Acta Metall Sin  1990, Vol. 26 Issue (1): 20-25    DOI:

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EFFECT OF ALLOYING ELEMENT ON MECHANICAL PROPERTIES OF Fe_3AL AND FeAl ALLOYS

GUO Jianting;SUN Chao;TAN Minghui;LI Hui;LAI Wanhui Institute of Metal Research; Academia Sinica; Shenyang professor;Institute of Metal Research;Academia Sinica; Shenyang 110015

GUO Jianting;SUN Chao;TAN Minghui;LI Hui;LAI Wanhui Institute of Metal Research; Academia Sinica; Shenyang professor;Institute of Metal Research;Academia Sinica; Shenyang 110015. EFFECT OF ALLOYING ELEMENT ON MECHANICAL PROPERTIES OF Fe_3AL AND FeAl ALLOYS. Acta Metall Sin, 1990, 26(1): 20-25.

Abstract References Related Articles Recommended Metrics Download:  PDF(1506KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The effect of alloying elements such as Mo, Si or B and its stoichoi-metric composition on the tensile properties at room and elevated temperatures, andalso on the microstructure has been investigated. Two Fe aluminides were found tobe obviously strengthened by all of three elements, but seriously embrittled by Moand Si. An improvement over the plasicity of FeAl may be made by adding B. Thefracture surface is varied from intergranular to transgranular cleavage type. Theroom temperature plasticity of the Fe-rich Fe_3Al or Al-rich FeAl is much betterthan that of the stoichoimetric aluminides. An anomalous temperature dependenceon the yield strength of Fe_3Al in range of 400 to 550℃ or of FeAl in 400 to500℃ was found. Discussion has been carried out by the aspect of microstrutures. Key words:  intermetallic compound      Fe_3Al      FeAl      mechanical properties      alloying element      microstructure      Received:  18 January 1990      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1990/V26/I1/20 1 McKamey C G, Horton J A, Liu C T. In: Stoloff N S, Kccb C C, Liu C T, Izumi O eds., HighTemperature Ordered Intermctallic Alloys Ⅱ, Pittsburgh, Pennsylvania: Materials Research Society, 1987: 321--327 2 Marcinkowski M J, Taylor M E, Kayser F X. J Mater Sci, 1975; 10: 406--419 3 Mendiratta M G, Ehlers S K, Dimiduk D M, Kerr W B, Mazdiyasni S, Lipsitt H A. In: Stoloff N S, Koch C C, Liu C T, Izumi O eds., High-Temperature Ordered Intermetallic Alloys Ⅱ, Pittsburgh, Pennsylvania: Materials Research Society, 1987: 393--404 4 Mendiratta M G, Lipsitt H A. 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