Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 249, Issue -, Pages 221-228Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2017.06.002
Keywords
Micro-arrayed forming; Micro deep drawability; Nanomaterials; Metal-matrix composites (MMCs); Size effects
Funding
- National Science and Technology Major Project of China [2014ZX04001-141]
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For the first time, three different male dies (a rigid male die, an aluminum male die, and a nanoceramic powder male die) are used for a micro-arrayed deep drawing process using graphene oxide (GO) reinforced Ni-Co nanocomposite. Micro-parts with different shapes can be formed using the different male dies, and models to predict crack positions are established. The nanocomposite size effect leads to an increased depth-diameter ratio for decreasing female die diameters, and the conservation of volume leads to higher depth-diameter ratios and thinning rates. The reinforcing GO phase not only is able to improve the micro formability of the composite, but also inhibits grain growth at high temperature.
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