Deformation mechanisms during indentation of nanoscale metallic/ceramic laminated composites

K. K. Chawla, P. L. Sun, T. Y. Lin, J. P. Chu, D. R P Singh, Nikhilesh Chawla, Y. L. Shen

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

Abstract

Examples of metallic laminates abound in history. Metallic laminates made of steel have been used to make Samurai swords. The famous iron pillar of Delhi consists of laminae of wrought iron. Other mundane examples include laminates copper/aluminum and copper/stainless laminates for use in kitchen utensils. More recently, researchers have been investigating multilayered composites consisting of metal/metal and metal/ceramic laminates. Extensive work on ultra high carbon steel (UHCS) laminates that have compositions very similar to ancient Damascus or Wootz steels, showed excellent impact properties. Results from our work on Al/SiC nanolaminates made by physical vapor deposition are presented. TEM analysis shows no reaction product at the interface between Al and SiC and a high degree of flexibility of brittle SiC layers under indentation. Cracking under indentation started at a depth of 1000 nm in SiC layers. This occurred at sites where kinks formed in SiC which appeared to occur at sites of shear localization.

Original languageEnglish (US)
Title of host publicationICCM International Conferences on Composite Materials
Publication statusPublished - 2009
Event17th International Conference on Composite Materials, ICCM-17 - Edinburgh, United Kingdom
Duration: Jul 27 2009Jul 31 2009

Other

Other17th International Conference on Composite Materials, ICCM-17
CountryUnited Kingdom
CityEdinburgh
Period7/27/097/31/09

    Fingerprint

Keywords

  • Al/SiC
  • Indentation
  • Laminates
  • Ultra high carbon steel

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Chawla, K. K., Sun, P. L., Lin, T. Y., Chu, J. P., Singh, D. R. P., Chawla, N., & Shen, Y. L. (2009). Deformation mechanisms during indentation of nanoscale metallic/ceramic laminated composites. In ICCM International Conferences on Composite Materials