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Following tensile tests at room temperature , failure tended to occur in the fusion zone of the laser-welded joints and in the HAZ of the laser-additive-welded joints .
 process characterization: tensile tests; process parameter: temperature; concept or principle: failure; concept or principle: fusion zone; concept or principle: HAZ
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:
 process characterization: tensile tests; process parameter: temperature; concept or principle: failure; concept or principle: fusion zone; concept or principle: HAZ