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Results show that the microstructure of base metal ( BM ) is a typical basket-weave morphology that exhibits lamellar α within β matrix .
 concept or principle: microstructure; material: base metal; material: BM; concept or principle: basket-weave morphology; concept or principle: lamellar
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: base metal; material: BM; concept or principle: basket-weave morphology; concept or principle: lamellar