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The tensile test shows that the strength of CS Ti6Al4V alloys can be largely improved by the enhanced diffusion and resultant metallurgical bonding .
 tensile test, strength, Ti6Al4V alloys, be, diffusion, metallurgical bonding
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 tensile test, strength, Ti6Al4V alloys, be, diffusion, metallurgical bonding