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The inhomogeneous microstructures and corresponding mechanical property differences of Inconel 718 fabricated by HDR-LDED along the deposition direction suggest the necessity to conduct further research of the post heat treatment in the future .
 material: microstructures; concept or principle: mechanical property; material: Inconel 718; concept or principle: fabricated; process parameter: deposition direction; concept or principle: research; manufacturing process: heat treatment
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: microstructures, mechanical property, Inconel 718, fabricated, deposition direction, research, heat treatment 
Answer:
 material: microstructures; concept or principle: mechanical property; material: Inconel 718; concept or principle: fabricated; process parameter: deposition direction; concept or principle: research; manufacturing process: heat treatment