Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

The effect of Sc on the properties of Al-Si alloy Powders fabricated by Gas Atomization and Their extruded bars

Sc첨가가 가스분무법 으로 제조된 Al-Si합금 분말 및 압출재의 특성에 미치는 효과

  • Lee, Woo-Ram (Division of Advanced Materials Engineering, Kongju National University) ;
  • Kim, Ji-Hoon (Division of Advanced Materials Engineering, Kongju National University) ;
  • Goo, Ja-Myoung (Division of Advanced Materials Engineering, Kongju National University) ;
  • Kim, Jun-Ro (Division of Advanced Materials Engineering, Kongju National University) ;
  • Lee, Tae-Haeng (Division of Advanced Materials Engineering, Kongju National University) ;
  • Hong, Soon-Jik (Division of Advanced Materials Engineering, Kongju National University)
  • Published : 2009.10.08
Download PDF
⟨ Previous Next ⟩

Abstract

In this research, the effect of Sc on the micro structure and mechanical properties of Al-20Si alloy powders and their extruded bar was investigated. The Al-20wt%Si and Al-20wt%Si-0.6wr%Sc powders were produced by gas atomization. The micro structures of the alloy powders and extrude was examined by optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The alloy powders were subsequently canned, degassed and extruded in order to produce the alloy bulk. It was found that the micro structure of the Al-20Si alloy powder was refined and the mechanical properties was significantly improved by the addition of 0.6Sc.

Keywords