TY - JOUR

T1 - Rapid hardening induced by electric pulse annealing in nanostructured pure aluminum

A1 - Zeng,Wei

A1 - Shen,Yao

A1 - Zhang,Ning

A1 - Huang,Xiaoxu

A1 - Wang,Jeff

A1 - Shan,Aidang

AU - Zeng,Wei

AU - Shen,Yao

AU - Zhang,Ning

AU - Huang,Xiaoxu

AU - Wang,Jeff

AU - Shan,Aidang

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - Nanostructured pure aluminum was fabricated by heavy cold-rolling and then subjected to recovery annealing either by applying electric pulse annealing or by traditional air furnace annealing. Both annealing treatments resulted in an increase in yield strength due to the occurrence of a “dislocation source-limited hardening” mechanism. However, the hardening kinetics was substantially faster for the electric pulse annealed material. Detailed microstructural characterization suggested that the rapid hardening during electric pulse annealing is related to an enhanced rate of recovery of dislocation structures.

AB - Nanostructured pure aluminum was fabricated by heavy cold-rolling and then subjected to recovery annealing either by applying electric pulse annealing or by traditional air furnace annealing. Both annealing treatments resulted in an increase in yield strength due to the occurrence of a “dislocation source-limited hardening” mechanism. However, the hardening kinetics was substantially faster for the electric pulse annealed material. Detailed microstructural characterization suggested that the rapid hardening during electric pulse annealing is related to an enhanced rate of recovery of dislocation structures.

KW - Materials characterization and modeling

KW - Materialekarakterisering og modellering

U2 - 10.1016/j.scriptamat.2011.10.023

DO - 10.1016/j.scriptamat.2011.10.023

JO - Scripta Materialia

JF - Scripta Materialia

SN - 1359-6462

IS - 3-4

VL - 66

SP - 147

EP - 150

ER -