Advertisement

Microstructure and Properties of Mn-Cu-Based Damping Alloys Prepared by Ball Milling and Hot-Press Sintering

  • Song ZhangEmail author
  • Xi-Ping Guo
  • Ye Tang
  • Wei-Xing You
  • Yong-Gang Xu
Article
  • 24 Downloads

Abstract

A Mn-Cu-based damping alloy with a nominal composition of 70Mn-24Cu-3Zn-3Al (at.%) was prepared by ball milling of pure elemental powders and subsequent hot-press sintering of powder mixture at 750 and 825 °C for 2 h. For comparison, this alloy was also prepared by induction melting technology and then homogenized at 850 °C for 24 h. Further, they were aged at 430 °C for 2 h. The microstructure, damping capacity and microhardness of the hot-press-sintered and induction-melted alloys have been investigated. The results show that the microstructure of the powder mixture upon ball milling mainly comprises convoluted composite particles containing α-Mn and γ-Cu phases, and isolated α-Mn ones around. The high compactness of the alloys is obtained after hot-press sintering (94.8 and 98.6% at 750 and 825 °C, respectively). At a holding temperature of 750 °C, the microstructure of the alloy is primarily composed of γ-MnCu, γ-CuMn and α-Mn grains. With increasing the target temperature to 825 °C, the single γ-MnCu solid solution has been formed in the alloy by diffusion of Mn etc. into γ-Cu lattices. The hot-press-sintered alloys (especially at 825 °C) possess relatively high damping capacity although which is still lower than that of induction-melted one. In contrast, the microhardness of the hot-press-sintered alloys (especially at 750 °C) is obviously higher than that of the induction-melted one.

Keywords

ball milling damping capacity hot-press sintering microhardness microstructure Mn-Cu-based alloy 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (No. 51701167), Fundamental Research Funds for the Central Universities (No. 2682017CX073) and Fund of the State Key Laboratory of Solidification Processing in NWPU (No. SKLSP201825).

