金属学报  1986, Vol. 22 Issue (6): 29-35

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不同Al含量γ′相的反相畴界能及其对GH99镍基合金强度的贡献

杨(木丹)森;魏育环;宋诚一;焦兰英

冶金工业部钢铁研究总院;冶金工业部钢铁研究总院;冶金工业部钢铁研究总院;冶金工业部钢铁研究总院

ANTIPHASE DOMAIN BOUNDARY ENERGY OF γ′ [Ni_3(Al,Ti)] PARTICLES WITH VARIOUS Al CONTENTS AND THEIR STRENGTHENING CONTRIBUTION TO A Ni-BASE ALLOY GH99

by YANG Nansen; WEI yuhuan; SONG Chenyi; JIAO Lanying (Central Iron and Steel Research Institute; Ministry of Metallurgical Indastry; Beijing)

杨(木丹)森;魏育环;宋诚一;焦兰英. 不同Al含量γ′相的反相畴界能及其对GH99镍基合金强度的贡献[J]. 金属学报, 1986, 22(6): 29-35.
, , , . ANTIPHASE DOMAIN BOUNDARY ENERGY OF γ′ [Ni_3(Al,Ti)] PARTICLES WITH VARIOUS Al CONTENTS AND THEIR STRENGTHENING CONTRIBUTION TO A Ni-BASE ALLOY GH99[J]. Acta Metall Sin, 1986, 22(6): 29-35.

摘要 参考文献 相关文章 Metrics 全文: PDF(1468 KB)   摘要: GH99镍基合金在室温拉伸变形条件下,被位错切割过渡到被位错绕过的γ'[Ni_3(Al,Ti)]质点的临界直径约为60nm.在同样条件下,该合金γ'强化的方式属于被位错切割机制.增加γ'相中Al含量能提高其反相畴界能和增大合金塑性变形的临界分切应力.GH99镍基合金的室温屈服强度理论计算值与实测值很接近.由γ'沉淀强化所贡献的强度占总强度的45％到64％,它随γ'相中Al含量的增多而增大.晶界碳化物强化所贡献的强度很少,只占2—3％。 Abstract：The critical diameter of γ′ [Ni_3(Al,Ti)] particales in the transition from dislocation cutting to by-passing in a Ni-base alloy GH99 under tensile deformation at room temperature is about 60 nm. Under the same condition, the γ′ strengthening mechanism is of the dislocation cutting. To the γ′-phase, an increase in Al content makes to raise its antiphase domain boundary energy and the critical resolved shear stress on plastic deformation of the alloy. The theoretically calculated yield strength of the alloy GH99 at room temperature is close to the measured one. The γ′ precipitation strengthening contributes to the yield strength of the alloy makiing up about 45 to 64% of the total, and increases with the increase of its Al content, But the strengthening by grain boundary carbide is not worth more than 2—3%. 收稿日期: 1986-06-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 杨(木丹)森 魏育环 宋诚一 焦兰英 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1986/V22/I6/29 1 Stoloff, N.S., The Superalloys, Eds. Sims, C.T.; Hagel, W.C., Wiley, New York, 1972, p. 79． 2 Martens, V.; Nembach, E., Acta Metalt., 23(1975) , 149． 3 Decker, R.F., Source Book on Materials for Elevated-Temperature Applications, Ed. Bradley, E.F., ASM, Metals Park, Ohio, 1979, p. 275． 4 朱静;师燕渝;焦兰英,GH99合金中γ′沉淀相的反相畴界能测定,中国航空学会透射电镜1984年学术交流会论文。 5 Brown, L.M.; Ham, R.K., Strengthening Methods in Crystals, Eds. Killy, A.; Nicholson, R. B., Elsevier, Amsterdam, 1971, p. 12． 6 Shimanuki, Y., Trans. Jpn. Inst. Met., 22(1981) , 6． 7 杨枬森;魏育环;于万众;董殿生,时效热处理温度对GH99合金γ’行为和力学性能的影响,待发表。 8 Kocks, U.F., Acta Metall., 6(1958) , 85． 9 Shimanuki-Y.; Doi, H., Trans. Jpn. Inst. Met., 16(1975) , 123． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed