1067
The comparative effect of solid solution and precipitation strengthening on work hardening behaviour and fracture mode is discussed .
 material: solid solution; concept or principle: precipitation; manufacturing process: work hardening; concept or principle: fracture
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:
 material: solid solution; concept or principle: precipitation; manufacturing process: work hardening; concept or principle: fracture