The Ductility of Fe3Al Intermetallic Compounds (I)
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摘要: 通過加鉻合金化及合理的熱加工工藝,制得了高室溫韌性Fe3Al金屬間化合物。實驗結果表明:合金元素鉻的添加,改變了鐵鋁合金的斷裂模式,即由純解理斷裂模式變為解理、沿晶混合斷裂模式;鉻的加入改善了室溫韌性,提高了解理強度。Abstract: A Fe3Al intermetallic compound with high room temperature ductility has been obtained by means of combination of proper alloying addition and hot deformation. The relationship between properties and fractography was investigated. It was found that the fracture model of the alloys became a mired intergranuar-cleavage model while the Fe3Al containing no Cr showed pure cleavage one. The improvement of room ductility can be attributed to the increase of cleavage strength.
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Key words:
- Intel-metallic compound /
- Aluminides /
- ordering treatment /
- room temperature brittleness
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