiang, Cui, Guorong, Feng, Aihan, Shen, Jun, Chen, Daolun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747777/
https://www.ncbi.nlm.nih.gov/pubmed/31480208
http://dx.doi.org/10.3390/ma12172787
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author Zhang, Zhengang
Qu, Shoujiang
Cui, Guorong
Feng, Aihan
Shen, Jun
Chen, Daolun
author_facet Zhang, Zhengang
Qu, Shoujiang
Cui, Guorong
Feng, Aihan
Shen, Jun
Chen, Daolun
author_sort Zhang, Zhengang
collection PubMed
description A new mechanism of dynamic phase transformations of α(2) ↔ γ in an isothermally forged γ-TiAl-based alloy that occur simultaneously during a short-term exposure at 1000 °C is identified in this study. In the heating process, γ phase significantly decreases through a phase transformation of γ → α(2), while new γ lamellae are precipitated in the interior of equiaxed grains of α(2) phase through a phase transformation of α(2) → γ. The reasons for the presence of these two inverse phase transformations α(2) ↔ γ occurring simultaneously are discussed.
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spelling pubmed-67477772019-09-27 A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy Zhang, Zhengang Qu, Shoujiang Cui, Guorong Feng, Aihan Shen, Jun Chen, Daolun Materials (Basel) Article A new mechanism of dynamic phase transformations of α(2) ↔ γ in an isothermally forged γ-TiAl-based alloy that occur simultaneously during a short-term exposure at 1000 °C is identified in this study. In the heating process, γ phase significantly decreases through a phase transformation of γ → α(2), while new γ lamellae are precipitated in the interior of equiaxed grains of α(2) phase through a phase transformation of α(2) → γ. The reasons for the presence of these two inverse phase transformations α(2) ↔ γ occurring simultaneously are discussed. MDPI 2019-08-30 /pmc/articles/PMC6747777/ /pubmed/31480208 http://dx.doi.org/10.3390/ma12172787 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Zhengang
Qu, Shoujiang
Cui, Guorong
Feng, Aihan
Shen, Jun
Chen, Daolun
A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title_full A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title_fullStr A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title_full_unstemmed A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title_short A New Mechanism of Dynamic Phase Transformations in An Isothermal Forged Beta–Gamma Intermetallic Alloy
title_sort new mechanism of dynamic phase transformations in an isothermal forged beta–gamma intermetallic alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747777/
https://www.ncbi.nlm.nih.gov/pubmed/31480208
http://dx.doi.org/10.3390/ma12172787
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