Micro-scale strength evaluation for bonding interface of cold sprayed coatings

Yuji Ichikawa, Ryotaro Tokoro, Kazuhiro Ogawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A micro-scale interface strength evaluation technique is essential for evaluating cold-sprayed materials. A focused ion beam (FIB) micro strength test enables the micro-scale evaluation of the interface mechanical properties. However, this technique cannot be used to measure the strain in a specimen. This work discusses the possibility of strain measurement by combining this technique with image analysis in a newly designed test setup. Moreover, the micro stress-strain curve for cold-sprayed copper was obtained. This improved method enables us to measure stress with a precision of 5 MPa and strain with a precision of 0.015. It was determined that some local regions can deform plastically, which could not be determined with conventional micro- and macro-scale evaluation methods. These results proved that the coating is non-uniform, while also revealing various microstructure and mechanical properties.

Original languageEnglish
Title of host publicationTHERMEC 2016
EditorsChristof Sommitsch, Mihail Ionescu, Brajendra Mishra, Brajendra Mishra, Ernst Kozeschnik, T. Chandra
PublisherTrans Tech Publications Ltd
Pages795-800
Number of pages6
ISBN (Print)9783035711295
DOIs
Publication statusPublished - 2017 Jan 1
Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
Duration: 2016 May 292016 Jun 3

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
CountryAustria
CityGraz
Period16/5/2916/6/3

Keywords

  • Cold spray
  • FIB
  • Mechanical testing
  • Micro structure
  • Tensile test

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Micro-scale strength evaluation for bonding interface of cold sprayed coatings'. Together they form a unique fingerprint.

  • Cite this

    Ichikawa, Y., Tokoro, R., & Ogawa, K. (2017). Micro-scale strength evaluation for bonding interface of cold sprayed coatings. In C. Sommitsch, M. Ionescu, B. Mishra, B. Mishra, E. Kozeschnik, & T. Chandra (Eds.), THERMEC 2016 (pp. 795-800). (Materials Science Forum; Vol. 879). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.879.795