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Abstrakt

This study suggests a new way to modify the size and morphology of Al-Fe phases in modified AA 7075 by using an Fe-Mn solid solution powder as the precursor. When Fe and Mn are added in the form of a solid solution, the diffusion of Fe and Mn toward the Al is delayed, thus altering the chemical composition and morphology of the precipitates. The fine, spherical precipitates are found to provide a good balance between strength and ductility compared to the case where Fe and Mn are separately added.
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Bibliografia

[1] E.A. Starke Jr, J.T. Staley, Prog. Aerospace Sci. 32, 131 (1996).
[2] J.H. Cha, S.H. Kim, Y-S. Lee, H.W. Kim, Y.S. Choi, Met. Mater. Int. 22, 5 (2016)
[3] H.M. Hu, E.J. Lavernia, W.C. Harrigan, J. Kajuch, S.R. Nutt, Mater. Sci. Eng. A 297, 94 (2001).
[4] Z.M. Shi, K. Gao, Y.T. Shi, Y. Wang, Mater. Sci. Eng. A 632, 62 (2015).
[5] S.B. Sun, L.J. Zheng, J.H. Liu, H. Zhang, J. Mater. Sci. Technol. 33, 389 (2017).
[6] S.K. Das, J.A.S. Green, J.G. Kaufman, JOM 59, 47 (2007).
[7] A. Gesing, L. Berry, R. Dalton, R. Wolanski, Proceedings of the TMS 2002 Annual Meeting: Automotive Alloys and Aluminum Sheet and Plate Rolling and Finishing Technology Symposia, Warrendale, PA, USA, 18-21 February (2002) p. 3-15.
[8] S.G. Shabestari, J.E. Gruzleski, Cast Metals 6, 4, 217 (1994)
[9] W. Wang, R.G. Guan, Y. Wang, R.DK. Misra, B.W. Yang, Y.D. Li, T.J. Chen, Mater. Sci. Eng. A 751, 23 (2019)
[10] J. Mathew, G. Remy, M.A. Williams, F. Tang, P. Srirangam, JOM, 71, 12 (2019)
[11] X. Zhu, P. Blake, S. Ji, Crys. Eng, Comm. (2018) https://doi.org/10.1039/C8CE00675J
[12] R.S. Rana, R. Purohit, S. Das, Int. J. Sci. Res. Pub. 2, 6 (2012)
[13] L. Li, Y.D. Zhang, C. Esling, H.X. Jiang, Z.H. Zhao, Y.B. Zuo, J.Z. Cui, J. Cryst. Growth. 339, 61 (2012).
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[17] S.G. Shabestari, Mater. Sci. Eng. A 383, 2, 289 (2004)
[18] D.R. Gaskell, Introduction to the Thermodynamics of materials, 5th edn. (Taylor & Francis Group, New York, 2008)
[19] P.W. Beaver, B.A. Parker, Mater. Sci. Eng. A 82, 217 (1986).
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Autorzy i Afiliacje

Min Sang Kim
1 2
ORCID: ORCID
Dae Young Kim
3
ORCID: ORCID
Young Do Kim
1
ORCID: ORCID
Hyun Joo Choi
3
ORCID: ORCID
Se Hoon Kim
2
ORCID: ORCID

  1. Hanyang University, Department of Materials Science & Engineering, Seoul, Republic of Korea
  2. Metallic Material R&D Center, Korea Automotive Technology Institute, Cheonan-si, Republic of Korea
  3. Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

Abstrakt

The aluminum composite with dispersed high entropy alloy were developed by stir casting involving the powder-in-tube method. First, Al0.5CoCrCuFeNi high entropy alloy (HEA) powder was made by mechanical alloying, and the powder was extruded in a tube-type aluminum container to form HEA precursor. The extruded HEA precursor was then dispersed in the aluminum matrix via stir casting. As a result, Fe-Cr-Ni based high-entropy phases was uniformly formed in the aluminum matrix, revealing ~158, 166, 235% enhancement of tensile strength by incorporating 1, 3, and 5 wt% HEA particles, respectively.
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Autorzy i Afiliacje

Min Sang Kim
1 2
ORCID: ORCID
Han Sol Son
3
ORCID: ORCID
Gyeong Seok Joo
2
ORCID: ORCID
Young Do Kim
1
ORCID: ORCID
Hyun Joo Choi
3
ORCID: ORCID
Se Hoon Kim
2
ORCID: ORCID

  1. Hanyang University, Department of Materials Science & Engineering, Seoul, Republic of Korea
  2. Korea Automotive Technology Institute, Metallic Material R&D Center, Cheonan-si, Republic of Korea
  3. Kookmin University, School of Materials Science and Engineering, Seoul, Republic of Korea

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