1912
which all may influence the molten pool size , further solidification , microstructural grain growth and eventually the mechanical properties , lifetime and performance of LPBF parts .
 concept or principle: molten pool; concept or principle: solidification; concept or principle: microstructural; concept or principle: grain growth; concept or principle: mechanical properties; concept or principle: performance; manufacturing process: LPBF
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: molten pool; concept or principle: solidification; concept or principle: microstructural; concept or principle: grain growth; concept or principle: mechanical properties; concept or principle: performance; manufacturing process: LPBF