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Characterization of alloy 718 subjected to different thermomechanical treatments

机译:经受不同热机械处理的718合金的特性

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摘要

Chemical phase and microstructural investigations of alloy 718 solution-annealed and age-hardened were performed in this study. Focus was made in the effects of solution annealing temperature, aging temperature and holding time, and the amount of intermediate cold work on the alloy. The formation of secondary phases such as γ'-phase, γ"-pbase, and 8-phase, grain sizes, and any deformations of the microstructure with respect to the processed conditions have been studied. Statistics such as size and number densities of these precipitates with respect to the processing conditions were evaluated and a discussion on optimum conditions in obtaining finer and higher density of γ'- and y"-pbase precipitates is also presented.
机译:在这项研究中,对718合金进行了退火和时效硬化处理,进行了化学相和显微组织研究。着重研究了固溶退火温度,时效温度和保持时间以及对合金的中间冷加工量的影响。研究了γ'相,γ“ -pbase和8相等次生相的形成,晶粒尺寸以及相对于加工条件的显微组织的任何变形,并统计了它们的尺寸和数量密度评估了相对于加工条件的析出物,并讨论了获得更细和更高密度的γ'-和y“ -pbase析出物的最佳条件的讨论。

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