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기계적 합금화 및 스파크 플라즈마 소결에 의해 제조된 Al-Fe-X계 합금의 열적 안정성: II. Al-Fe-Cr and Al-Fe-MoThermal Stability of Al-Fe-X Alloy System Prepared by Mechanical Alloying and Spark Plasma Sintering: II. Al-Fe-Cr and Al-Fe-Mo
- Other Titles
- Thermal Stability of Al-Fe-X Alloy System Prepared by Mechanical Alloying and Spark Plasma Sintering: II. Al-Fe-Cr and Al-Fe-Mo
- Issue Date
- 2005
- Publisher
- 한국분말야금학회
- Keywords
- Al-Fe; Al-Fe-Cr; Al-Fe-Mo; Mechanical alloying; Spark plasma sintering; Grain growth; Thermal stability; Al-Fe; Al-Fe-Cr; Al-Fe-Mo; Mechanical alloying; Spark plasma sintering; Grain growth; Thermal stability
- Citation
- 한국분말야금학회지, v.12, no.1, pp.43 - 50
- Journal Title
- 한국분말야금학회지
- Volume
- 12
- Number
- 1
- Start Page
- 43
- End Page
- 50
- ISSN
- 1225-7591
- Abstract
- Mechanical alloying using high-energy ball mill and subsequent spark plasma sintering (SPS) process was applied to Al-Fe-Cr and Al-Fe-Mo powder mixture to investigate effects of Cr and Mo addition on thermal stability of Al-Fe, and thereby to enhance its thermal stability up to 500℃. Various analytical techniques including micro-Vickers hardness test, SEM, TEM, X-ray diffractometry and corrosion test were carried out. It was found that addition of Cr and Mo to Al-Fe system played a role of grain growth inhibitor of matrix Al and some precipitates such as Al3Fe during SPS and subsequent heat treatment. The inhibition of grain growth resulted in increased Vickers hardness and thermal stability up to 500℃ comparing to those of Al-Fe alloy system.
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Related Researcher
- CHO, KYEONG SIK
- College of Engineering (Department of Materials Science and Engineering)