Microstructure and tensile behavior of Al and Al-matrix carbon nanotube composites processed by high pressure torsion of the powders

Soo Hyun Joo, Seung Chae Yoon, Chong Soo Lee, Dong Hoon Nam, Soon Hyung Hong, Hyong Seop Kim

研究成果: Article査読

39 被引用数 (Scopus)

抄録

Carbon nanotubes (CNTs) are expected to be ideal reinforcements of composite materials used in aircraft and sports industries due to their high modulus and low density. In the present paper, severe plastic deformation by high pressure torsion (HPT) of powders at elevated temperature (473 K) was employed to achieve both powder consolidation and grain refinement of aluminum-matrix nanocomposites reinforced by 5 vol% CNTs. Before the HPT, the powders were ball milled using planetary ball mill in order to achieve molecular level mixing. Aluminum was treated by the same process for a reference. The HPT processed disk were composed of considerably equilibrium grain boundaries with high misorientation angles. The CNT-reinforced ultrafine grained microstructural features resulted in high strength and good ductility.

本文言語English
ページ(範囲)4652-4658
ページ数7
ジャーナルJournal of Materials Science
45
17
DOI
出版ステータスPublished - 2010 9
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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