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Solute segregation during solidification can lead to the formation of non-equilibrium phases that are stable at compositions far from the nominal composition of the melt , leading to crack formation .
 concept or principle: segregation; concept or principle: solidification; material: lead; concept or principle: composition; concept or principle: melt
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: segregation; concept or principle: solidification; material: lead; concept or principle: composition; concept or principle: melt