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Correspondingly , the friction stir welding process results in significant reduction of tensile strength , while ductility is strongly improved .
 manufacturing process: friction stir welding; concept or principle: reduction; machanical property: tensile strength; machanical property: ductility
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:
 manufacturing process: friction stir welding; concept or principle: reduction; machanical property: tensile strength; machanical property: ductility