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The results of the study of the influence of linear energy , rigid fixation of parts during welding and heat treatment on microhardness , welding deformation and the microstructure of the welded joint are presented .
 manufacturing process: welding; manufacturing process: heat treatment; concept or principle: microhardness; manufacturing process: welding; concept or principle: deformation; concept or principle: microstructure; engineering feature: welded joint
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: welding; manufacturing process: heat treatment; concept or principle: microhardness; manufacturing process: welding; concept or principle: deformation; concept or principle: microstructure; engineering feature: welded joint