Synthesis and mechanical properties of high-purity Cr2AlC ceramic

Guobing Ying; Xiaodong He; Mingwei Li; Wenbo Han; Fei He; Shanyi Du

doi:10.1016/j.msea.2010.12.039

Synthesis and mechanical properties of high-purity Cr₂AlC ceramic

Guobing Ying
, Xiaodong He^*
, Mingwei Li
, Wenbo Han
, Fei He
, Shanyi Du

^*Corresponding author for this work

Harbin Institute of Technology

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

66 Scopus citations

Abstract

High-purity and dense Cr₂AlC has been successfully fabricated by hot-pressing, using Cr, Al and graphite as raw materials. Delamination, kink bands, monolamellar kink, transgranular crack and transgranular fracture of bulk Cr₂AlC are found during the room-temperature test. The density, Vickers hardness, flexural strength, Young's modulus, compressive strength and fracture toughness of the Cr₂AlC are 5.17g/cm³, 4.9GPa, 469±27MPa, 282GPa, 949±22MPa and 6.22±0.26MPam^1/2, respectively. The strength of Cr₂AlC could be greatly improved by second phase of Cr₇C₃. And the slipping of basal planes and slip system cold be hindered by Cr₇C₃, thus resulting in a lower toughness.

Original language	English
Pages (from-to)	2635-2640
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	528
Issue number	6
DOIs	https://doi.org/10.1016/j.msea.2010.12.039
State	Published - 15 Mar 2011

Keywords

Delamination
Kink band
Mechanical properties

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10.1016/j.msea.2010.12.039

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title = "Synthesis and mechanical properties of high-purity Cr2AlC ceramic",

abstract = "High-purity and dense Cr2AlC has been successfully fabricated by hot-pressing, using Cr, Al and graphite as raw materials. Delamination, kink bands, monolamellar kink, transgranular crack and transgranular fracture of bulk Cr2AlC are found during the room-temperature test. The density, Vickers hardness, flexural strength, Young's modulus, compressive strength and fracture toughness of the Cr2AlC are 5.17g/cm3, 4.9GPa, 469±27MPa, 282GPa, 949±22MPa and 6.22±0.26MPam1/2, respectively. The strength of Cr2AlC could be greatly improved by second phase of Cr7C3. And the slipping of basal planes and slip system cold be hindered by Cr7C3, thus resulting in a lower toughness.",

keywords = "Delamination, Kink band, Mechanical properties",

author = "Guobing Ying and Xiaodong He and Mingwei Li and Wenbo Han and Fei He and Shanyi Du",

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doi = "10.1016/j.msea.2010.12.039",

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TY - JOUR

T1 - Synthesis and mechanical properties of high-purity Cr2AlC ceramic

AU - Ying, Guobing

AU - He, Xiaodong

AU - Li, Mingwei

AU - Han, Wenbo

AU - He, Fei

AU - Du, Shanyi

PY - 2011/3/15

Y1 - 2011/3/15

N2 - High-purity and dense Cr2AlC has been successfully fabricated by hot-pressing, using Cr, Al and graphite as raw materials. Delamination, kink bands, monolamellar kink, transgranular crack and transgranular fracture of bulk Cr2AlC are found during the room-temperature test. The density, Vickers hardness, flexural strength, Young's modulus, compressive strength and fracture toughness of the Cr2AlC are 5.17g/cm3, 4.9GPa, 469±27MPa, 282GPa, 949±22MPa and 6.22±0.26MPam1/2, respectively. The strength of Cr2AlC could be greatly improved by second phase of Cr7C3. And the slipping of basal planes and slip system cold be hindered by Cr7C3, thus resulting in a lower toughness.

AB - High-purity and dense Cr2AlC has been successfully fabricated by hot-pressing, using Cr, Al and graphite as raw materials. Delamination, kink bands, monolamellar kink, transgranular crack and transgranular fracture of bulk Cr2AlC are found during the room-temperature test. The density, Vickers hardness, flexural strength, Young's modulus, compressive strength and fracture toughness of the Cr2AlC are 5.17g/cm3, 4.9GPa, 469±27MPa, 282GPa, 949±22MPa and 6.22±0.26MPam1/2, respectively. The strength of Cr2AlC could be greatly improved by second phase of Cr7C3. And the slipping of basal planes and slip system cold be hindered by Cr7C3, thus resulting in a lower toughness.

KW - Delamination

KW - Kink band

KW - Mechanical properties

UR - https://www.scopus.com/pages/publications/79151469744

U2 - 10.1016/j.msea.2010.12.039

DO - 10.1016/j.msea.2010.12.039

M3 - 文章

AN - SCOPUS:79151469744

SN - 0921-5093

VL - 528

SP - 2635

EP - 2640

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 6

ER -

Synthesis and mechanical properties of high-purity Cr₂AlC ceramic

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Keywords

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