A note on threshold velocity criteria for modelling the solid particle erosion of WC/Co MMCs

B.D. Jana, M.M. Stack

Research output: Contribution to journalArticle

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Abstract

The threshold velocity for erosion of a ductile material is considered as the velocity required for initiation of plastic deformation in the substrate. For a brittle material, it defines the velocity required to nucleate a median crack in the elastic/plastic interface beneath the indentation. By invoking models for the solid particle erosion of ductile and brittle materials from the literature, together with a set of criteria based on threshold velocity calculations for erosion of the individual components, various predictions of erosion behaviour of WC/Co MMCs have been made. Qualitative agreement was found between the model predictions and various trends of the solid particle erosion behaviour of WC/Co cermets in the literature. The implications of the findings in addressing some of the puzzling trends of the solid particle erosion of MMCs in the literature, and how such insights may result in a reconsideration of some "classical" solid particle erosion relationships, are addressed in this paper.
Original languageEnglish
Pages (from-to)439-445
Number of pages7
JournalWear
Volume270
Issue number7-8
Early online date15 Dec 2010
DOIs
Publication statusPublished - 10 Mar 2011

Fingerprint

Erosion
erosion
thresholds
Modeling
brittle materials
Brittle Materials
Brittleness
trends
cermets
Indentation
Cermets
Plastic Deformation
predictions
indentation
Prediction Model
plastic deformation
Plastics
Plastic deformation
Crack
plastics

Keywords

  • threshold velocity
  • modelling
  • erosion
  • corrosion

Cite this

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abstract = "The threshold velocity for erosion of a ductile material is considered as the velocity required for initiation of plastic deformation in the substrate. For a brittle material, it defines the velocity required to nucleate a median crack in the elastic/plastic interface beneath the indentation. By invoking models for the solid particle erosion of ductile and brittle materials from the literature, together with a set of criteria based on threshold velocity calculations for erosion of the individual components, various predictions of erosion behaviour of WC/Co MMCs have been made. Qualitative agreement was found between the model predictions and various trends of the solid particle erosion behaviour of WC/Co cermets in the literature. The implications of the findings in addressing some of the puzzling trends of the solid particle erosion of MMCs in the literature, and how such insights may result in a reconsideration of some {"}classical{"} solid particle erosion relationships, are addressed in this paper.",
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A note on threshold velocity criteria for modelling the solid particle erosion of WC/Co MMCs. / Jana, B.D.; Stack, M.M.

In: Wear, Vol. 270, No. 7-8, 10.03.2011, p. 439-445.

Research output: Contribution to journalArticle

TY - JOUR

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AB - The threshold velocity for erosion of a ductile material is considered as the velocity required for initiation of plastic deformation in the substrate. For a brittle material, it defines the velocity required to nucleate a median crack in the elastic/plastic interface beneath the indentation. By invoking models for the solid particle erosion of ductile and brittle materials from the literature, together with a set of criteria based on threshold velocity calculations for erosion of the individual components, various predictions of erosion behaviour of WC/Co MMCs have been made. Qualitative agreement was found between the model predictions and various trends of the solid particle erosion behaviour of WC/Co cermets in the literature. The implications of the findings in addressing some of the puzzling trends of the solid particle erosion of MMCs in the literature, and how such insights may result in a reconsideration of some "classical" solid particle erosion relationships, are addressed in this paper.

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