Retaining meta-stable fcc-Cr phase by restraining nucleation of equilibrium bcc-Cr phase in CuCrZrTi alloys during ageing
Source abstract
Abstract
Abstract Cr-rich precipitates with a bcc crystal structure are an equilibrium phase in high-strength Cu–Cr alloys. Metastable fcc Cr-rich precipitates that are coherent with a fcc Cu matrix were retained in a Cu–Cr–Zr–Ti alloy during ageing. Atom-probe tomography analysis revealed that Cr atoms exist in the core of the Cr-rich precipitates, whereas Zr atoms segregate on the periphery. Fcc Cr-rich precipitates are prone to form because of the low nucleation barrier. A rapid diffusion of Ti atoms in the matrix stimulates the fcc Cr-rich nuclei growth. Resulting solute-lean zones hinder further nucleation of equilibrium bcc Cr-rich precipitates.
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Research context
OpenAlex topics: Microstructure and mechanical properties · Aluminum Alloy Microstructure Properties · Advanced materials and composites
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References (23)
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1. Effect of chromium and zirconium content on structure, strength and electrical conductivity of Cu-Cr-Zr alloys after high pressure torsion10.1016/j.matlet.2017.04.039 ↗
2. Effect of rolling and aging processes on microstructure and properties of Cu-Cr-Zr alloy10.1016/j.msea.2017.05.114 ↗
3. Effect of direct current pulses on mechanical and electrical properties of aged Cu-Cr-Zr alloys10.1016/j.matdes.2015.12.013 ↗
4. Comparative study of approaches to assess damage in thermally fatigued CuCrZr alloy10.1016/j.jnucmat.2016.03.011 ↗
5. The phase transformation and strengthening of a Cu-0.71wt.%Cr alloy10.1016/j.jallcom.2017.03.069 ↗
6. Precipitation and aging in high-conductivity Cu-Cr alloys with additions of zirconium and magnesium10.1179/mst.1985.1.4.270 ↗
7. Effect of a small addition of zirconium on hot ductility of a Cu-Cr alloy10.1002/chin.198901011 ↗
8. Atomic scale investigation of Cr precipitation in copper10.1016/j.actamat.2012.01.038 ↗
9. Nanostructural evolution of Cr-rich precipitates in a Cu-Cr-Zr alloy during heat treatment studied by 3 dimensional atom probe10.2320/matertrans.MBW200736 ↗
10. 3D-AP and position annihilation study of precipitation behavior in Cu-Cr-Zr10.1016/j.jnucmat.2008.12.266 ↗
11. Effect of small alloying additions on behaviour of rapidly solidified Cu-Cr alloys
12. Strength of Cu-Zr-Cr alloy relating to the aged structures10.2320/jinstmet1952.33.5_628 ↗
13. Thermomechanical fatigue behavior of annealed Cu-Cr-Zr-Ti alloy in argon atmosphere10.1016/j.msea.2017.08.017 ↗
14. Effect of temperature on low cycle fatigue behavior of annealed Cu-Cr-Zr-Ti alloy in argon atmosphere10.1016/j.msea.2017.03.075 ↗
15. Microstructural investigations into the low cycle fatigue deformation of a Cu-Cr-Zr-Ti alloy10.1016/j.msea.2013.06.034 ↗
16. Influence of cold deformation and Ti element on the microstructure and properties of Cu-Cr system alloys10.1557/jmr.2015.143 ↗
17. Morphology of precipitates in Cu-Cr-Ti alloys: spherical or cubic?10.1007/s11664-016-4789-6 ↗
18. Geometric Phase Analysis of high resolution electron microscope images
19. A theoretical study of the phase equilibria in the Cu-Cr-Zr system10.1016/0925-8388(94)06029-0 ↗
20. Thermodynamic modelling of Laves phases in the Cr-Hf and Cr-Ti system: reassessment using first-principles results10.1016/j.calphad.2010.03.003 ↗
21. Thermodynamic assessment of the Cu-Ti-Zr system. III. Cu-Ti-Zr system10.1007/s11106-008-9062-y ↗
22. Assessment of the atomic mobilities in fcc Cu-Fe and Cu-Ti alloys10.1007/s11669-010-9819-0 ↗
23. Kaur · 1989 · vol. 1