The Influence of the Continuous Casting Conditions on the Properties of High-Strength Two-Phase CuMg Alloys

Abstract

Constant tendency toward the improvement of the material properties nowadays creates opportunities for the scientists all over the world to design and manufacture new alloys almost every day. Considering the fact that companies all over the world desire alloys with the highest values of mechanical properties often coexisting with a reasonable electrical conductivity made it necessary to develop new materials based on Cu, such as CuMg alloys. However, before such new material may be mass produced it must undergo a series of tests in order to determine the production technology, its parameters and influence on the chemical composition, microstructural properties, and both mechanical and physical properties of CuMg alloys. The research tests have shown that with the increase of the casting feed the Brinell’s hardness of each material slightly increases (by 5 HB2.5/62.5). There is little to none impact of the casting feed on the electrical conductivity, values of which are between 20.6 and 21.4 MS/m (around 40% IACS-International Annealed Copper Standard) depending on the Mg content. The conducted scanning electron microstopy (SEM) analysis has shown that the magnesium precipitations are evenly distributed among the volume of the alloy, however, a significant difference in the density and shape of the Cu + Cu2Mg aggregates was noticed regarding various casting feed. Static compression test proved that these alloys may be subjected to strain hardening as the hardness of the material after compression increases by approximately 40 HB2.5/62.5.

In Vitro Evaluation of the Potential Anticancer Properties of Cu-Based Shape Memory Alloys

“…The literature is consistent in the conclusion that the biofunctional properties of Cu-based alloys need to be examined comprehensively in the context of the materials production processes [ 5 , 6 , 7 ]. In recent years, several very successful studies have been accomplished with continuous casting (small dimension rods of Au-and Ag–based alloys) [ 8 , 9 , 10 ]. Continuous casting has also been studied in the frame of Ni-Ti alloy, but numerous technical limitations have been encountered, while, on the other hand, Cu-based alloys have the advantage of being less difficult to produce by casting.…”

Pure Alloy Additive or Preliminary Alloy: A Comparative Study on Obtaining High-Strength Copper Magnesium Alloys Designed for Electrical Power Systems

“…However, a few papers have discussed single-phase alloys having a slightly higher Mg content of 1-2 wt.% [37,38], and examined precipitation hardening and strain hardening. There is also one paper on two-phase alloys with Mg content of above 4.5 wt.% [39], in which the influence of the continuous casting parameters on the properties of the material is investigated. The authors of these papers claim that copper alloys with a specific Mg content and proper strengthening may obtain an ultimate tensile strength (UTS) value of between 600 and 800 MPa while maintaining a satisfactory level of electrical properties.…”

Research on Mechanical and Electrical Properties of Cu-Ag Alloys Designed for the Construction of High Magnetic Field Generators

“…These values are so significant that they may lead to the explosive destruction of not only the coil windings but also the electromagnet's body. The ideal material for the manufacture of the electromagnet coil winding should combine the high mechanical properties of steel with the electrical conductivity of a superconductor or copper [4][5][6][7][8]. Only then, due to the proper design of the coil and high intensity electric current flowing through the winding, may a magnetic field of a very high value be created.…”