Multicomponent Co-Ti-based superalloy with high solvus temperature and low lattice misfit

Xingjun Liu; Zhongfeng Chen; Yuechao Chen; Shuiyuan Yang; Yunwei Pan; Yong Lu; Shasha Qu; Yingju Li; Yuansheng Yang; Cuiping Wang

doi:10.1016/j.matlet.2020.128910

Multicomponent Co-Ti-based superalloy with high solvus temperature and low lattice misfit

Xingjun Liu
, Zhongfeng Chen
, Yuechao Chen
, Shuiyuan Yang
, Yunwei Pan
, Yong Lu^*
, Shasha Qu
, Yingju Li
, Yuansheng Yang
, Cuiping Wang

^*Corresponding author for this work

School of Materials Science and Engineering

Xiamen University
Harbin Institute of Technology Shenzhen
CAS - Institute of Metal Research

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

15 Scopus citations

Abstract

The microstructure, phase transformation temperature, γ/γ′ lattice misfit, and mechanical properties of Co-4Ti-10V-2W-2Ta (at. %, referred to as 2Ta) quinary alloy were investigated in detail. In addition, the results show that Ti, W, and Ta exhibit a strong partitioning tendency to the γ′ phase, resulting in a high γ′ solvus temperature (~1131 °C) in the studied alloy. The γ/γ′ lattice misfit of the 2Ta alloy was found to be ~+0.33%, which is much lower than those of Co-Ti binary and Co-Ti-Mo/W/Re/Cr ternary alloys. Moreover, the designed alloy also exhibits excellent yield strength (880 MPa at 750 °C), which is comparable to Co-12Ti-4Mo alloy.

Original language	English
Article number	128910
Journal	Materials Letters
Volume	284
DOIs	https://doi.org/10.1016/j.matlet.2020.128910
State	Published - 1 Feb 2021

Keywords

Metals and alloys
Microstructure
Thermal properties
Yield strength

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10.1016/j.matlet.2020.128910

Cite this

@article{d793bedb6ad64bcab4b297992557cac4,

title = "Multicomponent Co-Ti-based superalloy with high solvus temperature and low lattice misfit",

abstract = "The microstructure, phase transformation temperature, γ/γ′ lattice misfit, and mechanical properties of Co-4Ti-10V-2W-2Ta (at. \%, referred to as 2Ta) quinary alloy were investigated in detail. In addition, the results show that Ti, W, and Ta exhibit a strong partitioning tendency to the γ′ phase, resulting in a high γ′ solvus temperature (\textasciitilde{}1131 °C) in the studied alloy. The γ/γ′ lattice misfit of the 2Ta alloy was found to be \textasciitilde{}+0.33\%, which is much lower than those of Co-Ti binary and Co-Ti-Mo/W/Re/Cr ternary alloys. Moreover, the designed alloy also exhibits excellent yield strength (880 MPa at 750 °C), which is comparable to Co-12Ti-4Mo alloy.",

keywords = "Metals and alloys, Microstructure, Thermal properties, Yield strength",

author = "Xingjun Liu and Zhongfeng Chen and Yuechao Chen and Shuiyuan Yang and Yunwei Pan and Yong Lu and Shasha Qu and Yingju Li and Yuansheng Yang and Cuiping Wang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = feb,

day = "1",

doi = "10.1016/j.matlet.2020.128910",

language = "英语",

volume = "284",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Multicomponent Co-Ti-based superalloy with high solvus temperature and low lattice misfit

AU - Liu, Xingjun

AU - Chen, Zhongfeng

AU - Chen, Yuechao

AU - Yang, Shuiyuan

AU - Pan, Yunwei

AU - Lu, Yong

AU - Qu, Shasha

AU - Li, Yingju

AU - Yang, Yuansheng

AU - Wang, Cuiping

PY - 2021/2/1

Y1 - 2021/2/1

N2 - The microstructure, phase transformation temperature, γ/γ′ lattice misfit, and mechanical properties of Co-4Ti-10V-2W-2Ta (at. %, referred to as 2Ta) quinary alloy were investigated in detail. In addition, the results show that Ti, W, and Ta exhibit a strong partitioning tendency to the γ′ phase, resulting in a high γ′ solvus temperature (~1131 °C) in the studied alloy. The γ/γ′ lattice misfit of the 2Ta alloy was found to be ~+0.33%, which is much lower than those of Co-Ti binary and Co-Ti-Mo/W/Re/Cr ternary alloys. Moreover, the designed alloy also exhibits excellent yield strength (880 MPa at 750 °C), which is comparable to Co-12Ti-4Mo alloy.

AB - The microstructure, phase transformation temperature, γ/γ′ lattice misfit, and mechanical properties of Co-4Ti-10V-2W-2Ta (at. %, referred to as 2Ta) quinary alloy were investigated in detail. In addition, the results show that Ti, W, and Ta exhibit a strong partitioning tendency to the γ′ phase, resulting in a high γ′ solvus temperature (~1131 °C) in the studied alloy. The γ/γ′ lattice misfit of the 2Ta alloy was found to be ~+0.33%, which is much lower than those of Co-Ti binary and Co-Ti-Mo/W/Re/Cr ternary alloys. Moreover, the designed alloy also exhibits excellent yield strength (880 MPa at 750 °C), which is comparable to Co-12Ti-4Mo alloy.

KW - Metals and alloys

KW - Microstructure

KW - Thermal properties

KW - Yield strength

UR - https://www.scopus.com/pages/publications/85096192692

U2 - 10.1016/j.matlet.2020.128910

DO - 10.1016/j.matlet.2020.128910

M3 - 文章

AN - SCOPUS:85096192692

SN - 0167-577X

VL - 284

JO - Materials Letters

JF - Materials Letters

M1 - 128910

ER -

Multicomponent Co-Ti-based superalloy with high solvus temperature and low lattice misfit

Abstract

Keywords

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