841
Microstructural studies demonstrate that FSW is capable of changing Si phase morphologies ( i.e .
 concept or principle: Microstructural; manufacturing process: FSW; material: Si; concept or principle: phase morphologies
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: Microstructural; manufacturing process: FSW; material: Si; concept or principle: phase morphologies