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Strengthening of recycled DMLB-AlSi10Mg alloys manufactured in both directions was attributed to Orowan mechanism ( due to existence of Si precipitates ) , Hall-Petch effect ( due to eutectic cell walls ) , and dislocation hardening ( due to pre-existing dislocation networks ) .
 manufacturing process: Strengthening; concept or principle: recycled; material: alloys; concept or principle: mechanism; material: Si; material: precipitates; concept or principle: eutectic; application: cell; concept or principle: dislocation; concept or principle: dislocation
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: Strengthening, recycled, alloys, mechanism, Si, precipitates, eutectic, cell, dislocation, dislocation 
Answer:
 manufacturing process: Strengthening; concept or principle: recycled; material: alloys; concept or principle: mechanism; material: Si; material: precipitates; concept or principle: eutectic; application: cell; concept or principle: dislocation; concept or principle: dislocation