Tensile and fatigue properties of the Bridgman directionally solidified Fe-Al-Ta eutectic

Chunjuan Cui; Yuanyuan Lai; Wei Liu; Pei Wang; Yanyun Liu; Cong Wang; Haijun Su

doi:10.1016/j.msea.2019.138257

Tensile and fatigue properties of the Bridgman directionally solidified Fe-Al-Ta eutectic

Chunjuan Cui, Yuanyuan Lai, Wei Liu, Pei Wang, Yanyun Liu, Cong Wang, Haijun Su

School of Materials Sience and Engineering

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

7 Scopus citations

Abstract

Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. High-oriented lamellar (or rod-like) Fe₂Ta(Al) phase is uniformly distributed into Fe(Al,Ta) matrix. Micro-hardness, tensile and high cycle fatigue properties of the Fe-Al-Ta eutectic at different solidification rates were systematically studied. Moreover, the fracture morphologies were observed by SEM. It is found that the mechanical properties of the Fe-Al-Ta eutectic composites are better than that of the as-cast Fe-Al-Ta eutectic alloy because of the directional heat flow. Finally, the strengthening mechanism of Fe-Al-Ta eutectic was discussed.

Original language	English
Article number	138257
Journal	Materials Science and Engineering: A
Volume	765
DOIs	https://doi.org/10.1016/j.msea.2019.138257
State	Published - 23 Sep 2019

Keywords

Directional solidification
Eutectic composite
Fracture morphology
High cycle fatigue
Micro-hardness
Tensile property

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10.1016/j.msea.2019.138257

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title = "Tensile and fatigue properties of the Bridgman directionally solidified Fe-Al-Ta eutectic",

abstract = "Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. High-oriented lamellar (or rod-like) Fe2Ta(Al) phase is uniformly distributed into Fe(Al,Ta) matrix. Micro-hardness, tensile and high cycle fatigue properties of the Fe-Al-Ta eutectic at different solidification rates were systematically studied. Moreover, the fracture morphologies were observed by SEM. It is found that the mechanical properties of the Fe-Al-Ta eutectic composites are better than that of the as-cast Fe-Al-Ta eutectic alloy because of the directional heat flow. Finally, the strengthening mechanism of Fe-Al-Ta eutectic was discussed.",

keywords = "Directional solidification, Eutectic composite, Fracture morphology, High cycle fatigue, Micro-hardness, Tensile property",

author = "Chunjuan Cui and Yuanyuan Lai and Wei Liu and Pei Wang and Yanyun Liu and Cong Wang and Haijun Su",

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doi = "10.1016/j.msea.2019.138257",

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TY - JOUR

T1 - Tensile and fatigue properties of the Bridgman directionally solidified Fe-Al-Ta eutectic

AU - Cui, Chunjuan

AU - Lai, Yuanyuan

AU - Liu, Wei

AU - Wang, Pei

AU - Liu, Yanyun

AU - Wang, Cong

AU - Su, Haijun

PY - 2019/9/23

Y1 - 2019/9/23

N2 - Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. High-oriented lamellar (or rod-like) Fe2Ta(Al) phase is uniformly distributed into Fe(Al,Ta) matrix. Micro-hardness, tensile and high cycle fatigue properties of the Fe-Al-Ta eutectic at different solidification rates were systematically studied. Moreover, the fracture morphologies were observed by SEM. It is found that the mechanical properties of the Fe-Al-Ta eutectic composites are better than that of the as-cast Fe-Al-Ta eutectic alloy because of the directional heat flow. Finally, the strengthening mechanism of Fe-Al-Ta eutectic was discussed.

AB - Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. High-oriented lamellar (or rod-like) Fe2Ta(Al) phase is uniformly distributed into Fe(Al,Ta) matrix. Micro-hardness, tensile and high cycle fatigue properties of the Fe-Al-Ta eutectic at different solidification rates were systematically studied. Moreover, the fracture morphologies were observed by SEM. It is found that the mechanical properties of the Fe-Al-Ta eutectic composites are better than that of the as-cast Fe-Al-Ta eutectic alloy because of the directional heat flow. Finally, the strengthening mechanism of Fe-Al-Ta eutectic was discussed.

KW - Directional solidification

KW - Eutectic composite

KW - Fracture morphology

KW - High cycle fatigue

KW - Micro-hardness

KW - Tensile property

UR - http://www.scopus.com/inward/record.url?scp=85070575626&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2019.138257

DO - 10.1016/j.msea.2019.138257

M3 - 文章

AN - SCOPUS:85070575626

SN - 0921-5093

VL - 765

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 138257

ER -

Tensile and fatigue properties of the Bridgman directionally solidified Fe-Al-Ta eutectic

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Keywords

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