5439
The SLM-manufactured Al-Si-Mg-Ti/TiC material exhibited fine equiaxed-shaped α ( Al ) grains with nanoscale Si4Ti5 phases and Mg segregation along the grain boundaries .
 material: material; material: Al; concept or principle: grains; material: Mg; concept or principle: grain boundaries
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: material, Al, grains, Mg, grain boundaries 
Answer:
 material: material; material: Al; concept or principle: grains; material: Mg; concept or principle: grain boundaries