Mechanical behavior of ultrafine-grained materials under combined static and dynamic loadings

Y. Z. Guo, X. Y. Sun, J. G. Li, X. Yu, Y. L. Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

Ultrafine-grained (UFG) materials have extensive prospects for engineering application due to their excellent mechanical properties. However, the grain size decrease reduces their strain hardening ability and makes UFG materials more susceptible to deformation instability such as shear localization. In most cases, critical shear strain is taken as the criterion for formation of shear localization under impact loading or adiabatic shear band (ASB). Recently, some researchers found that the formation of ASB was determined only by the dynamic loading process and had nothing to do with its static loading history. They proposed for coarse-grained metals a dynamic stored energy-based criterion for ASB and verified it by some experiments. In this study, we will focus on the shear localization behavior of UFG metals such as UFG titanium and magnesium alloy AZ31. Quasi-static loading and dynamic loading will be applied on the same specimen alternately. The shear localization behavior will be analyzed and the criterion of its formation will be evaluated.

源语言英语
主期刊名DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading
编辑Ezio Cadoni
出版商EDP Sciences
ISBN(电子版)9782759818174
DOI
出版状态已出版 - 7 9月 2015
活动11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015 - Lugano, 瑞士
期限: 7 9月 201511 9月 2015

出版系列

姓名EPJ Web of Conferences
94
ISSN(印刷版)2101-6275
ISSN(电子版)2100-014X

会议

会议11th International Conference on the Mechanical and Physical Behaviour of Materials Under Dynamic Loading, DYMAT 2015
国家/地区瑞士
Lugano
时期7/09/1511/09/15

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