An interaction crack growth model for creep-brittle superalloys with high temperature dwell time
作者： Hongqin Yang , Rui Bao , Jiazhen Zhang
DOI: 10.1016/J.ENGFRACMECH.2014.04.006
关键词:
摘要: Abstract A three-term interaction crack growth model developed for creep-brittle materials is restudied. Derivation of cycle–time intensity factor from the Gaussian equation discussed. The model’s prediction ability was verified by test data a nickel base superalloy under 750 ° C with 25 s dwell time. Data two other superalloys namely Alloy 718 and Hastelloy® X literature are analyzed to further examine applicability model. Satisfactory results obtained. Parameter fitting procedure limitation discussed at end.
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