The invention provides a
selective laser melting forming method for preparing a
titanium alloy component. The method comprises the steps as follows: firstly, after being subjected to ball-milling and mixing,
titanium alloy powder is delivered to a
selective laser melting quick forming device, and the
titanium alloy component is formed according to a component CAD image imported into the
selective laser melting quick forming device; secondly, during a forming process, a mixture of 35-45% of
nitrogen and 55-65% of
argon is input by the flow rate of 3-5
liter per minute at the same time, a self-propagating high-temperature synthetic reaction is performed on the titanium and the
nitrogen under the temperature
ranging from 1220 DEG C to 1480 DEG C so as to generate
titanium nitride, and
titanium carbide is generated through the reaction of the titanium and the carbon in
graphite under the temperature
ranging from 1260 DEG C to 1523 DEG C under the
argon condition; thirdly, the
titanium nitride and the
titanium carbide generated from the reactions are melted with the
titanium alloy component as an organic whole; fourthly, the formed
titanium alloy component is subjected to segmental cooling. Through adopting the technical scheme of the method, the generated
titanium alloy component has better
abrasive resistance and
corrosion resistance, and besides, the fact that the film
layers of the traditional
titanium nitride and
titanium carbide composite coatings are easy to peel off from the titanium alloy is avoided, and the surface of the titanium alloy is not needed to be subjected to
coating and anticorrosive treatment additionally, so that the cost is saved, and no other additional
processing procedures are required.