Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy
1
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
2
Southwest Technology and Engineering Research Institute, Chongqing 400039, China
*
Authors to whom correspondence should be addressed.
Materials 2019, 12(1), 117; https://doi.org/10.3390/ma12010117
Received: 30 November 2018
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Revised: 20 December 2018
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Accepted: 25 December 2018
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Published: 31 December 2018
(This article belongs to the Section Corrosion)
The effect of recrystallization annealing on corrosion behavior of Ta-4%W alloy was studied. It is found that the deformed sample contains high dense dislocations and dislocation boundaries. During annealing, these dislocations and dislocation boundaries are replaced by recrystallizing grains until the alloy is fully recrystallized. Both the anodic dissolution and the cathodic activity is much more blocked. The corrosion potential gradual shift towards negative values and corrosion current density decrease, while polarization resistance increases after annealing, indicating enhanced corrosion resistance of the alloy. Such an enhancement is caused by the increase of low-Σ coincide site lattice boundaries and decrease of dislocations and dislocation boundaries.
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MDPI and ACS Style
Ma, G.; He, Q.; Luo, X.; Wu, G.; Chen, Q. Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy. Materials 2019, 12, 117. https://doi.org/10.3390/ma12010117
AMA Style
Ma G, He Q, Luo X, Wu G, Chen Q. Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy. Materials. 2019; 12(1):117. https://doi.org/10.3390/ma12010117
Chicago/Turabian StyleMa, Guoqiang, Qiongyao He, Xuan Luo, Guilin Wu, and Qiang Chen. 2019. "Effect of Recrystallization Annealing on Corrosion Behavior of Ta-4%W Alloy" Materials 12, no. 1: 117. https://doi.org/10.3390/ma12010117
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