金属学报  1978, Vol. 14 Issue (3): 284-337

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难变形镍铬钴基高温合金中σ相对合金力学性能的影响

陈淦生;姚常春;仲增墉

北京钢铁研究院;北京钢铁研究院;北京钢铁研究院

THE EFFECT OF σ-PHASE IN CERTAIN Ni-Cr-Co BASE SUPERALLOY

Chen Gan-sheng Yao Chang-chun Zhong Zeng-yong(Beijing Institute of Iron and Steel Research)

陈淦生;姚常春;仲增墉. 难变形镍铬钴基高温合金中σ相对合金力学性能的影响[J]. 金属学报, 1978, 14(3): 284-337.
, , . THE EFFECT OF σ-PHASE IN CERTAIN Ni-Cr-Co BASE SUPERALLOY[J]. Acta Metall Sin, 1978, 14(3): 284-337.

摘要 参考文献 相关文章 Metrics 全文: PDF(4240 KB)   摘要: 研究结果表明,难变形镍铬钴基高温合金,在长期时效中,微量和少量σ相的析出,对合金的力学性能没有明显的影响;析出多量σ相,则显著降低合金的室温拉伸、冲击韧性、持久、蠕变和断裂韧性,此时材料的断裂沿σ相界面发展。但对高温拉伸性能没有影响。 σ相在室温是一种硬而脆的相,在较高温度时显示了一定塑性,可以发生较大变形。 Abstract：An investigation has been carried out on the effect of σ-phase on the mechanical properties of a Ni-Cr-Co based superalloy. Specimens treated to different amount of σ-phase were compared with the same alloy without such phase. It was found that specimens containing σ-phase up to 0.7% (by volume)showed little deterioration in properties, whereas in the case of those with σ-phase amounted to 2—4%, the room temperature tensile strength, impact toughness, endurance, creep and fracture toughness of the alloy were very markedly lowered. Moreover, cracks along the interfaces between the σ-phase grains and the matrix were often observed. Tensile properties at high temperatures, however, seems to be little affected by such phase. It would appear that σ-phase, being hard and brittle at room temperature, becomes deformable at elevated temperatures. 收稿日期: 1978-03-18      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 陈淦生 姚常春 仲增墉 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1978/V14/I3/284 [1] Dreshfield, R. L. and Ashbrook, R. L., NASA TND-6015, (1969) . [2] Dreshfield, R. L. and Ashbrook, R. L., NASA TN D-7654, (1974) . [3] Sims, C. T., The Superalloys, ed. by C. T. Sims and W. C. Hagel, Wiley, New York, (1972) , 259． [4] Mihslidin, J. R. et al., Trans. AIME, 242 (1968) , 2399． [5] Chaudhuri, A., J. Inst. Metals, 100 (1972) , 335． [6] Woodyatt, L. R. et al., Trans. AIME, 236 (1966) , 519．N No related articles found! Viewed Full text Abstract Cited   Shared      Discussed