Abstract

The dynamic compression properties of two aluminum alloys 7A62 and 7085 were tested using Split Hopkinson Pressure Bar (SHPB ) technique. The effects of strain rate on yield stress and dynamic energy absorption characteristics of the two materials were analyzed. The critical strain rate and the maximum energy absorbed before shear failure occurred of the two materials were given. The results showed that both the two materials show a strong strain rate dependence effect, and the yield stress increased with increasing strain rate. The aluminum alloy 7085 has a lower yield stress than 7A62 under the same strain rate level. But it has a better energy absorption characteristic than 7A62 for its good plasticity.

Details

Title
Study on strain rate dependence and energy absorption characteristics of two aluminum alloys 7A62 and 7085
Author
Wan, M M 1 ; Wang, Y L 1 ; Wu, H L 1 ; Wang, S L 2 ; Li, B W 2 ; Mu, X M 1 

1  Inner Mongolia Metal Material Research Institute, Yantai 264003, Shandong, China 
2  Military Representative Office of the Army Equipment Department in Nanjing, Nanjing 210000, Jiangsu, China 
Publication year
2020
Publication date
Mar 2020
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1742-6596/1507/3/032067
ProQuest document ID
2598094239
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.