Abstract
The effects of the fatigue deformation on the localized deformation of a ZCAP-3 bulk metallic glass (BMG) were studied using the nanoindentation technique. A localized mechanical hardening was observed in the ZCAP-3 BMG between the shear bands in the fatigue-damaged zone. In contrast to the indentations of the BMG made far away from the fatigue-damaged zone, there was no indentation size effect. Both the reduced contact modulus and the indentation hardness were larger than those corresponding to the indentations of the ZCAP-3 BMG in the undamaged zone. These observations revealed the possible effects of local heating and stress-induced atomic rearrangements (i.e., inelastic deformation) on the reduction of the free volume in the BMG from the propagation of the fatigue crack.
| Original language | English |
|---|---|
| Pages (from-to) | 2346-2352 |
| Number of pages | 7 |
| Journal | Journal of Materials Research |
| Volume | 24 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2009 |
Bibliographical note
Funding Information:F.Q. Yang is grateful for support from the National Science Foundation (NSF) Grants CMS-0508989 and CMMI 0800018. P.K. Liaw and G.Y. Wang are supported by the International Materials Institutes (IMI) program, DMR-0231320, with Dr. C. Huber as the program director.
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering