Study of Strain characterization and microstructure evolution under compression stress in Al-Li alloy

DOI

10.2991/macmc-17.2018.83How to use a DOI?

Keywords

Al-Li alloy, strain, microstructure, DIC.

Abstract

The strain variation and microstructure evolution of 2060-T8 alloy during bending are investigated by Micro-hardness point method (MHPM) and Digital Image Correlation (DIC), electron backscattered diffraction (EBSD). Experimental result shows DIC method can be used to characterize the strain micro-region on average and it can also represent the local strain tensor in the micro-region compared to the traditional MHPM. The strain is unevenly distributed in grains due to the mis-orientation between the adjacent grains difference, the mis-orientation has a blocking effect on the slip of dislocations during deformation in polycrystalline sample. The result shows the mis-orientation between adjacent grains is smaller with larger strain, while the mis-orientation between adjacent grains is larger with smaller strain. The degree of grain division in the process of deformation is related to the strain in this region, a new microstructure such as band structure is observed in grains with larger strain.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiao Jin
AU  - GuoDong Zhang
AU  - Fei Xue
AU  - YanFen Zhao
PY  - 2018/01
DA  - 2018/01
TI  - Study of Strain characterization and microstructure evolution under compression stress in Al-Li alloy
BT  - Proceedings of the 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017)
PB  - Atlantis Press
SP  - 447
EP  - 455
SN  - 2352-5401
UR  - https://doi.org/10.2991/macmc-17.2018.83
DO  - 10.2991/macmc-17.2018.83
ID  - Jin2018/01
ER  -