DOI

  • N. D. Stepanov
  • A. V. Kuznetsov
  • G. A. Salishchev
  • G. I. Raab
  • R. Z. Valiev

Microstructure and mechanical properties of copper subjected to 1-10 ECAP passes via route B c were compared with those for further cold rolled specimens. Microstructure was studied by means of TEM and EBSD analysis in three orthogonal sections. Rolling caused transformation of reasonably equiaxed structure after ECAP into lamellar one due to geometrical effect of deformation, but almost no additional grain refinement occurred during rolling. Significantly higher extent of HABs (about 20% irrespectively to passes number) was found after rolling. This was associated with more pronounced dynamic restoration process during rolling. Mechanical properties were estimated by tension testing at room temperature. Yield strength increased by ∼100MPa after rolling due to finer boundary spacing according to Hall-Petch relationship.

Язык оригиналаанглийский
Страницы (с-по)105-115
Число страниц11
ЖурналMaterials Science and Engineering A
Том554
DOI
СостояниеОпубликовано - 30 сен 2012
Опубликовано для внешнего пользованияДа

    Предметные области Scopus

  • Материаловедение (все)
  • Физика конденсатов
  • Сопротивление материалов
  • Общее машиностроение

ID: 35170361