Microstructure and Mechanical Properties of FeAl Intermetallics Prepared by Mechanical Alloying and Hot-Pressing |
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Authors: | SONG Haixia WU Yunxin TANG Chuan'an YUAN Shuai GONG Qianming LIANG Ji |
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Affiliation: | 1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;2. Department of Mechanical Engineering, Army Aviation Institute of PLA, Beijing 101123, China |
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Abstract: | FeAl intermetallics were prepared by mechanical alloying and vacuum hot-pressing. The Fe-48 at.% Al powder was ball-milled for 3-12 h, producing a solid solution structure of Fe (Al) with trace Al (Fe). Subsequent vacuum annealing or hot-pressing introduced phase transformations into the FeAl (B2) intermetallics and Al2O3 inclusions. The hot-pressed FeAl intermetallics possess a high flexural strength of 831 MPa and a fairly good strain at break of 3.2%. The results show that the addition of 0.5 at.% B redu... |
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Keywords: | FeAl intermetallics mechanical alloying powder hot-pressing flexural strength |
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