690
Over the range of processing parameters , microstructural features were mostly identical , consisting of a predominantly cellular solidification structure of martensite and 19.8 % –25.9 % of retained austenite .
 range, parameters, microstructural, solidification, martensite, retained austenite
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:
 range, parameters, microstructural, solidification, martensite, retained austenite