In situ study of fracture behavior of ultrafine WC–Co cemented carbide

Xingwei Liu; Haibin Wang; Lihua Wang; Chao Hou; Xiaoyan Song; Xuemei Liu; Xiaodong Han

doi:10.1080/21663831.2016.1208300

In situ study of fracture behavior of ultrafine WC–Co cemented carbide

Xingwei Liu, Haibin Wang, Lihua Wang, Chao Hou, Xiaoyan Song^*, Xuemei Liu, Xiaodong Han

^*Corresponding author for this work

Beijing University of Technology

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

26 Citations (Scopus)

Abstract

The fracture behavior of ultrafine WC–Co cemented carbide was demonstrated by in situ tensile tests in a transmission electron microscope. Using two kinds of cemented carbide samples with and without previously introduced microcracks, the process from deformation till fracture was studied. Particularly, the development and interaction of dislocations within Co and WC, as well as the alternation of dislocation motion between the two phases, was demonstrated, and the features of crack propagation in cemented carbide were disclosed. The finding of the dislocation characteristics and its correlation with the fracture behavior proposed the mechanisms of the ultrahigh fracture strength of the cemented carbide.

Original language	English
Pages (from-to)	55-60
Number of pages	6
Journal	Materials Research Letters
Volume	5
Issue number	1
DOIs	https://doi.org/10.1080/21663831.2016.1208300
Publication status	Published - 2 Jan 2017
Externally published	Yes

Keywords

In situ observation
cemented carbide
crack propagation
dislocation
fracture mechanism

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10.1080/21663831.2016.1208300

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abstract = "The fracture behavior of ultrafine WC–Co cemented carbide was demonstrated by in situ tensile tests in a transmission electron microscope. Using two kinds of cemented carbide samples with and without previously introduced microcracks, the process from deformation till fracture was studied. Particularly, the development and interaction of dislocations within Co and WC, as well as the alternation of dislocation motion between the two phases, was demonstrated, and the features of crack propagation in cemented carbide were disclosed. The finding of the dislocation characteristics and its correlation with the fracture behavior proposed the mechanisms of the ultrahigh fracture strength of the cemented carbide.",

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T1 - In situ study of fracture behavior of ultrafine WC–Co cemented carbide

AU - Liu, Xingwei

AU - Wang, Haibin

AU - Wang, Lihua

AU - Hou, Chao

AU - Song, Xiaoyan

AU - Liu, Xuemei

AU - Han, Xiaodong

PY - 2017/1/2

Y1 - 2017/1/2

N2 - The fracture behavior of ultrafine WC–Co cemented carbide was demonstrated by in situ tensile tests in a transmission electron microscope. Using two kinds of cemented carbide samples with and without previously introduced microcracks, the process from deformation till fracture was studied. Particularly, the development and interaction of dislocations within Co and WC, as well as the alternation of dislocation motion between the two phases, was demonstrated, and the features of crack propagation in cemented carbide were disclosed. The finding of the dislocation characteristics and its correlation with the fracture behavior proposed the mechanisms of the ultrahigh fracture strength of the cemented carbide.

AB - The fracture behavior of ultrafine WC–Co cemented carbide was demonstrated by in situ tensile tests in a transmission electron microscope. Using two kinds of cemented carbide samples with and without previously introduced microcracks, the process from deformation till fracture was studied. Particularly, the development and interaction of dislocations within Co and WC, as well as the alternation of dislocation motion between the two phases, was demonstrated, and the features of crack propagation in cemented carbide were disclosed. The finding of the dislocation characteristics and its correlation with the fracture behavior proposed the mechanisms of the ultrahigh fracture strength of the cemented carbide.

KW - In situ observation

KW - cemented carbide

KW - crack propagation

KW - dislocation

KW - fracture mechanism

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U2 - 10.1080/21663831.2016.1208300

DO - 10.1080/21663831.2016.1208300

M3 - Article

AN - SCOPUS:84981715348

SN - 2166-3831

VL - 5

SP - 55

EP - 60

JO - Materials Research Letters

JF - Materials Research Letters

IS - 1

ER -

In situ study of fracture behavior of ultrafine WC–Co cemented carbide

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Keywords

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