Avoiding cracks and inhomogeneities in billets processed by ECAP.
In: Journal of Materials Science, Jg. 45 (2010-09-01), Heft 17, S. 4561-4570
Online
academicJournal
Zugriff:
Although equal-channel angular pressing (ECAP) is now an established technique for producing bulk ultrafine-grained metallic materials, processing difficulties may arise because of the occurrence of cracking or inhomogeneities. This problem is examined with reference to experimental data for aluminum and magnesium alloys and a Pb–Sb alloy. It is shown that effective procedures are available for avoiding the development of inhomogeneities and the cracking of billets during ECAP: these procedures include introducing a pre-deformation of the as-cast material prior to ECAP, decreasing the strain produced in each ECAP pass by using dies with angles higher than 90°, and controlling the rotation of the billets between sequential passes. [ABSTRACT FROM AUTHOR]
Titel: |
Avoiding cracks and inhomogeneities in billets processed by ECAP.
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Autor/in / Beteiligte Person: | Cetlin, Paulo R. ; Aguilar, Maria Teresa P. ; Figueiredo, Roberto B. ; Langdon, Terence G. |
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Zeitschrift: | Journal of Materials Science, Jg. 45 (2010-09-01), Heft 17, S. 4561-4570 |
Veröffentlichung: | 2010 |
Medientyp: | academicJournal |
ISSN: | 0022-2461 (print) |
DOI: | 10.1007/s10853-010-4384-9 |
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