912
The microstructure of the weld sample shows the presence of fine equiaxed α grains with irregular β phase .
 concept or principle: microstructure; engineering feature: weld; concept or principle: sample; concept or principle: grains; concept or principle: phase
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; engineering feature: weld; concept or principle: sample; concept or principle: grains; concept or principle: phase