1437
Among all WAAM engineering materials , bimetal components exhibit high levels of residual stress and deformation due to the material thermal expansion difference .
 manufacturing process: WAAM; material: engineering materials; machine or equipment: bimetal components; machanical property: residual stress; concept or principle: deformation; material: material
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: 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:
 manufacturing process: WAAM; material: engineering materials; machine or equipment: bimetal components; machanical property: residual stress; concept or principle: deformation; material: material