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Effect of tool wear on quality in drilling of titaniumalloy Ti6Al4V, Part II: Microstructure andMicrohardness
University West, Department of Engineering Science, Trollhättan, Sweden.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0001-9331-7354
GKN Aerospace Engine Systems AB, Trollhättan, Sweden.
2017 (English)In: High speed machining, E-ISSN 2299-3975, Vol. 3, p. 11-22Article in journal (Refereed) Published
Abstract [en]

Drilling of Ti6Al4V with worn tools can introduce superficial and easily measured features such as increase of cutting forces, entry and exit burrs and surface quality issues and defects. Such issues were presented in the part I of this paper. In part II, subsurface quality alterations,such as changes of the microstructure and microhardness variation is considered by preparing metallographic sections and measurement, mapping of the depth of grain deformation, and microhardness in these sections. Drastic changes in the microstructure and microhardness were found in sections drilled with drills with large wear lands,particularly in the dry cutting tests. These measurements emphasize the importance of detection of tool wear and ensuring coolant flow in drilling of holes in titanium components.

Place, publisher, year, edition, pages
Warsaw, Poland: De Gruyter Open, 2017. Vol. 3, p. 11-22
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-11876DOI: 10.1515/hsm-2017-0002OAI: oai:DiVA.org:hv-11876DiVA: diva2:1162303
Available from: 2017-12-04 Created: 2017-12-04 Last updated: 2017-12-04Bibliographically approved

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Eynian, Mahdi

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