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      Some factors affecting the creep behaviour of metallic materials processed by equal-channel angular pressing

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          Abstract

          Very few reports describing the creep behaviour of materials processed by equal-channel angular pressing (ECAP) have shown that there are both similarities and differences between the creep behaviour of coarse-grained metals and alloys and their ultrafine-grained counterparts. This paper examines these differences and evaluates some factors affecting the creep behaviour of pure aluminium, pure copper, and the binary Al-0.2 wt.% Sc alloy processed by ECAP. It was found that the creep behaviour of pressed material depends strongly on the number of ECAP passes and successive passes result in a gradual decrease in the creep resistance which may be attributed to microstructural changes, homogenization of the microstructure and the microtexture, nanoporosity induced by the ECAP procedure and thermal instability of the pressed material during creep exposure.

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          Author and article information

          Journal
          ijmr
          International Journal of Materials Research
          Carl Hanser Verlag
          1862-5282
          2195-8556
          2009
          : 100
          : 6
          : 762-766
          Affiliations
          a Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic
          b Mathematical Institute, Academy of Sciences of the Czech Republic, Prague, Czech Republic
          Author notes
          [* ] Correspondence address, Prof. Ing. Vaclav Sklenička, DrSc. Institute of Physics of Materials AS CR Zizkova 22, CZ-616 62 Brno, Czech Republic Tel.: +420 541 212 290 Fax: +420 541 212 301 E-mail: sklen@ 123456ipm.cz
          Article
          MK110094
          10.3139/146.110094
          © 2009, Carl Hanser Verlag, München
          Page count
          References: 34, Pages: 5
          Product
          Categories
          Basic

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