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Despite poor tensile performance , the technique proposed was shown to successively age Alloy 718 ( increase precipitate size and hardness ) without removing the sample from the process chamber , which can reduce the number of process steps in producing a part .
 machanical property: tensile; concept or principle: performance; material: Alloy; material: precipitate; machanical property: hardness; concept or principle: sample; concept or principle: process; concept or principle: process
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: tensile, performance, Alloy, precipitate, hardness, sample, process, process 
Answer:
 machanical property: tensile; concept or principle: performance; material: Alloy; material: precipitate; machanical property: hardness; concept or principle: sample; concept or principle: process; concept or principle: process