Structure and Thermal Stability of Cu after Severe Plastic Deformation

• DOI: 10.4028/www.scientific.net/ddf.297-301.1312
• Publication Date: 2010-04-13T19:09:45Z
• Authors: Vladimir V. Popov; A.V. Stolbovkiy; E.N. Popova; V.P. Pilyugin
• Keywords: 0103 physical sciences; 02 engineering and technology; 0210 nano-technology; 01 natural sciences

Evolution of structure of high-purity and commercially pure copper at severe plastic deformation (SPD) by high pressure torsion (HPT) at room temperature and in liquid nitrogen has been studied by transmission electron microscopy (TEM) and measurements of microhardness. Thermal stability of structure obtained by HPT has been investigated. Factors preventing from obtaining nanocrystalline structure in Cu are analyzed and possible ways of their overcoming are discussed.