2942
In addition , the ε grains act as secondary hardening factor in the samples consisting of dual γ/ε phase , leading to a non-uniform deformation behavior .
 grains, as, hardening, samples, phase, deformation
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:
 grains, as, hardening, samples, phase, deformation