Hardness variation across a Zr57Ti5Cu 20Ni8Al10 bulk metallic glass

Rong Chen, Fuqian Yang, Guojiang Fan, Peter K. Liaw

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Microindentation tests were undertaken to study the nature of the indentation deformation of a Zr57Ti5Cu20Ni 8Al10 bulk metallic glasses (BMG). The tests focused on demonstrating the variation of the indentation behavior over the cross-section of the Zr-based BMG associated with the flow defects concentration from the solidification process. Microindentation tests were performed on a Micro-Combi Tester using a Vickers indenter on the circles of different radii with the same center as the specimen. It was found that the indentation hardness increases with the increase in the distance to the specimen center. The plastic energy dissipated in the indentation decreased with the increase in the distance to the center due to lower flow defect concentration. The results show the potential to evaluate the inhomogeneity in BMG using the indentation technique.

Original languageEnglish
Pages (from-to)2208-2211
Number of pages4
JournalJournal of Materials Science
Issue number6
StatePublished - Mar 2007

Bibliographical note

Funding Information:
Acknowledgement FY is grateful for support from the NSF Grant CMS-0508989 and the support from General Motors Corporation. PKL and GF are supported by the International Materials Institutes (IMI) program, DMR-0231320, with Dr. C. Huber as the program director.

ASJC Scopus subject areas

  • Materials Science (all)
  • Mechanics of Materials
  • Mechanical Engineering


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