Microstructure, Micro-Hardness, and Corrosion Resistance of Commercial Purity Al Processed by Hollow-Cone High-Pressure Torsion

Jing Guo, Xiaorong Zhang, Dan Kong, Soo Hyun Joo, Wooyeol Kim, Hyoung Seop Kim, Xiaohui Zhang

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Hollow-cone high-purity commercial Al prepared using copper mold suction casting method is annealed at 600 °C, then processed by high-pressure torsion of 0.25 and 0.5 revolutions to produce ultrafine-grained materials. Microstructure, micro-hardness, and corrosion resistance in 3.5% NaCl solution are investigated in this paper. The grain size of the deformed Al after 0.25 and 0.5 revolutions are 1.16 and 0.73 µm, respectively, which are smaller than that of the annealed specimen of 33.46 µm determined using electron backscatter diffraction. The micro-hardness of the deformed Al is two-times larger than that of the annealed specimen. In addition, corrosion resistance of the deformed Al is higher than that of the annealed specimen, which is verified by polarization tests and scanning electron microscopy.

本文言語English
論文番号1800905
ジャーナルAdvanced Engineering Materials
21
3
DOI
出版ステータスPublished - 2019 3月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

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