About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Evolution of Supersaturated Metastable Phase in Sputtered CuFe Alloy |
| Author(s) |
Debargha Paul, Xuanyu Sheng, Ke Xu, Zhongxia Shang, Nicholas Richter, Yifan Zhang, Chang Liu, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Debargha Paul |
| Abstract Scope |
Equilibrium phase diagram of Cu and Fe predicts extremely limited solid solubility at room temperature with positive heat of mixing. However, nonequilibrium processing technique can create supersaturated solid solutions with the formation of metastable phases. Here, we report depositions of equal atomic percentages of Cu and Fe at different temperatures. Significant phase evolutions have been observed in CuFe system with variation in temperature. CuFe films deposited at room temperature exhibited equal intensities of FCC Cu and BCC Fe phases, while higher substrate temperature led to phase transformation of Cu to a metastable state. Defect generations have been observed in CuFe films. Changes in precipitation behavior of Cu and Fe with temperature have also been reported. This study provides insights on tailoring the supersaturated metastable phases by changing the substrate temperatures. In situ micromechanical tests have been carried out to understand the mechanical behavior of the metastable phase. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Copper / Nickel / Cobalt, Phase Transformations |