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Physical Metallurgy

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High-Entropy Alloys

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Abstract

Physical metallurgy is a branch of materials science, especially focusing on the relationship between composition, processing, crystal structure and microstructure, and physical and mechanical properties. Because all properties are the manifestation of compositions, structure and microstructure, thermodynamics, kinetics, and plastic deformation, factors as encountered in processing control become very important to control phase transformation and microstructure and thus properties of alloys. All the underlying principles have been well built and physical metallurgy approaches mature. However, traditional physical metallurgy is based on the observations on conventional alloys. As composition is the most basic and original factor to determine the bonding, structure, microstructure, and thus properties to a certain extent, physical metallurgy principles might be different and need to be modified for HEAs which have entirely different compositions from conventional alloys. The most distinguished effects in HEAs are high-entropy, severe lattice distortion, sluggish diffusion, and cocktail effects. This chapter will present and discuss the corresponding subjects of physical metallurgy based on these effects.

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Acknowledgments

J.W.Y. would like to acknowledge all the financial supports from the Ministry of Science and Technology, Ministry of Economic Affairs, and National Tsing Hua University, R.O.C.

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  1. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013, Republic of China

    Jien-Wei Yeh

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Editors and Affiliations

  1. National Energy Technology, Laboratory & AECOM, Albany, Oregon, USA

    Michael C. Gao

  2. Department of Materials Science and Eng, National Tsing Hua University, Hsinchu, Taiwan

    Jien-Wei Yeh

  3. Department of Materials Science and Eng, The University of Tennessee, KNOXVILLE, Tennessee, USA

    Peter K. Liaw

  4. State Key Laboratory for Advanced Metal, University of Science and Technology, Bei**g, China

    Yong Zhang

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Yeh, JW. (2016). Physical Metallurgy. In: Gao, M., Yeh, JW., Liaw, P., Zhang, Y. (eds) High-Entropy Alloys. Springer, Cham. https://doi.org/10.1007/978-3-319-27013-5_3

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