Micromechanics of machining and wear in hard and brittle materials

Hard and brittle solids with covalent/ionic bonding are used in a wide range of modern‐day manufacturing technologies. Optimization of a shaping process can shorten manufacturing time and cost of component production, and at the same time extend component longevity. The same process can contribute t...

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Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 104; no. 1; pp. 5 - 22
Main Authors Lawn, Brian R., Borrero‐Lopez, Oscar, Huang, Han, Zhang, Yu
Format Journal Article
LanguageEnglish
Published United States Wiley Subscription Services, Inc 01.01.2021
Subjects
Brittle materials
Brittleness
deformation
Ductile-brittle transition
fatigue
fracture
Indentation
Machining
Micromechanics
microstructure
Optimization
Wear
fatigue
indentation
microstructure
machining
wear
deformation
fracture
micromechanics
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Summary:Hard and brittle solids with covalent/ionic bonding are used in a wide range of modern‐day manufacturing technologies. Optimization of a shaping process can shorten manufacturing time and cost of component production, and at the same time extend component longevity. The same process can contribute to wear and fatigue degradation in service. Educated development of advanced finishing protocols for this class of solids requires a comprehensive understanding of damage mechanisms at small‐scale contacts from a materials perspective. The basic science of attendant deformation and removal modes in contact events is here analyzed and discussed in the context of brittle and ductile machining and severe and mild wear. Essentials of brittle–ductile transitions in micro‐ and nano‐indentation fields are outlined, with distinctions between blunt and sharp contacts and axial and sliding loading. The central role of microstructure in material removal modes is highlighted. Pathways to future research—experimental, analytical, and computational—are indicated.
Bibliography:Funding information
Financial support for this program was provided by the Junta de Extremadura, Spain, FEDER/ERDF (grants IB16139 and GR18149) and the Ministry of Science and Innovation, spain (grant PID2019‐105377RB‐I00); the Australian Research Council (ARC) through the Discovery Projects Scheme (DP180103275); and by the US National Institute of Dental and Craniofacial Research (grant Nos. R01DE017925, R01DE026279, and R01DE026772) and the US National Science Foundation (grant No. CMMI‐0758530).
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ISSN:0002-7820
1551-2916
DOI:10.1111/jace.17502