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An epitaxial growth of grains with discrete direction is also observed along the build direction owing to thermal gradient , commonly seen in additively manufactured titanium alloy components .
 machanical property: epitaxial; concept or principle: grains; process parameter: build direction; process parameter: thermal gradient; manufacturing process: additively manufactured; material: alloy
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:
 machanical property: epitaxial; concept or principle: grains; process parameter: build direction; process parameter: thermal gradient; manufacturing process: additively manufactured; material: alloy