The Brittle Fracture of Polycrystalline Zinc

GM Hughes, GE Smith, PEJ Flewitt, AG Crocker

Research output: Contribution to journalArticle (Academic Journal)peer-review


In polycrystalline materials grain boundaries provide an important contribution to the resistance to the propagation of both brittle and ductile cracks. In this paper we describe experimental measurements of brittle cracks developed within both small punch and matchstick test specimens of polycrystalline hcp zinc. These specimens were tested over the temperature range 77 to 423K. Fractography undertaken using focussed ion beam imaging provides detail of the propagation from grain to grain and across {10-12}twins of (0001) basal and {10-10} prismatic cleavage cracks. The results are discussed by comparison with the predictions from previously described 3-D geometric modelling applied to this hcp polycrystalline material.
Translated title of the contributionThe Brittle Fracture of Polycrystalline Zinc
Original languageEnglish
Pages (from-to)41 - 44
Number of pages4
JournalKey Engineering Materials
Publication statusPublished - 2007

Bibliographical note

Publisher: Trans Tech Publications, Switzerland


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