Microstructural effects and large microhardness in cobalt processed by high pressure torsion consolidation of ball milled powders

J Sort, A Zhilyaev, M Zielinska, J Nogués, S Surinach… - Acta materialia, 2003 - Elsevier
The effects of plastic deformation on Co microstructure after a high pressure torsion (HPT)
process on unmilled and ball milled powders have been studied and compared to those …

Mechanical twins, their development and growth

FD Fischer, T Schaden, F Appel, H Clemens - European Journal of …, 2003 - Elsevier
Mechanical or deformation twinning is first explained as a shearing mechanism and
compared to crystallographic slip. Then twinning in several metals is discussed. A twin can …

The role of nitrogen on the deformation response of hadfield steel single crystals

D Canadinc, H Sehitoglu, I Karaman… - … Materials Transactions A, 2003 - Springer
We studied the role of nitrogen content on the stress-strain response of Hadfield steel (HS)
single crystals under compressive loading. Two different nitrogen concentrations were …

A thermodynamical model for the nucleation of mechanical twins in TiAl

FD Fischer, F Appel, H Clemens - Acta materialia, 2003 - Elsevier
Mechanical twinning has long been recognized as an important deformation mechanism in
many intermetallics including γ (TiAl) based alloys. The generation of a twin can be triggered …

Constitutive equations for twinning and slip in low-stacking-fault-energy metals: a crystal plasticity-type model for moderate strains

M Cherkaoui - Philosophical Magazine, 2003 - Taylor & Francis
In the present paper, we propose an alternative description of twin-slip interactions by a
crystal plasticity framework. Our analysis is limited to moderate strains occurring in many …