Phase transformation in TC21 alloy during continuous heating

Yi Hong Wang; Hongchao Kou; Hui Chang; Zhi Shou Zhu; Xiao Fan Su; Jinshan Li; Lian Zhou

doi:10.1016/j.jallcom.2008.04.035

Phase transformation in TC21 alloy during continuous heating

Yi Hong Wang, Hongchao Kou, Hui Chang, Zhi Shou Zhu, Xiao Fan Su, Jinshan Li, Lian Zhou

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

56 Scopus citations

Abstract

A dilatometry for investigating phase transformation in TC21 alloy was observed at constant heating rate. These experiments were conducted at a computer-controlled horizontal pushrod dilatometer to monitor the thermal expansion caused by the transformation as a function of heating time under different heating rates. Microstructures at different stages of the transformation had been observed by scanning electron microscopy. Results showed that phase transformation in TC21 alloy during continuous heating included three stages, retained β → acicular α, acicular α → β and equiaxed α → β. The rates of the alloy expansion decreased after an increase, and then increased intensively, and finally, it decreased to a constant. Moreover, the activation energy value related to the α → β transformation in TC21 alloy was evaluated based on the JMA equation. Crown

Original language	English
Pages (from-to)	252-256
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	472
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.04.035
State	Published - 20 Mar 2009
Externally published	Yes

Keywords

Dilatometry
Heating
Phase transformation
Titanium alloy

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10.1016/j.jallcom.2008.04.035

Cite this

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title = "Phase transformation in TC21 alloy during continuous heating",

abstract = "A dilatometry for investigating phase transformation in TC21 alloy was observed at constant heating rate. These experiments were conducted at a computer-controlled horizontal pushrod dilatometer to monitor the thermal expansion caused by the transformation as a function of heating time under different heating rates. Microstructures at different stages of the transformation had been observed by scanning electron microscopy. Results showed that phase transformation in TC21 alloy during continuous heating included three stages, retained β → acicular α, acicular α → β and equiaxed α → β. The rates of the alloy expansion decreased after an increase, and then increased intensively, and finally, it decreased to a constant. Moreover, the activation energy value related to the α → β transformation in TC21 alloy was evaluated based on the JMA equation. Crown",

keywords = "Dilatometry, Heating, Phase transformation, Titanium alloy",

author = "Wang, {Yi Hong} and Hongchao Kou and Hui Chang and Zhu, {Zhi Shou} and Su, {Xiao Fan} and Jinshan Li and Lian Zhou",

year = "2009",

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TY - JOUR

T1 - Phase transformation in TC21 alloy during continuous heating

AU - Wang, Yi Hong

AU - Kou, Hongchao

AU - Chang, Hui

AU - Zhu, Zhi Shou

AU - Su, Xiao Fan

AU - Li, Jinshan

AU - Zhou, Lian

PY - 2009/3/20

Y1 - 2009/3/20

N2 - A dilatometry for investigating phase transformation in TC21 alloy was observed at constant heating rate. These experiments were conducted at a computer-controlled horizontal pushrod dilatometer to monitor the thermal expansion caused by the transformation as a function of heating time under different heating rates. Microstructures at different stages of the transformation had been observed by scanning electron microscopy. Results showed that phase transformation in TC21 alloy during continuous heating included three stages, retained β → acicular α, acicular α → β and equiaxed α → β. The rates of the alloy expansion decreased after an increase, and then increased intensively, and finally, it decreased to a constant. Moreover, the activation energy value related to the α → β transformation in TC21 alloy was evaluated based on the JMA equation. Crown

AB - A dilatometry for investigating phase transformation in TC21 alloy was observed at constant heating rate. These experiments were conducted at a computer-controlled horizontal pushrod dilatometer to monitor the thermal expansion caused by the transformation as a function of heating time under different heating rates. Microstructures at different stages of the transformation had been observed by scanning electron microscopy. Results showed that phase transformation in TC21 alloy during continuous heating included three stages, retained β → acicular α, acicular α → β and equiaxed α → β. The rates of the alloy expansion decreased after an increase, and then increased intensively, and finally, it decreased to a constant. Moreover, the activation energy value related to the α → β transformation in TC21 alloy was evaluated based on the JMA equation. Crown

KW - Dilatometry

KW - Heating

KW - Phase transformation

KW - Titanium alloy

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U2 - 10.1016/j.jallcom.2008.04.035

DO - 10.1016/j.jallcom.2008.04.035

M3 - 文章

AN - SCOPUS:61349102479

SN - 0925-8388

VL - 472

SP - 252

EP - 256

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Phase transformation in TC21 alloy during continuous heating

Abstract

Keywords

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