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This paper presents a procesB-microstructure finite element modeling framework for predicting the evolution of volumetric phase fractions and microhardness during laser directed energy deposition ( DED ) additive manufacturing of Ti6Al4V .
 concept or principle: finite element; concept or principle: framework; concept or principle: evolution; concept or principle: phase fractions; concept or principle: microhardness; manufacturing process: laser directed energy deposition; manufacturing process: DED; manufacturing process: additive manufacturing; material: Ti6Al4V
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: finite element, framework, evolution, phase fractions, microhardness, laser directed energy deposition, DED, additive manufacturing, Ti6Al4V 
Answer:
 concept or principle: finite element; concept or principle: framework; concept or principle: evolution; concept or principle: phase fractions; concept or principle: microhardness; manufacturing process: laser directed energy deposition; manufacturing process: DED; manufacturing process: additive manufacturing; material: Ti6Al4V