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Micro/nano ductile-phases reinforced Fe-based bulk metallic

已有 2771 次阅读 2017-9-10 22:45 |个人分类:非晶前沿|系统分类:论文交流

Micro/nano ductile-phases reinforced Fe-based bulk metallic glass matrix composite with large plasticity

  • Faculty of Materials and Energy, Southwest University, Chongqing 400715, China

Received 16 July 2017, Revised 9 September 2017, Accepted 9 September 2017, Available online 10 September 2017

https://doi.org/10.1016/j.msea.2017.09.036


Abstract

Fe-based bulk metallic glasses (BMGs) often show an extremely poor plastic deformation ability at room temperature, which seriously restricted their wide application. In this work, a series of in-situ (Fe77Mo5P9C7.5B1.5)100-xCux (x=0, 0.1, 0.3, 0.5, 0.7, 1 at.%) BMG matrix composites were successfully developed by low purity industrial raw materials using copper mold casting. An (Fe77Mo5P9C7.5B1.5)99.9Cu0.1 BMG matrix composite reinforced by the dual heterogeneous structure with micro/nano α-Fe exhibits the highest ever reported compressive plasticity of ~6.6% during the testing rod with a diameter of 1.5 mm. The origin of a large plasticity of this Fe-based BMG composite has been discussed according to the initiation of the shear bands and the instability of the shear banding.

Keywords
  • Fe-based bulk metallic glass; composite; plasticity

http://www.sciencedirect.com/science/article/pii/S0921509317311930




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