5654
The microstructure after SLM densification shows a fine , equiaxed cellular-dendritic subgrain structure , superimposed by lath- or needle-like martensite .
 microstructure, SLM, densification, structure, martensite
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 microstructure, SLM, densification, structure, martensite