EFFECTS OF CASTING TEMPERATURE AND MICROALLOYING ELEMENTS ON THE GRAIN STRUCTURE OF DHP COPPER

1 BALART Maria
Co-authors:
1 PATEL Jayesh 1 GAO Feng 1 FAN Zhongyun
Institution:
1 Brunel University, BCAST, Uxbridge, United Kingdom, EU maria.balart@brunel.ac.uk, jayesh.patel@brunel.ac.uk, feng.gao@brunel.ac.uk, zhongyun.fan@brunel.ac.uk
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1376-1381
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
314 views / 130 downloads
Abstract

The effects of a combined addition of 0.039 % P + 0.015 % Ag as well as a nominal addition of 0.1 % of the de-embrittling elements of copper – B, Mg, Ca, Ti and Zr – to give some variations in contents within the DHP-Cu specification limits on grain size structure at a casting temperature of 1130 °C have been determined and compared to those without the microalloying addition of Ag of 0.015 % obtained at a casting temperature of 1150 °C under TP-1 casting conditions. These results showed that on decreasing the casting temperature from 1150 °C to 1130 °C, the degree of CET increased for DHP-Cu reference with and without microalloying with Ag; the microalloying addition of Ag of 0.015 % to DHP-Cu was essential for grain size control; and that, in comparison to the corresponding DHP-Cu reference cast at 1150 °C and 1130 °C, no further grain refining action was observed due to B, Mg, Ca, Ti and Zr microalloying additions for the conditions studied.

Keywords: DHP copper, oxygen free copper, columnar to equiaxed transition, grain refinement, grain growth restriction, de-embrittlement

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Scroll to Top