1 Department of Wind Energy, Technical University of Denmark2 Materials science and characterization, Department of Wind Energy, Technical University of Denmark3 Tsinghua University4 Tsinghua University
Pearlitic steel wires have a nanoscale structure and a strength which can reach 5 GPa. In order to investigate strengthening mechanisms, structural parameters including interlamellar spacing, dislocation density and cementite decomposition, have been analyzed by transmission electron microscopy and high resolution electron microscopy in wires cold drawn up to a strain of 3.7. Three strengthening mechanisms, namely boundary strengthening, dislocation strengthening and solid solution hardening have been analyzed and good agreement has been found between the measured flow stress and the value estimated based on an assumption of linear additivity of the three contributions.
Abstract Book, 2012
Main Research Area:
Ultrafine Grained Materials 7: Young Scientist, 2012