| 摘要 |
<p>A method for surface and subsurface grain refining of a bulk hydrogen- absorbing metal includes the steps of cathodically charging the bulk hydrogen-absorbin g metal with an electric current in the presence of a source of hydrogen to hydride the hydrogen-absorbing metal, and, changing polarity of the electric current to dehydride the hydrogen-absorbing metal. The method results in improvement to hardness and/or wear resistance of the metal, particularly titanium alloys such as Ti-6Al-4V. Metals treated with this method are particularly useful for medical implan ts and vehicle parts in which improved hardness and/or wear resistance is required.</p> |
