기계적 합금화 및 스파크 플라즈마 소결에 의해 제조된 Al-Fe-X계 합금의 열적 안정성: I. Al-FeThermal Stability of Al-Fe-X Alloy System Prepared by Mechanical Alloying and Spark Plasma Sintering: I. Al-Fe
- Other Titles
- Thermal Stability of Al-Fe-X Alloy System Prepared by Mechanical Alloying and Spark Plasma Sintering: I. Al-Fe
- Authors
- 이현권; 이상우; 조경식
- Issue Date
- 2005
- Publisher
- 한국분말야금학회
- Keywords
- Al-Fe; Mechanical alloying; Spark plasma sintering; Thermal stability; Al-Fe; Mechanical alloying; Spark plasma sintering; Thermal stability
- Citation
- 한국분말야금학회지, v.12, no.1, pp.70 - 78
- Journal Title
- 한국분말야금학회지
- Volume
- 12
- Number
- 1
- Start Page
- 70
- End Page
- 78
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/3398
- ISSN
- 1225-7591
- Abstract
- Mechanical alloying using high-energy ball mill and subsequent spark plasma sintering (SPS) process was applied to understand mechanical alloying processing of Al-Fe alloy system. The thermal stability of mechanically alloyed Al-Fe alloy was intended to be enhanced by SPS process. Various analytical techniques including particle size analysis, density measurement, micro-Vickers hardness test, SEM, TEM, and X-ray diffractometry were adopted to find optimum processing conditions for mechanical alloying and subsequent SPS and to estimate thermal stability of the prepared alloy. It was found from the treatment of mechanically alloyed Al-8wt.%Fe powder mixture that needle-shaped Al3Fe precipitates was formed in the Al-Fe matrix, and the alloy compact showed enhanced densification and reached its full density with little loss of its fine microstructure. After heat treatment at 500℃, it was also shown that the thermal stability of Al-8wt.%Fe alloy fabricated in the present study was enhanced, which was due to its fine microstructure developed by fast densification of SPS.
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