Acta Metall Sin  1989, Vol. 25 Issue (6): 22-29    DOI:

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EFFECT OF Zr, Cr AND B ADDITIVES ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Ni_3 Al ALLOYS

GUO Jianting;LI Hui;SUN Chao;ZHU Yaoxiao Institute of Metal Research; Academia Sinica; Shenyang GUO Jianting; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015

GUO Jianting;LI Hui;SUN Chao;ZHU Yaoxiao Institute of Metal Research; Academia Sinica; Shenyang GUO Jianting; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015. EFFECT OF Zr, Cr AND B ADDITIVES ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Ni_3 Al ALLOYS. Acta Metall Sin, 1989, 25(6): 22-29.

Abstract References Related Articles Recommended Metrics Download:  PDF(2509KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The microstructure and the mechanical properties from room temper-ature up to 1050℃ of Ni_3Al base alloys containing 0--0.6 at.-%Zr, 0--7.7 at.-%Crand 0--2.22 at.-%B have been investigated. It was found that the temperature depen-dence of their yield strength variation reveals to be anomalous, i. e., the strengthincreases with the elevating of temperature, and thence decreases till it surpassedthe peak value. Both Zr and Zr + Cr may improve the yield strength of thealloys in the entire range or testing temperatures, as well as the tensile strengthand elongation under high temperature. B is favourable to raise the tensile andyield strength of the alloys, and also the plasticity. But the strength will reduce asB added over 1.37 at.-%. The Ni_(20)Al_3B_6 and Ni_3Al eutectic mixture like islandsand globes precipitated inside grain and along grain boundaries, which are harmfulto the strength and ductility, may be formed when the B content exceeds the limitof solubility. Key words:  Ni_3Al      microstructure      mechanical properties      yield strength      Received:  18 June 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/I6/22 1 青木清,和泉修.日本金属学会志,1979;43: 1190 2 Liu C T, Sikka V K. J Met, 1986; 38(5) : 19 3 Hsu S E, Hsu N N, Tong C H, Ma C Y. Lee S Y. In: Stoloff N S, Koch C C, Liu C T, Izumi O eds., Proc MRS Symp. High-Temperature Ordered Intermetallic Alloys Ⅱ, Vol. 81, Mars, Pennsylvania: MRS, 1987: 507 4 Liu C T, White C L, Horton J A. Acta Metall. 1985; 33: 213 5 Ochiai S, Oya Y, Suzuki T. Acta Metall, 1984; 32: 289 6 Ochiai S, Mishima Y, Yodogawa M, Suzuki T. Trans Jpn Inst Met, 1986: 27: 32 7 Chang K M, Huang S C, Taub A I. GE-CRD Report No. 86CRD202, 1986 8 Ogura T, Hanada S, Masumoto T, Izumi O. Metall Trans, 4, 1985; 16A: 441 9 李辉,刘祥,郭建亭,胡壮麒.金属学报,1989;25:A25 10 Schulson E M, Baker I, Frost H J. In: Stoloff N S, Koch C C, Liu C T, Izumi O eds., Proc MRS Symp. High-Temperature Ordered Intermetallic Alloys Ⅱ, Vol. 81, Mars. Pennsylvania: MRS, 1987: 195 [1] WANG Lei, LIU Mengya, LIU Yang, SONG Xiu, MENG Fanqiang. Research Progress on Surface Impact Strengthening Mechanisms and Application of Nickel-Based Superalloys[J]. 金属学报, 2023, 59(9): 1173-1189. [2] GONG Shengkai, LIU Yuan, GENG Lilun, RU Yi, ZHAO Wenyue, PEI Yanling, LI Shusuo. Advances in the Regulation and Interfacial Behavior of Coatings/Superalloys[J]. 金属学报, 2023, 59(9): 1097-1108. [3] ZHANG Leilei, CHEN Jingyang, TANG Xin, XIAO Chengbo, ZHANG Mingjun, YANG Qing. 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