Influences of magnetic annealing on the grain growth in a cryoECAPed 1050 aluminum alloy

Authors

L Z. He, Northeastern University
Y H. Cao, Northeastern University
X T. Liu, Northeastern University
H T. Zhang, Northeastern University
P Wang, Xidian University
C Lu, University of WollongongFollow
Y P. Guo, Northeastern University
J Z. Cui, Northeastern University

RIS ID

82325

Publication Details

He, L. Z., Cao, Y. H., Liu, X. T., Zhang, H. T., Wang, P., Lu, C., Guo, Y. P. & Cui, J. Z. (2013). Influences of magnetic annealing on the grain growth in a cryoECAPed 1050 aluminum alloy. Materials Characterization, 84 188-195.

Abstract

The evolutions of hardness, grain microstructures and dislocations were investigated in cryoECAPed 1050 aluminum alloy after annealing at 423-673 K for 1 h without and with a magnetic field of 12 T. Compared to those of samples annealed without the magnetic field, the hardness of samples annealed with the magnetic field is lower at 423-573 K, and then higher at > 573 K. The high magnetic field accelerates the formation of dislocation cells or sub-grains. The interface dislocations frequently observed in materials deformed at high temperature were detected in samples annealed with the magnetic field at less than or equal to 423 K. The fraction of low angle boundaries in sample annealed with the field is 49 percent and 34 percent in sample annealed without the field even at 673 K. No abnormal grain growth occurs in samples annealed with the magnetic field due to the rapid consumption of the stored distortion energy during recovery.