Microstructure and fracture toughness of the Bridgman directionally solidified Fe-Al-Ta eutectic at different solidification rates

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

doi:10.1016/j.jmst.2019.09.041

Microstructure and fracture toughness of the Bridgman directionally solidified Fe-Al-Ta eutectic at different solidification rates

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

School of Materials Sience and Engineering

Xi'an University of Architecture and Technology
Shaanxi Engineering Technology Research Center for Wear-resisting Materials

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

20 Scopus citations

Abstract

Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. Solidification microstructure transforms from regular eutectic to eutectic colony with the increase of the solidification rate. The solid/liquid interface of Fe-Al-Ta eutectic evolves from planar interface to cellular interface with the increase of the solidification rate. In addition, three-point bending method was adopted to study the room-temperature fracture toughness of the as-cast Fe-Al-Ta eutectic alloy and the Fe-Al-Ta eutectic composites. Moreover, the fracture morphologies, the crack propagation path and the strengthening mechanism of Fe-Al-Ta eutectic were discussed.

Original language	English
Pages (from-to)	63-74
Number of pages	12
Journal	Journal of Materials Science and Technology
Volume	42
DOIs	https://doi.org/10.1016/j.jmst.2019.09.041
State	Published - 1 Apr 2020

Keywords

Directional solidification
Eutectic composite
Fracture morphology
Fracture toughness
Solid/liquid interface

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10.1016/j.jmst.2019.09.041

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title = "Microstructure and fracture toughness of the Bridgman directionally solidified Fe-Al-Ta eutectic at different solidification rates",

abstract = "Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. Solidification microstructure transforms from regular eutectic to eutectic colony with the increase of the solidification rate. The solid/liquid interface of Fe-Al-Ta eutectic evolves from planar interface to cellular interface with the increase of the solidification rate. In addition, three-point bending method was adopted to study the room-temperature fracture toughness of the as-cast Fe-Al-Ta eutectic alloy and the Fe-Al-Ta eutectic composites. Moreover, the fracture morphologies, the crack propagation path and the strengthening mechanism of Fe-Al-Ta eutectic were discussed.",

keywords = "Directional solidification, Eutectic composite, Fracture morphology, Fracture toughness, Solid/liquid interface",

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

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year = "2020",

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doi = "10.1016/j.jmst.2019.09.041",

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TY - JOUR

T1 - Microstructure and fracture toughness of the Bridgman directionally solidified Fe-Al-Ta eutectic at different solidification rates

AU - Cui, Chunjuan

AU - Wang, Cong

AU - Wang, Pei

AU - Liu, Wei

AU - Lai, Yuanyuan

AU - Deng, Li

AU - Su, Haijun

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. Solidification microstructure transforms from regular eutectic to eutectic colony with the increase of the solidification rate. The solid/liquid interface of Fe-Al-Ta eutectic evolves from planar interface to cellular interface with the increase of the solidification rate. In addition, three-point bending method was adopted to study the room-temperature fracture toughness of the as-cast Fe-Al-Ta eutectic alloy and the Fe-Al-Ta eutectic composites. Moreover, the fracture morphologies, the crack propagation path and the strengthening mechanism of Fe-Al-Ta eutectic were discussed.

AB - Fe-Al-Ta eutectic composites were obtained by a modified Bridgman directional solidification technique at different solidification rates. Solidification microstructure transforms from regular eutectic to eutectic colony with the increase of the solidification rate. The solid/liquid interface of Fe-Al-Ta eutectic evolves from planar interface to cellular interface with the increase of the solidification rate. In addition, three-point bending method was adopted to study the room-temperature fracture toughness of the as-cast Fe-Al-Ta eutectic alloy and the Fe-Al-Ta eutectic composites. Moreover, the fracture morphologies, the crack propagation path and the strengthening mechanism of Fe-Al-Ta eutectic were discussed.

KW - Directional solidification

KW - Eutectic composite

KW - Fracture morphology

KW - Fracture toughness

KW - Solid/liquid interface

UR - https://www.scopus.com/pages/publications/85079329634

U2 - 10.1016/j.jmst.2019.09.041

DO - 10.1016/j.jmst.2019.09.041

M3 - 文章

AN - SCOPUS:85079329634

SN - 1005-0302

VL - 42

SP - 63

EP - 74

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Microstructure and fracture toughness of the Bridgman directionally solidified Fe-Al-Ta eutectic at different solidification rates

Abstract

Keywords

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