Influence of Re on the Plastic Hardening Mechanism of Alloyed Copper

Mariusz Krupiński; Beata Krupińska; Robert Chulist

doi:10.3390/ma16165519

Influence of Re on the Plastic Hardening Mechanism of Alloyed Copper

Materials (Basel). 2023 Aug 8;16(16):5519. doi: 10.3390/ma16165519.

Authors

Mariusz Krupiński¹, Beata Krupińska¹, Robert Chulist²

Affiliations

¹ Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, 18a Konarskiego St., 44-100 Gliwice, Poland.
² Institute of Metallurgy and Materials Science of Polish Academy of Sciences, 25 Reymonta St., 30-059 Krakow, Poland.

Abstract

In this paper, we investigated the effect of adding rhenium to Cu-Ni-Si alloys on the mechanical properties and electrical conductivity of these alloys. The scientific objective was to analyze the effect of Re addition on the microstructure of heat- and cold-treated CuNi2Si1 alloys. Transmission electron microscopy (TEM, STEM) and scanning electron microscopy (EDS, WDS) were used to examine the microstructure. Orientation mapping was also performed using a scanning electron microscope (SEM) equipped with a backscattered electron diffraction (EBSD) system. In addition, hardness at low load and conductivity were tested. The obtained results showed that modifying the chemical composition of Re (0.6 wt%) inhibits the recrystallization process in the CuNi2Si1 alloy, which was cold deformed and then subjected to recrystallization annealing.

Keywords: cold plastic treatment; copper alloys; heat treatment; rhenium.

Grants and funding

This publication was supported by the Rector’s grant, Silesian University of Technology, grant number 10/010/RGJ22/1083.