Tao Qian and Michael Marx acknowledge the support of this work by the Deutsche Forschungsgemeinschaft (DFG), Grant No. MA 3322/3-1. I. Karaman acknowledges the support from the National Science Foundation, Grant No. DMR-08-44082, which supports the International Materials Institute for Multifunctional Materials for Energy Conversion (IIMEC) at Texas University. Finally, the authors thank Kerstin Schueler for producing the PED nickel plates.
Mechanical Properties of Nanocrystalline and Ultrafine-Grained Nickel with Bimodal Microstructure†
Article first published online: 20 MAR 2014
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 16, Issue 11, pages 1323–1339, November 2014
How to Cite
Qian, T., Karaman, I. and Marx, M. (2014), Mechanical Properties of Nanocrystalline and Ultrafine-Grained Nickel with Bimodal Microstructure. Adv. Eng. Mater., 16: 1323–1339. doi: 10.1002/adem.201300570
- Issue published online: 5 NOV 2014
- Article first published online: 20 MAR 2014
- Manuscript Accepted: 14 FEB 2014
- Manuscript Received: 20 DEC 2013
The aim of this work was to use bimodal microstructures to improve ductility and fatigue resistance of nanocrystalline (NC) and ultrafine-grained (UFG) materials while keeping the materials’ high strength. Nickel plates produced by pulsed electrodeposition were used as NC base material while as UFG base material high-purity nickel was processed by equal channel angular pressing. After different heat treatments, bimodal microstructures could be realized in the size ranges of NC/UFG and UFG/coarse grained (CG). While the UFG/CG nickel revealed an improved ductility but little influence on the fatigue resistance, the NC/UFG nickel shows an extraordinary fatigue resistance.