Acta Metall Sin  1989, Vol. 25 Issue (1): 25-30    DOI:

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INFLUENCE OF BORON ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF RAPIDLY SOLIDIFIED Ni_3Al

LI Hui;LIU Xiang;GUO Jianting;HU Zhuangqi Institute of Metal Research; Academia Sinica; Shenyang Northeast Institute of Technology; Shenyang Institute of Metal Research; Academia Sinica; Shenyang

LI Hui;LIU Xiang;GUO Jianting;HU Zhuangqi Institute of Metal Research; Academia Sinica; Shenyang Northeast Institute of Technology; Shenyang Institute of Metal Research; Academia Sinica; Shenyang. INFLUENCE OF BORON ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF RAPIDLY SOLIDIFIED Ni_3Al. Acta Metall Sin, 1989, 25(1): 25-30.

Abstract References Related Articles Recommended Metrics Download:  PDF(2619KB)  Export:  BibTeX | EndNote (RIS)       Abstract  By means of nonstoichiometry, rapid solidification and adequate bo-ron addition, the tensile strength and bending resistance of Ni_3Al has been improved.When adding 0.52 to 1.37 at.-% B into Ni_3Al, which has the beneficial effect onthe ductility. If boron addition is too high, there are coarse Ni_(23)B_6 particles andNiB_(12) phases found on the grain boundaries. Boron modification in Ni_3Al promotesthe ordering in the region near grain boundaries. The grain boundary of boron freeNi_3Al is a large angle one, but turns into a small angle grain boundary with sub-grains of dislocation characteristics when the boron content in Ni_3Al reaches 1.37at.-%. Key words:  intermetallic compound      microstructure      mechanical property      rapid solidification      Received:  18 January 1989      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/Y1989/V25/I1/25 1 Pope D P. In: Stoloff N S, Koch C C, Liu C T, Izumi O eds., High-Temperature Ordered Intermetallic Alloys Ⅱ. Proc of MRS, Vol. 81, Mars, Pennsylvania: Choice Book, 1987: 93 2 Pope D P, Ezz S S. Int Metall Rev, 1984; 29 (3) : 137 3 Takaougi T, Izumi O, Masdhashi N, Acta Metall, 1985; 33: 1259 4 Talasugi T, Izumi O. Acta Metall, 1985; 33: 1247 5 Liu C T. In: Stoloff N S, Koch C C, Liu C T, Izumi O eds., High-Temperature Ordered Intermetallic Alloys Ⅱ, Proc of MRS, Vol. 81, Mars, Pennsylvania: Choice Book, 1987; 355 6 McLean M, Strang A. Met Tech, 1984; 11 (10) : 414 7 Sikka V K. 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