کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1570903 | 1514383 | 2015 | 5 صفحه PDF | دانلود رایگان |
• Creep behaviors of alloys with different amounts of carbon were investigated.
• The creep rupture lives increased and later decreased with more carbon.
• Second-phase particles were responsible for the different creep behaviors.
Different amounts of carbon were added to a single-crystal nickel-based superalloy. The microstructural evolution of these alloys before and after high-temperature creep tests was investigated by employing scanning electron microscopy and transmission electron microscopy. Upon increasing the carbon contents, the volume fraction and diameter of the carbides increased gradually: however, the creep lives of the alloys increased slightly at first and subsequently decreased. The formation of second-phase particles, such as the nano-sized M23C6, blocky and needle-shaped μ phase, was observed in the creep samples, which was closely related to the high-temperature creep behaviors.
Journal: Materials Characterization - Volume 104, June 2015, Pages 81–85