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AB-deposited microstructure consisted of martensite and ferrite , along with ( Fe , Cr ) 23C6 phase precipitated at α-Fe grain boundaries .
 concept or principle: microstructure; material: martensite; material: ferrite; material: Fe; material: Cr; concept or principle: phase; concept or principle: grain boundaries
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:
 concept or principle: microstructure; material: martensite; material: ferrite; material: Fe; material: Cr; concept or principle: phase; concept or principle: grain boundaries