Ductility enhancement at elevated temperatures in a ZK60-based composite

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

1 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)261-268
Journal / PublicationMaterials Science Forum
Volume233-234
Publication statusPublished - 1997
Externally publishedYes

Abstract

A magnesium-based composite, ZK60/SiC/17p, has recently been shown to exhibit superplasticity at high strain rates. In this paper, two types of composite, as-received (AR) and thermomechanically processed (TMP), were investigated. Both composites exhibited superplasticity. As a result of the additional thermomechanical processing, the TMP composite had a more uniform microstructure and as showed a superplastic elongation in excess of 450% at a strain rate of 0.1 s-1, twice as great as that obtained from the AR composite. Cavitation behavior was characterized. Volume fractions of cavities were measured for the two composites as a function of strain. It was found that the cavity growth rate in the AR material was much greater than that in the TMP material. This may explain the observed larger elongation in the TMP composite as compared to the AR composite.

Research Area(s)

  • Cavity Growth, Elongation, High Strain Rate Superplasticity, Magnesium-Based Composite, Thermomechanical Process

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Ductility enhancement at elevated temperatures in a ZK60-based composite. / Mukai, T.; Nieh, T. G.; Higashi, K.
In: Materials Science Forum, Vol. 233-234, 1997, p. 261-268.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review