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On the Variation of Hardness Due to Uniaxial and Equi-Biaxial Residual Surface Stresses at Elastic-Plastic Indentation
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.), Solid Mechanics (Div.).ORCID iD: 0000-0001-6232-8819
2018 (English)In: Journal of materials engineering and performance (Print), ISSN 1059-9495, E-ISSN 1544-1024, Vol. 27, no 6, p. 3168-3173Article in journal (Refereed) Published
Abstract [en]

It is established long since that the material hardness is independent of residual stresses at predominantly plastic deformation close to the contact region at indentation. Recently though, it has been shown that when elastic and plastic deformations are of equal magnitude this invariance is lost. For materials such as ceramics and polymers, this will complicate residual stress determination but can also, if properly understood, provide additional important information for performing such a task. Indeed, when the residual stresses are equi-biaxial, the situation is quite well understood, but additional efforts have to be made to understand the mechanical behavior in other loading states. Presently therefore, the variation of hardness, due to residual stresses, is examined at a uniaxial stress state. Correlation with global indentation quantities is analyzed, discussed and compared to corresponding equi-biaxial results. Cone indentation of elastic-perfectly plastic materials is considered.

Place, publisher, year, edition, pages
SPRINGER , 2018. Vol. 27, no 6, p. 3168-3173
Keywords [en]
correlation, equi-biaxial stresses, residual stresses, sharp indentation, uniaxial stresses
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-231719DOI: 10.1007/s11665-018-3393-8ISI: 000435416000065Scopus ID: 2-s2.0-85046654118OAI: oai:DiVA.org:kth-231719DiVA, id: diva2:1239769
Conference
International Conference on Emerging Trends in Nanoscience and Nanotechnology (ICETINN), MAR 16-18, 2017, Sikkim Manipal Inst Technol, Majitar, INDIA
Note

QC 20180817

Available from: 2018-08-17 Created: 2018-08-17 Last updated: 2018-11-13Bibliographically approved

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Larsson, Per-Lennart

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