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Precipitation of µ Phase in Nickel-based Powder Metallurgy Superalloy FGH97

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Abstract

The precipitation behavior of topological close-packed (TCP) µ phase in powder metallurgy (P/M) nickel-based superalloy FGH97 was investigated. The results showed that proper addition of solution strengthening elements, such as Co, Cr, W, Mo, improved tensile strength, while excessive addition of those elements facilitated the precipitation of µ phase, which seriously aggravated the plasticity of the P/M superalloy. For the heat-treated specimens, the relationship between critical aging time (when µ started to precipitate), aging temperature, and the average electron vacancy number of γ matrix was established.

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Authors and Affiliations

  1. High Temperature Material Institute, Central Iron and Steel Research Institute, 100081, Beijing, China

    Li-ming Tan (Master Candidate), Yi-wen Zhang (Doctor, Professor), Jian Jia & Shou-bo Han

  2. Beijing Key Laboratory of Advanced High Temperature Materials, 100081, Beijing, China

    Li-ming Tan (Master Candidate), Yi-wen Zhang (Doctor, Professor), Jian Jia & Shou-bo Han

Authors
  1. Li-ming Tan
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  2. Yi-wen Zhang
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  3. Jian Jia
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  4. Shou-bo Han
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Corresponding authors

Correspondence to Li-ming Tan or Yi-wen Zhang.

Additional information

Foundation Item: Item Sponsored by International Science and Technology Cooperation Program of China (2014DFR50330)

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Tan, Lm., Zhang, Yw., Jia, J. et al. Precipitation of µ Phase in Nickel-based Powder Metallurgy Superalloy FGH97. J. Iron Steel Res. Int. 23, 851–856 (2016). https://doi.org/10.1016/S1006-706X(16)30130-3

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  • DOI: https://doi.org/10.1016/S1006-706X(16)30130-3

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