TY - JOUR

T1 - Unusual super-ductility at room temperature in an ultrafine-grained aluminum alloy

AU - Valiev, Ruslan Z.

AU - Murashkin, Maxim Yu

AU - Kilmametov, Askar

AU - Straumal, Boris

AU - Chinh, Nguyen Q.

AU - Langdon, Terence G.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - Processing by severe plastic deformation (SPD) typically increases the strength of metals and alloys drastically by decreasing their grain size into the submicrometer or nanometer range but the ductility of such materials remains typically low. This report describes the first demonstration that it is possible to increase the room temperature ductility of aluminum-based alloys processed by SPD and to attain elongations to failure of >150% while retaining the enhanced strength. This unique combination of properties is due to the occurrence of grain boundary sliding at room temperature. The sliding was obviously achieved by introducing a grain boundary wetting of the aluminum/aluminum grain boundaries.

AB - Processing by severe plastic deformation (SPD) typically increases the strength of metals and alloys drastically by decreasing their grain size into the submicrometer or nanometer range but the ductility of such materials remains typically low. This report describes the first demonstration that it is possible to increase the room temperature ductility of aluminum-based alloys processed by SPD and to attain elongations to failure of >150% while retaining the enhanced strength. This unique combination of properties is due to the occurrence of grain boundary sliding at room temperature. The sliding was obviously achieved by introducing a grain boundary wetting of the aluminum/aluminum grain boundaries.

UR - http://www.scopus.com/inward/record.url?scp=77955392226&partnerID=8YFLogxK

U2 - 10.1007/s10853-010-4588-z

DO - 10.1007/s10853-010-4588-z

M3 - Article

AN - SCOPUS:77955392226

VL - 45

SP - 4718

EP - 4724

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 17

ER -