6855
The uncovered synergy of various deformation modes and the underlying back stress strengthening induced by heterogeneous microstructures contribute to the high ultimate tensile strength and good ductility of the aB-built AlCrCuFeNi3.0 HEA .
 deformation, stress, strengthening, heterogeneous, ultimate tensile strength, ductility
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:
 deformation, stress, strengthening, heterogeneous, ultimate tensile strength, ductility