Interaction between the Dislocations and Precipitates in Fe-40Ni Alloy during Stress Relaxation

Abstract:

Transmission electron microscopy (TEM) was used to study the interaction between the dislocations and strain induced precipitates during relaxation process after deformation in Fe-40Ni alloy. The experimental results demonstrate that the dislocation density is very high and distribute randomly before relaxation. As the relaxation time increasing, dislocation walls will form gradually by polygonization. The strain induced precipitates retards their progress. In the final relaxation stage, most dislocations get rid of pinning of precipitates and the dislocation walls have developed into subgrains with large size.

• Periodical: Advanced Materials Research (Volume 661)
• Pages: 137-140
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.661.137
• Online since: February 2013
• Authors: Xiao Juan Zhang, Shao Qiang Yuan
• Keywords: Dislocation Walls, Relaxation, Strain Induced Precipitates

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