نتایج جستجو برای: nickel based superalloy
تعداد نتایج: 2964286 فیلتر نتایج به سال:
Abstract In industrial gas turbine (IGT) engine manufacturing, nickel-based superalloys are used mainly to meet the needs of components hot pathway. Although these alloys have high-temperature capabilities, parts prone damage during service. The high working temperatures engines lead component degradation due creep, fatigue, and oxidation reactions; therefore, cost newly produced superalloy com...
Abstract The influence of keyhole TIG (K-TIG) welding parameters on the weld geometry and defects a new nickel-based superalloy VDM Alloy 780 alloy were investigated using statistical design experiment, microstructures heat-affected zone (HAZ) fusion (FZ) K-TIG-welded characterized. No cracks are found in FZ HAZ. Travel speed significantly influences minimum width (Wm), face root excess metal, ...
In turbine engines, high temperature components made of superalloys may crack in a creep process during service. With the inward flux of the gases, e.g. oxygen and nitrogen, along those cracks, the microstructure of the superalloy substrate nearby the cracks may degrade by internal oxidation and nitridation. The aim of this study is to investigate and simulate the oxidation-nitridation-induced ...
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