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The results show that the aB-deposited part was featured by periodic martensite laths within the block-shaped ferrite matrix in the inner layers , followed by epitaxial ferrite grains containing ultra-fine acicular martensite in the top layer only .
 material: martensite; material: ferrite; machanical property: epitaxial; concept or principle: grains; material: martensite; process parameter: layer
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: martensite; material: ferrite; machanical property: epitaxial; concept or principle: grains; material: martensite; process parameter: layer