| Issue |
MATEC Web Conf.
Volume 67, 2016
International Symposium on Materials Application and Engineering (SMAE 2016)
|
|
|---|---|---|
| Article Number | 05028 | |
| Number of page(s) | 6 | |
| Section | Chapter 5 Metallurgical Engineering | |
| DOI | https://doi.org/10.1051/matecconf/20166705028 | |
| Published online | 29 July 2016 | |
In-situ Investigation of the Fracture Behaviors of 2195-T8 Aluminum-Lithium alloy
1 Beijing Institute of Aeronautical Materials, Beijing 100095, China
2 Beijing Engineering Research Center for Advanced Aluminum Alloy, Beijing 100095, China
a wangliangisme@163.com
b haomin00@163.com
c Lee_ai@sina.com
c Hong ChenG@163.com
* Corresponding author: wangliangisme@163.com
In this paper, the tensile crack initiation and propagation behavior of 2195-T8 Aluminum-Lithium alloy was studied by in situ scanning electron microscope observation at room temperature. It was found that cracks initiated at second phases which propagated along the grain boundaries only as T1 phases could retard crack growth inside grains. With further increase of strain, within the grain a large number of slip bands were produced, resulting in the deflection of the grains, which leaded to transgranular fracture at last. SEM examination show both intergranular and transgranular fracture surface morphology indicating that the 2195-T8 alloy revealed a mix mechanism for the fracture.
© The Authors, published by EDP Sciences, 2016
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