References

  1. 1.
    D. Weng, S. Liu, and J. He, Research and Industrialization Status of Mn-Based Damping Alloys, Sci. Technol. Rev., 2014, 32(3), p 77–83Google Scholar
  2. 2.
    F. Yin, Y. Ohsawa, A. Sato, and K. Kawahara, Temperature Dependent Damping Behavior in a Mn-18Cu-6Ni-2Fe Alloy Continuously Cooled in Different Rates from the Solid Solution Temperature, Scripta Mater., 1998, 38(9), p 1341–1346CrossRefGoogle Scholar
  3. 3.
    F. Yin, T. Sakaguchi, Q. Tian, A. Sakurai, and K. Nagai, The Twining Microstructure and Damping Behavior in Mn-30Cu (at.%) Alloy, Mater. Trans., 2005, 46(10), p 2164–2168CrossRefGoogle Scholar
  4. 4.
    J. Yan, N. Li, X. Fu, and Y. Zhang, The Strengthening Effect of Spinodal Decomposition and Twinning Structure in MnCu-Based Alloy, Mater. Sci. Eng. A, 2014, 618, p 205–209CrossRefGoogle Scholar
  5. 5.
    F. Yin, Y. Ohsawa, A. Sato, and K. Kawahara, Phase Decomposition of the γ Phase in a Mn-30 at.% Cu Alloy During Aging, Acta Mater., 2000, 48, p 1273–1282CrossRefGoogle Scholar
  6. 6.
    G.V. Markova, Internal Friction During Martensitic Transformation in High Manganese Mn-Cu Alloys, Mater. Sci. Eng. A, 2004, 370, p 473–476CrossRefGoogle Scholar
  7. 7.
    F. Yin, K. Nagai, K. Watanabe, and K. Kawahara, The Damping Behavior of Ni Added Mn-Cu Damping Alloys, Mater. Trans., 2003, 44(9), p 1671–1674CrossRefGoogle Scholar
  8. 8.
    L.J. Zhang and X.P. Guo, Mechanical Alloying Behavior of Nb-Ti-Si-Based Alloy Made from Elemental Powders by Ball Milling Process, Rare Met., 2017, 36(3), p 174–182CrossRefGoogle Scholar
  9. 9.
    M. Fukuhara, F. Yin, Y. Ohsawa, and S. Takamori, High-Damping Properties of Mn-Cu Sintered Alloys, Mater. Sci. Eng. A, 2006, 442, p 439–443CrossRefGoogle Scholar
  10. 10.
    Z. Wang, F. Lu, B. Wu, R. Xu, J. Zhang, D. Zhao, and F. Luo, Influence of Sintering Temperature on Properties of M2052 Alloy Prepared by Powder Metallurgy, J. Funct. Mater., 2016, 47(9), p 09211–09215Google Scholar
  11. 11.
    X. Zhou, M. Wang, and H. Zhao, Microstructure Characteristics of High Borated Stainless Steel Fabricated by Hot-Pressing Sintering, J. Alloys Compd., 2016, 665, p 100–106CrossRefGoogle Scholar
  12. 12.
    T. Yang, X. Guo, and Y. Luo, Microstructural Evolution of Mechanically Alloyed Mo-Si-B-Zr-Y Powders, Int. J. Refract. Met. H., 2016, 56, p 35–43CrossRefGoogle Scholar
  13. 13.
    Z. Zhong, W. Liu, N. Li, J. Yan, J. Xie, D. Li, Y. Liu, X. Zhao, and S. Shi, Mn Segregation Dependence of Damping Capacity of As-Cast M2052 Alloy, Mater. Sci. Eng. A, 2016, 660, p 97–101CrossRefGoogle Scholar
  14. 14.
    W. Liu, N. Li, Z. Zhong, J. Yan, D. Li, Y. Liu, X. Zhao, and S. Shi, Novel Cast-Aged MnCuNiFeZnAl Alloy with Good Damping Capacity and High Usage Temperature Toward Engineering Application, Mater. Des., 2016, 106, p 45–50CrossRefGoogle Scholar
  15. 15.
    F. Yin, Y. Ohsawa, A. Sato, and K. Kawahara, X-ray Diffraction Characterization of the Decomposition Behavior of γMn Phase in a Mn-30at.%Cu Alloy, Scripta Mater., 1999, 40(9), p 993–998CrossRefGoogle Scholar
  16. 16.
    J.M. Vitek and H. Warlimont, On a Metastable Miscibility Gap in γ-Mn-Cu Alloys and the Region of Their High Damping Capacity, Met. Sci., 1976, 10(1), p 7–13CrossRefGoogle Scholar
  17. 17.
    F.S. Lu, B. Wu, J.F. Zhang, P. Li, and D.L. Zhao, Microstructure and Damping Properties of MnCuNiFeCe Alloy, Rare Met., 2016, 35(8), p 615–619CrossRefGoogle Scholar
  18. 18.
    Y. Zhong, T. Sakaguchi, and F. Yin, Effects of Transformation Twin on Hall-Petch Relationship in MnCu Alloy, Mater. Sci. Eng. A, 2008, 492, p 419–427CrossRefGoogle Scholar
  19. 19.
    Y. Zhong, F. Yin, T. Sakaguchi, K. Nagai, and K. Yang, Dislocation Structure Evolution and Characterization in the Compression Deformed Mn-Cu Alloy, Acta Mater., 2007, 55, p 2747–2756CrossRefGoogle Scholar

Copyright information

© ASM International 2019

Authors and Affiliations

  • Song Zhang
    • 1
    Email author
  • Xi-Ping Guo
    • 2
  • Ye Tang
    • 2
  • Wei-Xing You
    • 1
  • Yong-Gang Xu
    • 1
  1. 1.Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduPeople’s Republic of China
  2. 2.State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China

Personalised recommendations