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Metals 2014, 4(1), 37-54; doi:10.3390/met4010037
Article

The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire

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Received: 26 November 2013; in revised form: 16 January 2014 / Accepted: 23 January 2014 / Published: 7 February 2014
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Abstract: An accumulative swaging and bundling technique is used to prepare composite wires made of Ti and an Al alloy. These wires show reasonable higher yield stresses than expected from the pure material flow curves. The additional strengthening in the composite is analyzed using nanoindentation measurements, tensile testings and investigations of the microstructure. In addition, these properties are analyzed in relation to the fracture surface of the mechanically tested wires. Additional strengthening due to the presence of phase boundaries could be verified. Indications for residual stresses are found that cause a global hardness gradient from the center to the wire rim. Finally, the yield stress of the wires are calculated based on local hardness measurements.
Keywords: SPD; Ti; Al; nanoindentation; mechanical properties SPD; Ti; Al; nanoindentation; mechanical properties
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Marr, T.; Freudenberger, J.; Maier, V.; Höppel, H.W.; Göken, M.; Schultz, L. The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire. Metals 2014, 4, 37-54.

AMA Style

Marr T, Freudenberger J, Maier V, Höppel HW, Göken M, Schultz L. The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire. Metals. 2014; 4(1):37-54.

Chicago/Turabian Style

Marr, Tom; Freudenberger, Jens; Maier, Verena; Höppel, Heinz W.; Göken, Mathias; Schultz, Ludwig. 2014. "The Strengthening Effect of Phase Boundaries in a Severely Plastically Deformed Ti-Al Composite Wire." Metals 4, no. 1: 37-54.


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