Effect of heat treatment on microstructure of TiAl based alloy casting by suction casting process

Xi Cong Ye; Yan Qing Su; Jing Jie Guo; Li Hong Zhang; Zhi Jiang Hao

Effect of heat treatment on microstructure of TiAl based alloy casting by suction casting process

Xi Cong Ye^*
, Yan Qing Su
, Jing Jie Guo
, Li Hong Zhang
, Zhi Jiang Hao

^*Corresponding author for this work

China Three Gorges University
Harbin Institute of Technology
No.6 Institute of Project Planning and Research of Machinery Industry

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

4 Scopus citations

Abstract

TiAl based alloy sheet with fine grain size and fully lamellar microstructure was prepared by permanent mold vacuum suction casting technique, and the microstructure of the alloy sheet before and after heat treatment was examined. The results indicate that because of forced cooling and addition of alloy element, grain size of as-cast Ti-47Al-5Nb-0.5Si and Ti-47Al-2W-0.5Si alloys are about 20 μm with uneven lamellar microstructure, and there is serious segregation observed in the alloys. After heat treatment, the microstructure of the TiAl based alloys are coarsened, but the segregation is improved and the lamellar becomes smooth and stable.

Original language	English
Pages (from-to)	132-135
Number of pages	4
Journal	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume	33
Issue number	1
State	Published - Jan 2012
Externally published	Yes

Keywords

Bottom pouring
Heat treatment
Microstructure
Suction casting
TiAl based alloy

Cite this

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title = "Effect of heat treatment on microstructure of TiAl based alloy casting by suction casting process",

abstract = "TiAl based alloy sheet with fine grain size and fully lamellar microstructure was prepared by permanent mold vacuum suction casting technique, and the microstructure of the alloy sheet before and after heat treatment was examined. The results indicate that because of forced cooling and addition of alloy element, grain size of as-cast Ti-47Al-5Nb-0.5Si and Ti-47Al-2W-0.5Si alloys are about 20 μm with uneven lamellar microstructure, and there is serious segregation observed in the alloys. After heat treatment, the microstructure of the TiAl based alloys are coarsened, but the segregation is improved and the lamellar becomes smooth and stable.",

keywords = "Bottom pouring, Heat treatment, Microstructure, Suction casting, TiAl based alloy",

author = "Ye, \{Xi Cong\} and Su, \{Yan Qing\} and Guo, \{Jing Jie\} and Zhang, \{Li Hong\} and Hao, \{Zhi Jiang\}",

year = "2012",

month = jan,

language = "英语",

volume = "33",

pages = "132--135",

journal = "Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment",

issn = "1009-6264",

publisher = "Chinese Mechanical Engineering Society",

number = "1",

}

TY - JOUR

T1 - Effect of heat treatment on microstructure of TiAl based alloy casting by suction casting process

AU - Ye, Xi Cong

AU - Su, Yan Qing

AU - Guo, Jing Jie

AU - Zhang, Li Hong

AU - Hao, Zhi Jiang

PY - 2012/1

Y1 - 2012/1

N2 - TiAl based alloy sheet with fine grain size and fully lamellar microstructure was prepared by permanent mold vacuum suction casting technique, and the microstructure of the alloy sheet before and after heat treatment was examined. The results indicate that because of forced cooling and addition of alloy element, grain size of as-cast Ti-47Al-5Nb-0.5Si and Ti-47Al-2W-0.5Si alloys are about 20 μm with uneven lamellar microstructure, and there is serious segregation observed in the alloys. After heat treatment, the microstructure of the TiAl based alloys are coarsened, but the segregation is improved and the lamellar becomes smooth and stable.

AB - TiAl based alloy sheet with fine grain size and fully lamellar microstructure was prepared by permanent mold vacuum suction casting technique, and the microstructure of the alloy sheet before and after heat treatment was examined. The results indicate that because of forced cooling and addition of alloy element, grain size of as-cast Ti-47Al-5Nb-0.5Si and Ti-47Al-2W-0.5Si alloys are about 20 μm with uneven lamellar microstructure, and there is serious segregation observed in the alloys. After heat treatment, the microstructure of the TiAl based alloys are coarsened, but the segregation is improved and the lamellar becomes smooth and stable.

KW - Bottom pouring

KW - Heat treatment

KW - Microstructure

KW - Suction casting

KW - TiAl based alloy

UR - https://www.scopus.com/pages/publications/84863031401

M3 - 文章

AN - SCOPUS:84863031401

SN - 1009-6264

VL - 33

SP - 132

EP - 135

JO - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

JF - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

IS - 1

ER -

Effect of heat treatment on microstructure of TiAl based alloy casting by suction casting process

Abstract

Keywords

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