Details

Autor(en) / Beteiligte

• Dobatkin, S.V.
• Szpunar, J.A.
• Zhilyaev, A.P.
• Cho, J.-Y.
• Kuznetsov, A.A.

Titel

Effect of the route and strain of equal-channel angular pressing on structure and properties of oxygen-free copper

Ist Teil von

• Materials science & engineering. A, Structural materials : properties, microstructure and processing, 2007-07, Vol.462 (1), p.132-138

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Structure and properties of oxygen-free copper (99.98%) in dependence on strain and routes during equal-channel angular (ECA) pressing at room temperature up to strains ɛ ∼ 29 are studied. At ɛ ∼ 29, according to orientation imaging microscopy (OIM) analysis, the minimum size of structure elements, 230 nm, corresponds to route B c, and the maximum fraction of high-angle boundaries, 77%, corresponds to route A. The sizes of structure elements revealed by analysis were larger than those determined by transmission electron microscopy (TEM). The strength characteristics of oxygen-free copper after equal-channel angular pressing increase by a factor of 1.5–1.7 and remain virtually constant in the deformation range ɛ ∼ 6–29 for all routes. The maximum UTS and YS values correspond to route B c. The ductility decreases after the first pass and increases after ten passes, especially for route B c.