FeCo-based multiphase composites with high strength and large plastic deformation

R. Li; G. Liu; M. Stoica; J. Eckert

doi:10.1016/j.intermet.2009.07.003

FeCo-based multiphase composites with high strength and large plastic deformation

R. Li
, G. Liu
, M. Stoica
, J. Eckert

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

22 Scopus citations

Abstract

A family of FeCo-based multiphase composites with a microstructure consisting of nano-lamellar phase strengthened α-(Fe,Co) dendritic cores surrounded by a network of reinforcement phases of ultrafine eutectics was produced by copper mold casting. The hypoeutectic composites exhibit a high yield stress, which is up to 7 times higher than the equiatomic FeCo alloy, and plastic deformation up to 18% during compressive test. Multiscale o-(Fe,Co)₃(B,C) reinforcement phases are responsible for the remarkable improvement of strength, and α-(Fe,Co) dendrites play a key role to inhibit the propagation of microcracks sourced from the eutectics. Furthermore, a fracture model for explaining the relationship between fracture strain and morphologic characteristics of the composites is presented.

Original language	English
Pages (from-to)	134-139
Number of pages	6
Journal	Intermetallics
Volume	18
Issue number	1
DOIs	https://doi.org/10.1016/j.intermet.2009.07.003
State	Published - Jan 2010
Externally published	Yes

Keywords

A. Composites
B. Fracture mode
B. Mechanical properties at ambient temperature
C. Rapid solidification processing
D. Microstructure

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10.1016/j.intermet.2009.07.003

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title = "FeCo-based multiphase composites with high strength and large plastic deformation",

abstract = "A family of FeCo-based multiphase composites with a microstructure consisting of nano-lamellar phase strengthened α-(Fe,Co) dendritic cores surrounded by a network of reinforcement phases of ultrafine eutectics was produced by copper mold casting. The hypoeutectic composites exhibit a high yield stress, which is up to 7 times higher than the equiatomic FeCo alloy, and plastic deformation up to 18\% during compressive test. Multiscale o-(Fe,Co)3(B,C) reinforcement phases are responsible for the remarkable improvement of strength, and α-(Fe,Co) dendrites play a key role to inhibit the propagation of microcracks sourced from the eutectics. Furthermore, a fracture model for explaining the relationship between fracture strain and morphologic characteristics of the composites is presented.",

keywords = "A. Composites, B. Fracture mode, B. Mechanical properties at ambient temperature, C. Rapid solidification processing, D. Microstructure",

author = "R. Li and G. Liu and M. Stoica and J. Eckert",

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doi = "10.1016/j.intermet.2009.07.003",

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volume = "18",

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T1 - FeCo-based multiphase composites with high strength and large plastic deformation

AU - Li, R.

AU - Liu, G.

AU - Stoica, M.

AU - Eckert, J.

PY - 2010/1

Y1 - 2010/1

N2 - A family of FeCo-based multiphase composites with a microstructure consisting of nano-lamellar phase strengthened α-(Fe,Co) dendritic cores surrounded by a network of reinforcement phases of ultrafine eutectics was produced by copper mold casting. The hypoeutectic composites exhibit a high yield stress, which is up to 7 times higher than the equiatomic FeCo alloy, and plastic deformation up to 18% during compressive test. Multiscale o-(Fe,Co)3(B,C) reinforcement phases are responsible for the remarkable improvement of strength, and α-(Fe,Co) dendrites play a key role to inhibit the propagation of microcracks sourced from the eutectics. Furthermore, a fracture model for explaining the relationship between fracture strain and morphologic characteristics of the composites is presented.

AB - A family of FeCo-based multiphase composites with a microstructure consisting of nano-lamellar phase strengthened α-(Fe,Co) dendritic cores surrounded by a network of reinforcement phases of ultrafine eutectics was produced by copper mold casting. The hypoeutectic composites exhibit a high yield stress, which is up to 7 times higher than the equiatomic FeCo alloy, and plastic deformation up to 18% during compressive test. Multiscale o-(Fe,Co)3(B,C) reinforcement phases are responsible for the remarkable improvement of strength, and α-(Fe,Co) dendrites play a key role to inhibit the propagation of microcracks sourced from the eutectics. Furthermore, a fracture model for explaining the relationship between fracture strain and morphologic characteristics of the composites is presented.

KW - A. Composites

KW - B. Fracture mode

KW - B. Mechanical properties at ambient temperature

KW - C. Rapid solidification processing

KW - D. Microstructure

UR - https://www.scopus.com/pages/publications/70349775536

U2 - 10.1016/j.intermet.2009.07.003

DO - 10.1016/j.intermet.2009.07.003

M3 - 文章

AN - SCOPUS:70349775536

SN - 0966-9795

VL - 18

SP - 134

EP - 139

JO - Intermetallics

JF - Intermetallics

IS - 1

ER -

FeCo-based multiphase composites with high strength and large plastic deformation

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Keywords

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