Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
권호 표지

Microstuctures and Themal Stability of Rapidly Solidified Al-Fe-V-Si-(Mn) Alloys

급랭응고한 Al-Fe-V-Si계 합금의 미세조직과 열안정성에 관한 연구

  • Kim, Seon-Hwa (Material Processing Lab. Korea Institute of Machinery and Metals) ;
  • Park, Won-Wook (Material Processing Lab. Korea Institute of Machinery and Metals)
  • 김선화 (한국기계연구소 제조야금실) ;
  • 박원욱 (한국기계연구소 제조야금실)
  • Published : 1991.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

The main purpose of this paper was to investigate the change of rapidly solidified microstructures and dispersoid behavior according to heat-treatment in the Al-Fe-V-Si-(Mn) alloys. It was found that (111) preferred orientation identified by X-ray diffraction and fine subgrain/large grain were observed in the rapidly solidified Al-Fe-V-Si-(Mn) alloys. Cell boundary of the zone A was composed of the microcrystalline, whereas that of the zone B was amorphous. Decomposition of the Al-Fe-V-Si-(Mn) alloys occurred at about $300^{\circ}C$. These alloys exhibited excellent thermal stability at the elevated temperature. Microstructure of the zone B was more stable than that of the zone A. The spherical dispersoid and 5-fold symmetry phase was also more thermally stable than the amorphous structure of cell boundary.

Keywords