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However , due to the interlock feature of grain boundaries in AM processed IN738LC , the grain structure retains its integrity after deformation .
 engineering feature: feature; concept or principle: grain boundaries; manufacturing process: AM; material: IN738LC; concept or principle: grain structure; concept or principle: integrity; concept or principle: deformation
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:
 engineering feature: feature; concept or principle: grain boundaries; manufacturing process: AM; material: IN738LC; concept or principle: grain structure; concept or principle: integrity; concept or principle: deformation