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Microstructure and mechanical property of MIM 418 superalloy

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Abstract

In this study, the influence of hot isostatic pressing (HIP) process on the 418 alloy produced by metal injection molding (MIM) technique (named as MIM 418) was investigated based on the characteristic analysis of 418 alloy powder. And comparison analysis of the microstructure and mechanical property between the MIM 418 and as-cast 418 alloys was performed by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The results show that MIM 418 alloy exhibits fine grain (~30 μm) and uniform microstructure. The defects existing in MIM 418 alloy formed during sintering process can be eliminated through HIP treatment, and the relative density increases from 97.0 % to 99.5 %. The mechanical property can be improved significantly because of the elimination of defects, and the tensile strength and elongation are 1,271 MPa and 16.8 %, respectively, which are increased by 34.5 % and 180 % compared with K418 alloy after solution heat treatment.

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References

  1. Huang QY. Superalloy. Beijing: Metallurgical Industrial Press; 2001. 120.

  2. Long F, Yoo YS, Jo CY, Seo SM, Song YS, Jin T, Hu ZQ. Formation of η and σ phase in three polycrystalline superalloys and their impact on tensile properties. Mater Sci Eng A. 2009;527(1–2):361.

    Article  Google Scholar 

  3. Cui CY, Gu YF, Ping DH, Harada H. Microstructural evolution and mechanical properties of a Ni-based superalloy, TMW-4. Metal Mater Trans. 2009;40(2):282.

    Article  Google Scholar 

  4. Xiang DQ, Ding L. New technologies of sintering W–Ni–Fe heavy alloys. Chin J Rare Met. 2013;37(1):155.

    Google Scholar 

  5. Huang BY. Powder Metallurgy. Beijing: Metallurgical Industrial Press; 2011. 7.

    Google Scholar 

  6. Ruprecht R, Gietzelt T, Müller K, Piotter V, Haubelt J. Injection molding of microstructured components from plastic, metals and ceramics. Microsyst Technol. 2002;8(4–5):351.

    Article  Google Scholar 

  7. Pickens JR. Aluminium powder metallurgy technology for high-strength application. J Mater Sci. 1981;16(6):1437.

    Article  Google Scholar 

  8. Gulsoy HO, Ozbek S, Gunay V, Baykara T. Mechanical properties of powder injection molded Ni-based superalloys. Adv Mater Research. 2011;278(2):289.

    Article  Google Scholar 

  9. Ozgun O, Gulsoy HO, Yilmaz R, Findik F. Injection molding of nickel based 625 superalloy: sintering, heat treatment, microstructure and mechanical properties. J Alloy Compd. 2013;546(2):192.

    Article  Google Scholar 

  10. Ozgun O, Gulsoy HO, Yilmaz R, Findik F. Microstructural and mechanical characterization of injection molded 718 superalloy powders. J Alloy Compd. 2013;576(3):140.

  11. Appa Rao G, Satya Prasad K, Kumar M, Srinivas M, Sarma DS. Characterisation of hot isostatically pressed nickel base superalloy Inconel 718. Mater Sci Technol. 2003;19(1):313.

    Google Scholar 

  12. Vervoort PJ, Vetter R, Duszczyk J. Overview of powder injection molding. Adv Perform Mater. 1996;3(2):121.

    Article  Google Scholar 

  13. Niang A, Viguier B, Lacaze J. Some features of anisothermal solid-state transformations in alloy 718. Mater Charact. 2010;61(5):525.

    Article  Google Scholar 

  14. Majumdar S, Raveendra S, Samajdar I, Bhargava P, Sharma IG. Densification and grain growth during isothermal sintering of Mo and mechanically alloyed Mo-TZM. Acta Mater. 2009;57(14):4158.

    Article  Google Scholar 

  15. Guo JT. Materials Science and Engineering for Superalloy. Beijing: Sciences Press; 2010. 295.

    Google Scholar 

  16. Yang JX, Li JG, Wang M, Wang YH, Jin T, Sun XF. Effect of heat treatment process on the microstructure and properties of a new cast nickel-based superalloy. Acta Metall Sin. 2012;48(6):0654.

    Article  Google Scholar 

Download references

Acknowledgments

This study was financially supported by the National High Technology Research and Development Program of China (No. 2012AA03AA514).

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Authors and Affiliations

  1. National Engineering and Technology Research Center for Nonferrous Metal Matrix Composites, General Research Institute for Nonferrous Metals, Beijing, 100088, China

    Fu-Bao Yang, Yan-Hong Jing, Da-Quan Li & Qiang Zhu

  2. Powder Metallurgy Research Institute, University of Science and Technology Beijing, Beijing, 100083, China

    Dan Li & Lin Zhang

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  1. Fu-Bao Yang
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  2. Yan-Hong Jing
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  3. Dan Li
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  4. Lin Zhang
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  5. Da-Quan Li
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  6. Qiang Zhu
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Correspondence to Fu-Bao Yang.

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Yang, FB., Jing, YH., Li, D. et al. Microstructure and mechanical property of MIM 418 superalloy. Rare Met. 37, 35–39 (2018). https://doi.org/10.1007/s12598-014-0419-8

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  • DOI: https://doi.org/10.1007/s12598-014-0419-8

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