kpmi
Articles
- Page Path
- HOME > J Korean Powder Metall Inst > Volume 15(2); 2008 > Article
- 가스분무 공정에 의한 고강도 과공정 AI-Si 합금 분말의 제조 및 특성연구 II. 압출재 제조 및 기계적 특성
- 김용진, 김진천
- Fabrication and Properties of High Strength Hypereutectic AI-Si Powders by a Gas Atomization Process II. Extrusion and Mechanical Properties
- Yong-Jin Kim, Jin-Chun Kim
-
Journal of Korean Powder Metallurgy Institute 2008;15(2):142-147
DOI: https://doi.org/10.4150/KPMI.2008.15.2.142
1한국기계연구원 부설 재료기술연구소 분말재료연구센터
2울산대학교 첨단소재공학부
1Department of Powder Materials Research, Korea Institute of Materials Science
2School of Materials Science and Engineering, University of Ulsan
2울산대학교 첨단소재공학부
1Department of Powder Materials Research, Korea Institute of Materials Science
2School of Materials Science and Engineering, University of Ulsan
- 16 Views
- 0 Download
- 0 Crossref
- 0 Scopus
Abstract
The hypereutectic Al-20 wt%Si powders including some amount of Cu, Fe, Mg, Mn were prepared by a gas atomization process. In order to get highly densified Al-Si bulk specimens, the as-atomized and sieved powders were extruded at 500°C, Microstructure and tensile properties of the extruded Al-Si alloys were investigated in this study. Relative density of the extruded samples was over 98%. Ultimate tensile strength (UTS) in stress-strain curves of the extruded powders increased after T6 heat treatments. Elongation of the samples was also increased from 1.4% to 3.2%. The fracture surfaces of the tested pieces showed a fine microstructure and the average grain size was about 1µm.
Cited- Related articles
-
