5759
A complex interaction between transient thermal history and the build-up of residual stress has been observed in the two laser scan strategies investigated .
 transient, residual stress, laser scan
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:
 transient, residual stress, laser scan