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This section reviews the metals that are commonly used in WAAM , with a particular emphasis on the microstructure and mechanical properties of the additively manufactured alloys .
 material: metals; manufacturing process: WAAM; concept or principle: microstructure; concept or principle: mechanical properties; manufacturing process: additively manufactured
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: metals; manufacturing process: WAAM; concept or principle: microstructure; concept or principle: mechanical properties; manufacturing process: additively manufactured