863
With reference to the Ti6Al4V alloy and manufacturing by electron beam melting , we perform systematic finite element modeling of one-pass scanning to study the effects of beam size , beam power density , beam scan speed , and chamber bed temperature on the magnitude and distribution of residual stresses .
 material: Ti6Al4V alloy; manufacturing process: manufacturing; manufacturing process: electron beam melting; concept or principle: finite element; concept or principle: scanning; machine or equipment: beam; machine or equipment: beam; machanical property: density; machine or equipment: beam; machine or equipment: bed; process parameter: magnitude; concept or principle: distribution; machanical property: residual stresses
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Ti6Al4V alloy, manufacturing, electron beam melting, finite element, scanning, beam, beam, density, beam, bed, magnitude, distribution, residual stresses 
Answer:
 material: Ti6Al4V alloy; manufacturing process: manufacturing; manufacturing process: electron beam melting; concept or principle: finite element; concept or principle: scanning; machine or equipment: beam; machine or equipment: beam; machanical property: density; machine or equipment: beam; machine or equipment: bed; process parameter: magnitude; concept or principle: distribution; machanical property: residual stresses