EFFECTS OF Cr AND Nb ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Fe_3Al ALLOYS

EFFECTS OF Cr AND Nb ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Fe_3Al ALLOYS

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摘要 The effects of Cr and Nb on tensile properties at room and elevated temperatures and also on the microstructure have been investigated.An improvement in ductiliy plasicity and the cleavage strength of Fe_3AI may result from adding Cr;the improvement is more pronounced at over 400℃.The formation of Fe_2Nb containing A1 precipitates in the Fe_3AI+Nb alloy provide significant strengthening effect.Additions of Cr and Nb in Fe_3AI can cause a signifi- cant improvement in the yield strength at 550℃. The effects of Cr and Nb on tensile properties at room and elevated temperatures and also on the microstructure have been investigated.An improvement in ductiliy plasicity and the cleavage strength of Fe_3AI may result from adding Cr;the improvement is more pronounced at over 400℃.The formation of Fe_2Nb containing A1 precipitates in the Fe_3AI+Nb alloy provide significant strengthening effect.Additions of Cr and Nb in Fe_3AI can cause a signifi- cant improvement in the yield strength at 550℃.

作者 SUN Chao GUO Jianting TAN Minghui LI Hui WANG Shuhe Institute of Metal Research,Academia Sinica,Shenyang,China professor,Institute of Metal Research,Academia Sinica,Shenyang 110015,China

出处《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1993年第3期157-160,共4页 金属学报（英文版）

关键词 intermetallic compound Fe_3Al alloy mechanical properties CR NB intermetallic compound Fe_3Al alloy mechanical properties Cr Nb

分类号 TG-55 [金属学及工艺]

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Acta Metallurgica Sinica(English Letters)

1993年第3期

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EFFECTS OF Cr AND Nb ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF Fe_3Al ALLOYS

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