Effect of trace La on microstructure and properties of Cu–Cr–In alloys
Open Access
- 1 June 2020
- journal article
- research article
- Published by IOP Publishing in Materials Research Express
- Vol. 7 (6), 066506
- https://doi.org/10.1088/2053-1591/ab9778
Abstract
The strength and conductivity of Cu–Cr–In alloys with trace La and different processing states were compared. Then, the influence of La on the structure and properties of the Cu–Cr–In alloy and the associated mechanisms were analyzed. The mechanical properties and microstructural evolution of the alloy were investigated via scanning electron microscopy, transmission electron microscopy, and tensile strength measurements. The results showed that the addition of 0.07wt% La to the Cu–Cr–In alloy had the effect of purifying the alloy melt and removing impurities, which improved the electrical conductivity of the alloy. However, the formation of rare earth intermetallic compounds reduced the tensile strength of the Cu–Cr–In–La alloy. After thermomechanical treatment, the Cu–Cr–In–La alloy reached a peak strength of 457 MPa and a conductivity of 85% IACS.Keywords
Funding Information
- The National Key R&D Program of China (2016YFB0301400)
This publication has 20 references indexed in Scilit:
- Contribution of Zr to strength and grain refinement in Cu Cr Zr alloyMaterials Science and Engineering: A, 2019
- Mechanical properties and microstructural evolution of a Cu–Cr–Ag alloy during thermomechanical treatmentMaterials Science and Technology, 2018
- Retaining meta-stable fcc-Cr phase by restraining nucleation of equilibrium bcc-Cr phase in CuCrZrTi alloys during ageingJournal of Alloys and Compounds, 2018
- Microstructure and Properties of Fine Grained Cu-Cr-Zr Alloys after Termo-Mechanical TreatmentsREVIEWS ON ADVANCED MATERIALS SCIENCE, 2018
- Upward Continuous Casting in the Manufacture of Cu-Cr-Ag Alloys: Potential for Enhancing Strength Whilst Maintaining DuctilityMetallurgical and Materials Transactions, 2017
- The microstructure evolution and properties of a Cu–Cr–Ag alloy during thermal-mechanical treatmentJournal of Materials Research, 2017
- Effects of Zr and (Ni, Si) additions on properties and microstructure of Cu–Cr alloyJournal of Alloys and Compounds, 2014
- Influence of dc electric current on the hardness of thermally aged Cu–Cr–Zr alloyJournal of Alloys and Compounds, 2009
- Nanostructural Evolution of Cr-rich Precipitates in a Cu-Cr-Zr Alloy During Heat Treatment Studied by 3 Dimensional Atom ProbeMATERIALS TRANSACTIONS, 2008
- Effect of processing and heat treatment on behavior of Cu-Cr-Zr alloys to railway contact wireMetallurgical and Materials Transactions, 2006