Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 722, Issue -, Pages 93-98Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.02.106
Keywords
Heterogeneous structure; Electroplastic rolling; Ductility; Strain hardening; Back stress
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Funding
- National Basic Research Program of China [2010CB731606]
- National Natural Science Foundation of China [51471144, 51471145, 51771163, 51421091]
- Science and Technology Research Project of Hebei Province [ZD2016076]
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Heterogeneous structure has been widely used to enhance the poor ductility of high-strength nanostructured materials. However, it is still a challenge to form heterogeneous structures in hard-deformed materials. Here, by using electroplastic rolling and subsequent low-temperature annealing, a heterogeneous structure was formed in the hard-deformed imp Zr and exhibited a good combination of high strength and good ductility. Its formation can be attributed to the effective microstructure refinement and high deformation energy storage during the electroplastic deformation process. The present study is important for the design and fabrication of heterogeneous structured metals and alloys.
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