843
The stir zone of the welded joint shows significantly lower micro-hardness in comparison to the aB-built SLM samples .
 engineering feature: welded joint; manufacturing process: SLM; concept or principle: samples
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:
 engineering feature: welded joint; manufacturing process: SLM; concept or principle: samples