Cavitation damage in the superplastic Zn-22% Al-0.5% Cu alloy

Caceres, CH and Silvetti, SP (1987) Cavitation damage in the superplastic Zn-22% Al-0.5% Cu alloy. Acta Metallurgica, 35 4: 897-906. doi:10.1016/0001-6160(87)90168-4

Author Caceres, CH
Silvetti, SP
Title Cavitation damage in the superplastic Zn-22% Al-0.5% Cu alloy
Journal name Acta Metallurgica
ISSN 0001-6160
Publication date 1987-01-01
Year available 1987
Sub-type Article (original research)
DOI 10.1016/0001-6160(87)90168-4
Open Access Status
Volume 35
Issue 4
Start page 897
End page 906
Total pages 10
Place of publication OXFORD
Language eng
Subject 2200 Engineering
Abstract A quantitative analysis of cavitation damage in a superplastic ZnAl alloy has been made, and results contrasted with theoretical models. Metallography indicates that cavities nucleate in Fe-rich particles and that fracture occurs at relatively low cavitation levels (6-12%) after local strains of about 6.5. The level of damage at any given strain is higher while cavities are larger and more round the lower the deformation rate. Experimental data can be reasonably fitted to mechanistic models for cavity growth assuming coupling between boundary diffusion and matrix plasticity as the mechanism of growth, if grain growth hardening and an enhancement of the diffusive contribution to growth due to the very small grain size are taken into account.
Keyword Metallurgy & Metallurgical Engineering
Metallurgy & Metallurgical Engineering
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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