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The tensile properties of heat treated specimens containing of different proportions of weld zone were designed to evaluate the influence of weld zone on tensile properties of the alloy .
 machanical property: tensile properties; concept or principle: heat; concept or principle: weld zone; engineering feature: designed; concept or principle: weld zone; machanical property: tensile properties; material: alloy
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:
 machanical property: tensile properties; concept or principle: heat; concept or principle: weld zone; engineering feature: designed; concept or principle: weld zone; machanical property: tensile properties; material: alloy