Continuous cooling phase transformation of Ti-45Al-5Nb(-0.3Y) alloys

Fantao Kong; Shulong Xiao; Yuyong Chen; Baohui Li

Continuous cooling phase transformation of Ti-45Al-5Nb(-0.3Y) alloys

Fantao Kong^*
, Shulong Xiao
, Yuyong Chen
, Baohui Li

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

5 Scopus citations

Abstract

Cooling rate has drastic effects on the continuous cooling transformation of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys. Furnace cooling (FC) leads to the fully lamellar microstructure. Air cooling suppresses the lamellar transformation by the α→γ m reaction. Oil cooling leads to the extremely fine lamellar microstructure. At a higher cooling rate (such as water cooling), the α₂ phases are predominant. By air cooling a feathery structure disappears and the α₂ phase increases. By water cooling, the extremely fine lamellar regions located at initial α₂ grain boundaries are smaller and increase for the Ti-45Al-5Nb-0.3Y alloy. Y addition has slight effect on the phase transformation of Ti-45Al-Nb alloy.

Original language	English
Pages (from-to)	25-28
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	38
Issue number	1
State	Published - Jan 2009

Keywords

Phase transformation
Structure
TiAl alloy
Treatment

Cite this

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title = "Continuous cooling phase transformation of Ti-45Al-5Nb(-0.3Y) alloys",

abstract = "Cooling rate has drastic effects on the continuous cooling transformation of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys. Furnace cooling (FC) leads to the fully lamellar microstructure. Air cooling suppresses the lamellar transformation by the α→γ m reaction. Oil cooling leads to the extremely fine lamellar microstructure. At a higher cooling rate (such as water cooling), the α2 phases are predominant. By air cooling a feathery structure disappears and the α2 phase increases. By water cooling, the extremely fine lamellar regions located at initial α2 grain boundaries are smaller and increase for the Ti-45Al-5Nb-0.3Y alloy. Y addition has slight effect on the phase transformation of Ti-45Al-Nb alloy.",

keywords = "Phase transformation, Structure, TiAl alloy, Treatment",

author = "Fantao Kong and Shulong Xiao and Yuyong Chen and Baohui Li",

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T1 - Continuous cooling phase transformation of Ti-45Al-5Nb(-0.3Y) alloys

AU - Kong, Fantao

AU - Xiao, Shulong

AU - Chen, Yuyong

AU - Li, Baohui

PY - 2009/1

Y1 - 2009/1

N2 - Cooling rate has drastic effects on the continuous cooling transformation of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys. Furnace cooling (FC) leads to the fully lamellar microstructure. Air cooling suppresses the lamellar transformation by the α→γ m reaction. Oil cooling leads to the extremely fine lamellar microstructure. At a higher cooling rate (such as water cooling), the α2 phases are predominant. By air cooling a feathery structure disappears and the α2 phase increases. By water cooling, the extremely fine lamellar regions located at initial α2 grain boundaries are smaller and increase for the Ti-45Al-5Nb-0.3Y alloy. Y addition has slight effect on the phase transformation of Ti-45Al-Nb alloy.

AB - Cooling rate has drastic effects on the continuous cooling transformation of Ti-45Al-5Nb and Ti-45Al-5Nb-0.3Y alloys. Furnace cooling (FC) leads to the fully lamellar microstructure. Air cooling suppresses the lamellar transformation by the α→γ m reaction. Oil cooling leads to the extremely fine lamellar microstructure. At a higher cooling rate (such as water cooling), the α2 phases are predominant. By air cooling a feathery structure disappears and the α2 phase increases. By water cooling, the extremely fine lamellar regions located at initial α2 grain boundaries are smaller and increase for the Ti-45Al-5Nb-0.3Y alloy. Y addition has slight effect on the phase transformation of Ti-45Al-Nb alloy.

KW - Phase transformation

KW - Structure

KW - TiAl alloy

KW - Treatment

UR - https://www.scopus.com/pages/publications/62249099832

M3 - 文章

AN - SCOPUS:62249099832

SN - 1002-185X

VL - 38

SP - 25

EP - 28

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 1

ER -

Continuous cooling phase transformation of Ti-45Al-5Nb(-0.3Y) alloys

Abstract

Keywords

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