Method of producing a nano-winned titanium material by casting

Abstract

The invention relates to a method of producing a nano twinned commercially pure titanium material comprising the steps of: - casting a commercially pure titanium material that apart from titanium contains not more than 0.05 wt% N, not more than 0.08 wt% C, not more than 0.015 wt% H, not more than 0.50 wt% Fe, not more than 0.40 wt% O, and not more than 0.40 wt% residuals, - bringing the material to a temperature at or below 0 DEG C, and - imparting plastic deformation to the material at that temperature to such a degree that nano twins are formed in the material.

Description

technical field [0001] The present invention relates to methods of making commercially pure titanium materials containing nanotwins. Background technique [0002] Titanium has a large number of applications in which its favorable mechanical properties and its relatively low specific weight are highly valued. In certain applications, it is of interest to use commercially pure titanium instead of more commonly used alloys such as Ti-6Al-4V. This is of particular interest in applications where the final product comes into contact with human tissue on a daily basis, typically implants but also other forms such as jewellery, piercings, etc. [0003] This is due to the fact that vanadium, commonly present in Ti-6Al-4V and other mechanically advantageous alloys, is toxic and causes allergies and is therefore unsuitable for inclusion in materials used as implants or other similar applications. Furthermore, commercially pure titanium is generally considered to be more biocompatible...

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Problems solved by technology

[0011] However, no method is known for increasing the streng

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