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These techniques are applied to two metal powders composed of a specific alloy of titanium with aluminum and vanadium , denoted as Ti64 , which is in common use as a powder for selective laser or electron beam melting powder bed additive manufacturing .
 material: metal powders; material: alloy; material: titanium; material: aluminum; material: vanadium; material: as; material: as; material: powder; manufacturing process: selective laser; manufacturing process: electron beam melting; machine or equipment: bed; manufacturing process: additive manufacturing
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: metal powders, alloy, titanium, aluminum, vanadium, as, as, powder, selective laser, electron beam melting, bed, additive manufacturing 
Answer:
 material: metal powders; material: alloy; material: titanium; material: aluminum; material: vanadium; material: as; material: as; material: powder; manufacturing process: selective laser; manufacturing process: electron beam melting; machine or equipment: bed; manufacturing process: additive manufacturing