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近年来单晶技术的发展解决了镍基高温合金晶界强化问题,使镍基高温合金具有优良的综合性能。合金的高温性能除取决于合金成份和工艺外,还必需进行适宜的热处理。对于新型单晶合金应选择合适的固溶温度,尽可能使铸态粗化γ′,相固溶而使显微组织均匀化,以便时效时能保证析出大量均匀弥散的γ′,相(二次γ′),这种弥散γ′相能提供在一定γ′体积百分数下的最佳蠕变抗力。为了研究不同固溶温度对NASAIR—100合金的组织和性能的影
In recent years, the development of single crystal technology to solve the grain boundary strengthening of nickel-based superalloy, nickel-based superalloy has excellent overall performance. In addition to the alloy’s high temperature performance depends on the alloy composition and process, but also the need for appropriate heat treatment. For the new type of single crystal alloy should choose a suitable solution temperature, as far as possible, the as-cast austenite γ ’phase solid solution and the microstructure homogenization, so aging can ensure the precipitation of large amounts of uniform dispersion of γ’, phase Γ ’), this dispersed γ’ phase can provide the best creep resistance at a certain γ ’volume fraction. In order to study the different solution temperature on the microstructure and properties of NASAIR-100 alloy