1383
3.1 Titanium alloys Titanium alloys have been widely studied for application of additive manufacturing in aerospace components due to their high strength-to-weight ratio and inherently high material cost .
 material: Titanium alloys; material: Titanium; material: alloys; manufacturing process: additive manufacturing; machine or equipment: aerospace components; material: material
Please list all entity words in the text that fit the category.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} 
Answer:
 material: Titanium alloys; material: Titanium; material: alloys; manufacturing process: additive manufacturing; machine or equipment: aerospace components; material: material