Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting
Source abstract
Abstract
Abstract A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High Entropy Alloys Studies · High-Temperature Coating Behaviors · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
Show source-provided references
1. A critical review of high entropy alloys and related concepts10.1016/j.actamat.2016.08.081 ↗
2. Reasons for the superior mechanical properties of medium-entropy CrCoNi compared to high-entropy CrMnFeCoNi10.1016/j.actamat.2017.02.036 ↗
3. Microstructures and properties of high-entropy alloys10.1016/j.pmatsci.2013.10.001 ↗
4. Alloy design, micromechanical and macromechanical properties of CoCrFeNiTax eutectic high entropy alloys10.1016/j.jallcom.2017.12.015 ↗
5. Microstructure and properties of novel CoCrFeNiTax eutectic high-entropy alloys10.1016/j.jallcom.2017.11.075 ↗
6. Effects of Nb additions on structure and mechanical properties evolution of CoCrNi medium-entropy alloy10.1166/mex.2019.1506 ↗
7. Length-scale-dependent deformation mechanisms in incoherent metallic multilayered composites10.1016/j.actamat.2005.06.025 ↗
8. Structural refinement and nanomechanical response of laser remelted Al-Al2Cu lamellar eutectic10.1016/j.msea.2017.08.105 ↗
9. A selective laser melting and solution heat treatment refined Al–12Si alloy with a controllable ultrafine eutectic microstructure and 25% tensile ductility10.1016/j.actamat.2015.05.017 ↗
10. Rapidly solidified AlCu alloys—II. Calculation of the microstructure selection map
11. The Cr−Nb (Chromium-Niobium) system10.1007/BF02867811 ↗
12. Experimental reinvestigation of the Co–Nb phase diagram10.1016/j.intermet.2008.02.017 ↗
13. The Nb−Ni (Niobium-Nickel) system10.1007/BF02881547 ↗
14. Mechanical size effect of eutectic high entropy alloy: Effect of lamellar orientation10.1016/j.jmst.2020.11.067 ↗