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HomeSolid State PhenomenaSolid State Phenomena Vol. 299Effect of Hf Doping of Commercially Pure Copper on...

Effect of Hf Doping of Commercially Pure Copper on Evolution of its Microstructure under High Pressure Torsion

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Abstract:

Evolution of the structure of commercially pure copper and Cu-0.8%Hf alloy under high pressure torsion (HPT) is compared. It is demonstrated that doping with Hf affects appreciably a tendency to relaxation processes inherent to copper. Introduction of additional impurities enables to achieve finer fragmentation of structure and increase of microhardness with the strain growth, compared to the commercially pure copper, in which these parameters are weakened by the intensively developing relaxation processes. However, these processes can serve a limiting factor for fragmentation and microhardness increase in the Cu-0.8Hf alloy as well, under the HPT by 5 revolutions of anvils.

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Materials Engineering and Technologies for Production and Processing V

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Periodical:

Solid State Phenomena (Volume 299)

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424-429

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https://doi.org/10.4028/www.scientific.net/SSP.299.424

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Online since:

January 2020

Authors:

Alexey V. Stolbovsky*, Vladimir Popov, Ruslan Falahutdinov

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Copper, Copper Alloys, High Pressure Torsion, Micro-Hardness, Ultrafine-Grained Structure

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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