Microstructural evolution and refinement of as-forged Ti–43Al–9V–Y alloy after quenching and tempering

Lin Chen; Junpin Lin; Xiangjun Xu; Yuyong Chen; Fantao Kong; Yongfeng Liang

doi:10.1016/j.intermet.2019.106576

Microstructural evolution and refinement of as-forged Ti–43Al–9V–Y alloy after quenching and tempering

Lin Chen
, Junpin Lin
, Xiangjun Xu
, Yuyong Chen
, Fantao Kong
, Yongfeng Liang^*

^*Corresponding author for this work

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

12 Scopus citations

Abstract

It is shown that a uniform and refined fully lamellar microstructure can be generated by tempering the quenched samples in the single α region of as-forged Ti–43Al–9V–Y alloy. The refining effect was mainly connected with the quenched microstructures especially for their substructure, grain size and the residual β particles after the quenching. A series of β-decomposed products: martensite plate, massive α and coarsened α lath with increasing grain size were produced due to the decreasing cooling rate during the wedge-shaped sample quenched into iced brine. In addition, the decomposition of β directly to γ has also been observed during the quenching with different cooling rate. The lamellar colony size can be controlled in the range of 25–50 μm after tempering.

Original language	English
Article number	106576
Journal	Intermetallics
Volume	113
DOIs	https://doi.org/10.1016/j.intermet.2019.106576
State	Published - Oct 2019
Externally published	Yes

Keywords

Microstructure refinement
Phase transformation
Quenching
TiAl alloys

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10.1016/j.intermet.2019.106576

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@article{3718edcd94674adca45460746cb45959,

title = "Microstructural evolution and refinement of as-forged Ti–43Al–9V–Y alloy after quenching and tempering",

abstract = "It is shown that a uniform and refined fully lamellar microstructure can be generated by tempering the quenched samples in the single α region of as-forged Ti–43Al–9V–Y alloy. The refining effect was mainly connected with the quenched microstructures especially for their substructure, grain size and the residual β particles after the quenching. A series of β-decomposed products: martensite plate, massive α and coarsened α lath with increasing grain size were produced due to the decreasing cooling rate during the wedge-shaped sample quenched into iced brine. In addition, the decomposition of β directly to γ has also been observed during the quenching with different cooling rate. The lamellar colony size can be controlled in the range of 25–50 μm after tempering.",

keywords = "Microstructure refinement, Phase transformation, Quenching, TiAl alloys",

author = "Lin Chen and Junpin Lin and Xiangjun Xu and Yuyong Chen and Fantao Kong and Yongfeng Liang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = oct,

doi = "10.1016/j.intermet.2019.106576",

language = "英语",

volume = "113",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Microstructural evolution and refinement of as-forged Ti–43Al–9V–Y alloy after quenching and tempering

AU - Chen, Lin

AU - Lin, Junpin

AU - Xu, Xiangjun

AU - Chen, Yuyong

AU - Kong, Fantao

AU - Liang, Yongfeng

PY - 2019/10

Y1 - 2019/10

N2 - It is shown that a uniform and refined fully lamellar microstructure can be generated by tempering the quenched samples in the single α region of as-forged Ti–43Al–9V–Y alloy. The refining effect was mainly connected with the quenched microstructures especially for their substructure, grain size and the residual β particles after the quenching. A series of β-decomposed products: martensite plate, massive α and coarsened α lath with increasing grain size were produced due to the decreasing cooling rate during the wedge-shaped sample quenched into iced brine. In addition, the decomposition of β directly to γ has also been observed during the quenching with different cooling rate. The lamellar colony size can be controlled in the range of 25–50 μm after tempering.

AB - It is shown that a uniform and refined fully lamellar microstructure can be generated by tempering the quenched samples in the single α region of as-forged Ti–43Al–9V–Y alloy. The refining effect was mainly connected with the quenched microstructures especially for their substructure, grain size and the residual β particles after the quenching. A series of β-decomposed products: martensite plate, massive α and coarsened α lath with increasing grain size were produced due to the decreasing cooling rate during the wedge-shaped sample quenched into iced brine. In addition, the decomposition of β directly to γ has also been observed during the quenching with different cooling rate. The lamellar colony size can be controlled in the range of 25–50 μm after tempering.

KW - Microstructure refinement

KW - Phase transformation

KW - Quenching

KW - TiAl alloys

UR - https://www.scopus.com/pages/publications/85070077881

U2 - 10.1016/j.intermet.2019.106576

DO - 10.1016/j.intermet.2019.106576

M3 - 文章

AN - SCOPUS:85070077881

SN - 0966-9795

VL - 113

JO - Intermetallics

JF - Intermetallics

M1 - 106576

ER -

Microstructural evolution and refinement of as-forged Ti–43Al–9V–Y alloy after quenching and tempering

Abstract

Keywords

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