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분말시스압연법에 의해 제조된 알루미늄 분말성형체의 조직 및 기계적 성질

Microstructure and Mechanical Property of Aluminum Powder Compact by Powder-in Sheath Rolling Method

  • 이성희 (한양대학교 금속재료공학과)
  • 발행 : 2002.06.01

초록

A nitrogen gas atomized aluminum powder was consolidated by powder-in sheath rolling method. A pure aluminum tube with outer diameter of 12 mm and wall thickness of 1mm was used as a sheath. The aluminum tube filled with the aluminum powder, first, was cold-rolled to the thickness of 6mm for performing, and then consolidated by the cold rolling and/or subsequent hot rolling at 360, 460 and $560^{\circ}C$. The aluminum powder compact fabricated by the sheath rolling showed high relative density more than 0.96 at any rolling conditions. The 0.2% proof stress increased with increasing hot rolling reduction and hot rolling temperature. Tensile strength was hardly affected by change in the hot rolling reduction, whereas it decreased with increasing hot rolling temperature. The powder compact showed the large elongation when cold rolling or hot rolling reduction was large. It was found that the sheath rolling was an effective method for consolidation of aluminum powder.

키워드

참고문헌

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피인용 문헌

  1. Microstructure and Mechanical Properties of CNT/Al Composite Fabricated by a Powder-in-Sheath Rolling Method utilizing Copper Tube as a Sheath vol.21, pp.5, 2014, https://doi.org/10.4150/KPMI.2014.21.5.343