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18.222.184.207
18.222.184.207
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SCIE SCOPUS
급속응고된 Al - Fe - ( Mo , Si ) 계 합금분말 압출재의 미세조직과 기계적 특성
Microstructures and Mechanical Properties of Rapidly Solidified Al - Fe - ( Mo , Si ) Alloy Powder - Extrudates
백남익(Nam Ik Baik), 허성강(Sung Kang Hur), 나형용(Hyung Yong Ra)
UCI I410-ECN-0102-2008-580-001847862

A study has been made on the microstructure and mechanical properties of rapidly solidified Al-Fe-(Mo,Si) alloys. Examination of the extruded bar using TEM reveals the microstructure to be inhomogeneous along with the bimodal distribution of precipitates. It is believed that. such inhomogeneous microstructure is caused by the structural difference between zone A and zone B in the starting powder. The tensile testing shows an increase in tensile strength but a decrease in elogation as the content of iron in the alloy increases. It has been found that decrease in elongation can be prevented by the addition of Si to Al-8Fe-2Mo alloy. For the elevated temperature mechanical properties, all extruded specimens with 8% iron show tensile strength of 180-190㎫ at 573K, but their elongation values were decresed with incresing the test temperatures, reaching a minimum at around 423 K.

[자료제공 : 네이버학술정보]
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