Journal
MATERIALS LETTERS
Volume 67, Issue 1, Pages 52-55Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2011.08.086
Keywords
Upsetting with ultrasonic vibration (UUV); Grain refinement; Severe plastic deformation (SPD); Nanostructured material
Funding
- WUT [2010-JL-17]
- Natural Science Foundation of China for Distinguished Young Scholars [50725517]
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The propagation of the ultrasonic wave in the solids can greatly affect the microstructure of the material. In this paper, upsetting with ultrasonic vibration as a novel method to produce the ultrafine grained material was presented to refine the pure copper grains. For the ultrasonic vibration upsetting, during the upsetting process, the ultrasonic wave propagates in the specimen at the same time. Under the coupling action of the ultrasonic and plastic deformation, the pure copper grains with the initial grain size of similar to 50 mu m(?) were refined to about 100-300 nm after one time forming process. By comparing the ultrasonic vibration upsetting with the conventional upsetting process, the role that the ultrasonic wave played during the upsetting process was revealed. (C) 2011 Elsevier B.V. All rights reserved.
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