Dynamic Behavior of Additively Manufactured FeCoCrNi High Entropy Alloy
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Microstructures
3.2. Mechanical Properties
3.3. Deformed Microstructure
4. Discussion
4.1. Strain Rate Sensitivity
4.2. Microstructural Evolution
4.3. Dynamic Behavior
5. Conclusions
- (1)
- The As-SLM FeCoCrNi HEA showed a more excellent combination of toughness and yield stress than previously reported alloys due to the high density of deformation microbands and twins.
- (2)
- The dislocation cell structures contributed to high local stress concentration and facilitated the formation of microbands at strain rates of 1000/s and 3000/s. With further increase of strain rate, the deformation mechanism changed to twins.
- (3)
- The AS-SLM HEA showed a low strain rate sensitivity between strain rates of 1000/s and 3000/s due to the collective dislocation nucleation mechanism. At higher strain rates, the strain rate sensitivity increased rapidly.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Du, M.; Liu, B.; Liu, Y.; Yang, Y. Dynamic Behavior of Additively Manufactured FeCoCrNi High Entropy Alloy. Metals 2023, 13, 75. https://doi.org/10.3390/met13010075
Du M, Liu B, Liu Y, Yang Y. Dynamic Behavior of Additively Manufactured FeCoCrNi High Entropy Alloy. Metals. 2023; 13(1):75. https://doi.org/10.3390/met13010075
Chicago/Turabian StyleDu, Meng, Bin Liu, Yong Liu, and Yong Yang. 2023. "Dynamic Behavior of Additively Manufactured FeCoCrNi High Entropy Alloy" Metals 13, no. 1: 75. https://doi.org/10.3390/met13010075