In-situ formed graded microporous structure in titanium alloys and its effect on the mechanical properties

• A simple method was developed to fabricate porous titanium.
• The method allows fabricating graded microporous structures.
• Their mechanical properties were superior to other sintered porous titanium.
• The stiffness of the microporous titanium alloys was reduced.
• The method can be applied to synthesize other porous alloys.

A simple method to fabricate porous titanium was developed, with which the graded microporous titanium alloys could be prepared by simply casting. The in-situ formed graded microporous structure and its effect on the mechanical properties of the titanium alloys were investigated. The results indicated that the mechanical properties of such graded microporous titanium alloys were superior to the porous titanium fabricated by other methods. This work provides a bright prospect for the production of graded porous titanium alloys with low-cost and high properties. This method can also be applied to synthesize other porous metallic biomaterials.

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