Hardness Development of Mechanically-Bonded Hybrid Nanostructured Alloys through High-Pressure Torsion

Abstract:

Processing through the application of high-pressure torsion (HPT) provides significant grain refinement in bulk metals at room temperature. These ultrafine-grained (UFG) materials after HPT generally demonstrate exceptional mechanical properties. Recent reports demonstrated the bulk-state reactions for mechanical bonding of dissimilar lightweight metal disks to synthesize hybrid alloy systems by utilizing conventional HPT processing. Accordingly, the present report provides a comprehensive summary of the recent work on processing of several UFG hybrid alloy systems including Al-Mg and Al-Cu by HPT under 6.0 GPa at room temperature and a special emphasis was placed on understanding the evolution of hardness. This study demonstrates a significant opportunity for the application of HPT for a possible contribution to current enhancements in diffusion bonding, welding and mechanical joining technologies as well as to an introduction of hybrid engineering nanomaterials.

• Periodical: Materials Science Forum (Volume 1016)
• Pages: 177-182
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1016.177
• Online since: January 2021
• Authors: Megumi Kawasaki*, Terence G. Langdon
• Keywords: Hardness, High-Pressure Torsion, Intermetallic Compounds, Mechanical Bonding, Metal-Matrix Composite

References

[1] T.G. Langdon, Twenty-five years of ultrafine-grained materials: Achieving exceptional properties through grain refinement, Acta Mater. 61 (2013) 7035-7059.

DOI: 10.1016/j.actamat.2013.08.018

[2] A. P. Zhilyaev, T. G. Langdon, Using high-pressure torsion for metal processing: Fundamentals and applications, Prog. Mater. Sci. 53 (2008) 893-979.

DOI: 10.1016/j.pmatsci.2008.03.002

[3] B. Ahn, A.P. Zhilyaev, H.-J. Lee, M. Kawasaki, T.G. Langdon, Rapid synthesis of an extra hard metal matrix nanocomposite at ambient temperature, Mater. Sci. Eng. A 635 (2015) 109-117.

DOI: 10.1016/j.msea.2015.03.042

[4] M. Kawasaki, B. Ahn, H.J. Lee, A.P. Zhilyaev, T.G. Langdon, Using high-pressure torsion to process an aluminum–magnesium nanocomposite through diffusion bonding, J. Mater. Res. 31 (2016) 88-98.

DOI: 10.1557/jmr.2015.257

[5] B. Ahn, H.-J. Lee, I.-C. Choi, M. Kawasaki, J.-i. Jang, T.G. Langdon, Micro-mechanical behavior of an exceptionally strong metal matrix nanocomposite processed by high-pressure torsion, Adv. Eng. Mater. 18 (2016) 1001-1008.

DOI: 10.1002/adem.201500520

[6] J.-K. Han, H.-J. Lee, J.-I, Jang, M. Kawasaki, T.G. Langdon, Micro-mechanical and tribological properties of aluminum-magnesium nanocomposites processed by high-pressure torsion, Mater. Sci. Eng. A 684 (2017) 318-327.

DOI: 10.1016/j.msea.2016.12.067

[7] M. Kawasaki, S.N. Alhajeri, C. Xu, and T.G. Langdon, The development of hardness homogeneity in pure aluminum and aluminum alloy disks processed by high-pressure torsion, Mater. Sci. Eng. A 529 (2011) 345-351.

DOI: 10.1016/j.msea.2011.09.039

[8] H.-J. Lee, S.K. Lee, K.H. Jung, G.A. Lee, B. Ahn, M. Kawasaki, and T.G. Langdon, Evolution in hardness and texture of a ZK60A magnesium alloy processed by high-pressure torsion, Mater. Sci. Eng. A 630 (2015) 90-98.

DOI: 10.1016/j.msea.2015.02.011

[9] X. Wu, Y. Zhu, Heterogeneous materials: a new class of materials with unprecedented mechanical properties, Mater. Res. Lett. 5 (2017) 523-532.

[10] J.-K. Han, K.-D. Liss, T.G. Langdon, M. Kawasaki, Synthesis of a bulk nanostructured metastable Al alloy with extreme supersaturation of Mg, Sci. Rep. 9 (2019) 17186.

DOI: 10.1038/s41598-019-53614-3

[11] J.-K. Han, D.K. Han, G.Y. Liang, J.-i. Jang, T.G. Langdon, M. Kawasaki, Direct bonding of aluminum-copper metals through high-pressure torsion processing, Adv. Eng. Mater. 20 (2018) 1800642.

DOI: 10.1002/adem.201800642

[12] M. Kawasaki, Different models of hardness evolution in ultrafine-grained materials processed by high-pressure torsion, J. Mater. Sci. 49 (2014) 18-34.

DOI: 10.1007/s10853-013-7687-9

[13] A.P. Zhilyaev, S. Lee, G.V. Nurislamova, R.Z. Valiev, T.G. Langdon, Microhardness and microstructural evolution in pure nickel during high-pressure torsion, Scripta Mater. 44 (2001) 2753-2758.

DOI: 10.1016/s1359-6462(01)00955-1

[14] D. Hernández-Escobar, J. Marcus, J.-K. Han, R.R. Unocic, M. Kawasaki, C.J. Boehlert, Effect of post-deformation annealing on the microstructure and micro-mechanical behavior of Zn–Mg hybrids processed by high-pressure torsion, Mater. Sci. Eng. A 771 (2019) 138578.

DOI: 10.1016/j.msea.2019.138578