Microdiffraction to detemine grain sizes at selected postitions in disks precessed by high-pressure torsion
Ungár, Tamás, Belogh, Levente, Zhu, Yuntian T., Horita, Zenji, Xu, Cheng and Langdon, Terence G (2007) Microdiffraction to detemine grain sizes at selected postitions in disks precessed by high-pressure torsion. Materials Science and Engineering: A, 444, (1-2), 153-156. (doi:10.1016/j.msea.2006.08.059).
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Disks of pure Cu, Cu–10% Zn and Cu–30% Zn were processed by high-pressure torsion (HPT) and then examined at selected positions using microhardness testing and X-ray microdiffraction line broadening. The results show excellent agreement between the microhardness measurements and X-ray microdiffraction. The grain sizes and the microhardness values are essentially constant across the diameters of the disks of pure Cu and the Cu–30% Zn alloy but for the Cu–10% Zn alloy the measured grain size is largest and the hardness is lowest in the center of the disk. The results demonstrate the potential for achieving a reasonably homogeneous microstructure in samples processed by HPT.
|Keywords:||copper alloys, high-pressure torsion, microhardness, severe plastic deformation, x-ray line profile analysis|
|Subjects:||T Technology > TN Mining engineering. Metallurgy|
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
|Date Deposited:||26 Jan 2007|
|Last Modified:||27 Mar 2014 18:28|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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