Thermomechanical treatment of a twin-roll cast, LPSO-containing WZ73 magnesium alloy for tailor-made structure and property adjustment

在文献中，镁合金Mg97Zn1Y2 (at。-%)在可实现的力学性能、成形性和织构发展方面进行了研究和表征。金属间LPSO相出现在该合金中导致性能剖面的改善。进一步的研究表明，制造工艺影响了相的形态和相关的沉淀动力学。资源节约型双辊铸造工艺是国内外研究的热点。在新材料技术的应用和相关工艺管理方面有很多研究工作，但稀土镁合金迄今为止很少受到关注。因此，关于双辊铸造含lpso镁合金的悬而未决的问题可以制定。为了更好地理解和区分以往的结果和研究工作，将这些总结如下：-含Mg97Zn1Y2 （at）的lpso的行为。-%)对铸态和变形态的成形性和织构发展进行了研究，但到目前为止还没有对双辊铸态进行研究。-基于双辊铸造条件，目前尚不清楚通过热处理步骤，LPSO相是如何在该合金系统中析出动力学和相关形态发展的。-此外，根据双辊铸造和热处理初始状态，重要的是要研究在成形过程中哪些机制可以被激活，哪些织构发展与之相关。所得结果为控制双铸轧镁合金Mg97Zn1Y2 （at）中LPSO相的动力学提供了可能。-%)，这样就可以得出适合该应用的热处理方法。这伴随着对沉淀和转变机制以及由此产生的织构的评估。

In the literature, the Mg alloy Mg97Zn1Y2 (at .-%) has been investigated and characterized with regard to the achievable mechanical properties, formability and texture development. The intermetallic LPSO phases occurring in this alloy result in an improved property profile. Further studies show that the manufacturing process influences the morphology and the associated precipitation kinetics of the phases. The resource-efficient process of twin-roll casting is the focus of research work at national and international level. There isresearch work on the use of new material technologies and the associated process management, but Mg alloys with rare earths have so far received little attention. Open questions about twin-roll cast LPSO-containing Mg alloys can thus be formulated. These are summarized below for a better understanding and to distinguish from previous results and research work: - The behavior of the LPSOcontaining Mg alloy Mg97Zn1Y2 (at .-%) was investigated for the cast and deformed state with regard to formability and texturedevelopment, but so far not in the twin-roll cast state. - Based on the twin-roll cast condition, it is unclear how the LPSO phases develop in this alloy system through heat treatment steps with regard to the precipitation kinetics and the associated morphology. - In addition, depending on the twin-roll cast and heat-treated initial condition, it isimportant to investigate which mechanisms can be activated during forming and which texture development is associated with it. The results obtained should make it possible to control the kinetics of LPSO phases in a twin roll cast Mg alloy Mg97Zn1Y2 (at .-%) in such a way that a thermomechanical treatment suitable for the application can be derived. This is accompanied by an assessment of the precipitation and transformation mechanisms and the resulting texture.