Acta Metall Sin  1994, Vol. 30 Issue (11): 515-520    DOI:

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EFFECT OF BORON ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF Fe_3Al ALLOYS

YIN Weimin;GUO Jianting; HU Zhuangqi (Institute of Metal Research; Chinese Academy of Sciences;Shenyang)(Manuscript received 24 November;1993; in revised form 30 March; 1994)

YIN Weimin;GUO Jianting; HU Zhuangqi (Institute of Metal Research; Chinese Academy of Sciences;Shenyang)(Manuscript received 24 November;1993; in revised form 30 March; 1994). EFFECT OF BORON ON MECHANICAL PROPERTIES AND MICROSTRUCTURE OF Fe_3Al ALLOYS. Acta Metall Sin, 1994, 30(11): 515-520.

Abstract References Related Articles Recommended Metrics Download:  PDF(556KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Effect of B addition on the microstructure and mechanical properties of Fe-28Al-1. 94Cr alloy was investigated. In the alloy containing 0.038at.-%B, some fine (Fe, Cr)_2 B particles were found to precipitate, and these were tending in quantity and size as B content increasing. When B was up to 1. 18 at.-%, (Fe, Cr)_2 B precipitated in the form of network. Addition of B ranged 0.038 to 0.22at.-% into Fe_3Al alloy may remarkably improve the room temperature ductility and strength. The alloy containing 0.038at.-%B makes the increase of its compressive yield strength from 532 to 678 MPa, and its ductility from 15 to 25%. If the alloy is in excess of B, saying 1.18at.-%, not only reduction of ductility but also decrease of strength will be obvious. Less B in the alloy may be beneficial to its ductility at elevated temperature up to 600℃, while more B may improve its high temperature strength. Correspondent:GUO Jianting, professor,（Institute of Metal Research, Chinese Academy of Sciences, Shenyang110015） Key words:  boron      Fe_3Al      mechanical property      microstructure      Received:  18 November 1994      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/Y1994/V30/I11/515 1AokiK,IzumiO,J．JpnInstMet,1979;43:11902TakasugiT．,TakazawaM．andIzumiO．J MaterSci,1990;25:42313 HortonJA,LiuCT,KochCC．HighTemperatureAlloys:TheoryandDesign,ForceBase,Ohio,1982:3094 LongworthHP,MikkolaDE．MaterSciEng,1987,96:2275McKameyCG,HortonJA,LiuCT．ScrMetall,1988;22:16796Hans-JurgenKrause,JamesEdwardWittig,GeorgeFrommeyer．ZMetallk,1987;78:5767PopielE,TuszynskiM,ZarekW,RendeckiT．J Less-CommonMet,1989;146:1278SikkaVK,McKameyCG,HowellCR,BaldwinRH．DE91-001001,19909 Munroe P R,BakerI．ActaMetall,1991;39:101110邵元智,顾守仁,陈南平,王治政．材料科学进展,1992;6:4211邵元智,顾守仁,陈南平．金属学报,1991;27A;105r [1] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. 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