宏观偏析（macrosegregation）亦称为“区域偏析”，指金属铸锭（铸件）中各宏观区域化学成分不均匀的现象。包括正常偏析、反常偏析和比重偏析。宏观偏析造成铸锭（铸件）组织和性能的不均匀性。它和材料本性、浇铸条件、冷却条件等许多因素有关，虽然无法绝对避免，但应当控制在一定范围之内。
misc. gross segregation
基于田口方法的挤压铸造Al5Cu0.4Mn合金宏观偏析 - TNMSC 关键字: Al-Cu合金；挤压铸造；田口方法；宏观偏析[gap=1503]Key words: Al-Cu alloy; squeeze casting; Taguchi method; macrosegregation
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... macrography 宏观检验 macroscopic segregation 宏观偏析 macroscopic stress 宏观应力 ...
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... gross sectional area ==> 总断面面积,毛截面面积 gross segregation ==> 宏观偏析 gross shipping weight ==> 毛装运重量 ...
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With the increase of holding time, the hardness of quasi-K445 superalloy firstly increases then decreases, and the macrosegregation firstly alleviates then aggravates.
5.随保温时间的延长,类K445合金的硬度先升高后降低,宏观偏析程度先减小后增大。
参考来源 - 类K445镍基合金的制备及组织与性能研究The effect of electromagnetic fields on the solid solubility and macro-segregation of alloying elements, the microstructures and solidification structures of Al alloy were all studied. And the mechanism of solidification of Al alloy under magnetic fields was discussed.
包括电磁场作用下铝合金液相线、固相线的变化规律;电磁场对铝合金中溶质元素的固溶度、合金元素的宏观偏析的影响;以及电磁场作用下,铝合金的微观结构和凝固组织的改变,并探讨了铝合金在电磁场中凝固行为的作用机制。
参考来源 - 电磁场作用下铝合金凝固理论基础研究·2,447,543篇论文数据，部分数据来源于NoteExpress
同时分析了宏观偏析的形成及可能形成的位置。
The formation mechanism and potential position of macro-segregation are analyzed.
与其它合金一样，铸铁的偏析也分宏观偏析和微观偏析。
As that of other alloys, the segregation of the cast iron is also divided into macro-segregation and micro-segregation.
随凝固的进行，液相中的溶质不断富集，最终在铸坯的中心区域形成宏观偏析。
The macrosegregation is formed in central area of the billet resulted from the continuous enrichment of solute during solidification process.
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