Characteristics of grain refinement in oxygen-free copper processed by equal-channel angular pressing and dynamic testing

Authors: Alawadhi, M.Y., Sabbaghianrad, S., Wang, Y.C., Huang, Y. and Langdon, T.G.

Journal: Materials Science and Engineering: A

Volume: 775

ISSN: 0921-5093

DOI: 10.1016/j.msea.2020.138985

Abstract:

Oxygen-free copper was processed by equal-channel angular pressing (ECAP) at room temperature for 1, 4 and 8 passes and then the ECAP specimens were further deformed by dynamic testing at 298 K using a strain rate of 10 s−1. Experiments were conducted to investigate the influence of the initial microstructures induced by ECAP on the subsequent grain refinement and mechanical properties after dynamic testing. The results show the strength of copper increased with increasing numbers of ECAP passes and a significant additional grain refinement was produced in the ECAP specimens through the dynamic testing. Thus, the initial grain sizes after ECAP for 1, 4 and 8 passes were ~16, ~4.4 and ~2.9 μm, respectively, and these values were reduced to ~400, ~330 and ~300 nm by dynamic testing, The grains were refined by conventional dislocation processes in the 1-pass specimen but there was evidence for dynamic recrystallization in the specimen processed by 8 passes.

https://eprints.bournemouth.ac.uk/33262/

Source: Scopus

Characteristics of grain refinement in oxygen-free copper processed by equal-channel angular pressing and dynamic testing

Authors: Alawadhi, M.Y., Sabbaghianrad, S., Wang, Y.C., Huang, Y. and Langdon, T.G.

Journal: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Volume: 775

eISSN: 1873-4936

ISSN: 0921-5093

DOI: 10.1016/j.msea.2020.138985

https://eprints.bournemouth.ac.uk/33262/

Source: Web of Science (Lite)

Characteristics of grain refinement in oxygen-free copper processed by equal-channel angular pressing and dynamic testing

Authors: Alawadhi, M.Y., Sabbaghianrad, S., Wang, Y.C., Huang, Y. and Langdon, T.G.

Journal: Materials Science and Engineering A

Volume: 775

Pages: 138985(1)-138985(8)

Publisher: Elsevier

ISSN: 0921-5093

DOI: 10.1016/j.msea.2020.138985

Abstract:

Oxygen-free copper was processed by equal-channel angular pressing (ECAP) at room temperature for 1, 4 and 8 passes and then the ECAP specimens were further deformed by dynamic testing at 298 K using a strain rate of 10 s-1. Experiments were conducted to investigate the influence of the initial microstructures induced by ECAP on the subsequent grain refinement and mechanical properties after dynamic testing. The results show the strength of copper increased with increasing numbers of ECAP passes and a significant additional grain refinement was produced in the ECAP specimens through the dynamic testing. Thus, the initial grain sizes after ECAP for 1, 4 and 8 passes were ~16, ~4.4 and ~2.9 µm, respectively, and these values were reduced to ~400, ~330 and ~300 nm by dynamic testing, The grains were refined by conventional dislocation processes in the 1-pass specimen but there was evidence for dynamic recrystallization in the specimen processed by 8 passes.

https://eprints.bournemouth.ac.uk/33262/

Source: Manual

Preferred by: Yi Huang

Characteristics of grain refinement in oxygen-free copper processed by equal-channel angular pressing and dynamic testing.

Authors: Alawadhi, M.Y., Sabbaghianrad, S., Wang, Y.C., Huang, Y. and Langdon, T.G.

Journal: Materials Science and Engineering: A

Volume: 775

Issue: February

ISSN: 0921-5093

Abstract:

Oxygen-free copper was processed by equal-channel angular pressing (ECAP) at room temperature for 1, 4 and 8 passes and then the ECAP specimens were further deformed by dynamic testing at 298 K using a strain rate of 10 s-1. Experiments were conducted to investigate the influence of the initial microstructures induced by ECAP on the subsequent grain refinement and mechanical properties after dynamic testing. The results show the strength of copper increased with increasing numbers of ECAP passes and a significant additional grain refinement was produced in the ECAP specimens through the dynamic testing. Thus, the initial grain sizes after ECAP for 1, 4 and 8 passes were ~16, ~4.4 and ~2.9 µm, respectively, and these values were reduced to ~400, ~330 and ~300 nm by dynamic testing, The grains were refined by conventional dislocation processes in the 1-pass specimen but there was evidence for dynamic recrystallization in the specimen processed by 8 passes.

https://eprints.bournemouth.ac.uk/33262/

Source: BURO EPrints