A new mechanism of dynamic phase transformations in an isothermal forged beta-gamma intermetallic alloy

Zhengang Zhang; Shoujiang Qu; Guorong Cui; Aihan Feng; Jun Shen; Daolun Chen

doi:10.3390/ma12172787

A new mechanism of dynamic phase transformations in an isothermal forged beta-gamma intermetallic alloy

Zhengang Zhang
, Shoujiang Qu^*
, Guorong Cui
, Aihan Feng
, Jun Shen
, Daolun Chen

^*Corresponding author for this work

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

3 Scopus citations

Abstract

A new mechanism of dynamic phase transformations of α ₂ ↔ γ in an isothermally forged -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 α₂ 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.

Original language	English
Article number	2787
Journal	Materials
Volume	12
Issue number	7
DOIs	https://doi.org/10.3390/ma12172787
State	Published - 2019
Externally published	Yes

Keywords

Microstructure
Phase transformation
Precipitation
Titanium aluminide

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10.3390/ma12172787

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@article{673516b2caeb4f87b35ab0996861b53b,

title = "A new mechanism of dynamic phase transformations in an isothermal forged beta-gamma intermetallic alloy",

abstract = "A new mechanism of dynamic phase transformations of α 2 ↔ γ in an isothermally forged -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 α2 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.",

keywords = "Microstructure, Phase transformation, Precipitation, Titanium aluminide",

author = "Zhengang Zhang and Shoujiang Qu and Guorong Cui and Aihan Feng and Jun Shen and Daolun Chen",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors.",

year = "2019",

doi = "10.3390/ma12172787",

language = "英语",

volume = "12",

journal = "Materials",

issn = "1996-1944",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "7",

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T1 - A new mechanism of dynamic phase transformations in an isothermal forged beta-gamma intermetallic alloy

AU - Zhang, Zhengang

AU - Qu, Shoujiang

AU - Cui, Guorong

AU - Feng, Aihan

AU - Shen, Jun

AU - Chen, Daolun

PY - 2019

Y1 - 2019

N2 - A new mechanism of dynamic phase transformations of α 2 ↔ γ in an isothermally forged -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 α2 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.

AB - A new mechanism of dynamic phase transformations of α 2 ↔ γ in an isothermally forged -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 α2 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.

KW - Microstructure

KW - Phase transformation

KW - Precipitation

KW - Titanium aluminide

UR - https://www.scopus.com/pages/publications/85071863173

U2 - 10.3390/ma12172787

DO - 10.3390/ma12172787

M3 - 文章

AN - SCOPUS:85071863173

SN - 1996-1944

VL - 12

JO - Materials

JF - Materials

IS - 7

M1 - 2787

ER -

A new mechanism of dynamic phase transformations in an isothermal forged beta-gamma intermetallic alloy

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Keywords

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