Details

Autor(en) / Beteiligte

• Goto, M.
• Ando, Y.
• Han, S.Z.
• Kim, S.S.
• Kawagoishi, N.
• Euh, K.

Titel

The effect of microstructural inhomogeneity on the growth paths of surface-cracks in copper processed by equal channel angular pressing

Ist Teil von

• Engineering fracture mechanics, 2010-07, Vol.77 (11), p.1914-1925

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The growth behavior of cracks is monitored on specimens of ultrafine grained copper produced by equal channel angular pressing. Temporary retardation of crack growth under low stress amplitudes occurs when the crack length reaches about 0.1 mm, but there is no similar retardation at high stress amplitudes. Dependent on stress amplitude, different crack growth path morphologies develop. Analysis of the fracture surfaces is conducted by scanning electron microscopy, showing planer, granular and striated surfaces. The physical background of growth path and fracture surface formation is discussed by considering crack growth mechanism and microstructural inhomogeneity.