Metallurgical aspects of deformation processing

提案中更详细描述的研究课题总结如下。1。静态和元动态再结晶组合模型。将与澳大利亚同事M. Barnett和P.D. Hodgson联合开发一个涵盖这两种机制的单一模型。这将简化工业轧机轧制负荷的建模。2。静态和元动态再结晶动力学建模。在与博士合作。E. Poliak和A. Najafizadeh，将开发一种方法，允许在由于不完全再结晶而积累加工硬化时预测支架间软化的影响。3所示。变形奥氏体的变异选择。利用电子背散射衍射（EBSD）技术对形变奥氏体转变后出现的织构成分模型进行了改进。4所示。陨石的转化特征。陨石在穿越太阳系的过程中冷却得非常缓慢。将确定在这些条件下发生的相变的特征，以便解决在这些条件下适用的取向关系的一些问题。5。Al-Mg合金的粗晶超塑性。虽然超塑性通常与细晶材料有关，但在特定条件下，粗晶金属也可以产生超塑性。目前正在研究造成这种不寻常效果的机制，以期确定工业应用的可能性。6。镁合金物理冶金基础。镁合金的孪生和断裂行为在各种工业条件下进行了研究。特别重要的是变形过程中应变路径和温度的影响。

The research topics described in more detail in the proposal are summarized below. 1.  A Combined Model for Static and Metadynamic Recrystallization.  A single model covering both mechanisms will be developed in association with Australian colleagues M. Barnett and P.D. Hodgson.  This will simplify the modeling of rolling load in industrial mills. 2.  Modeling the Kinetics of Static and Metadynamic Recrystallization.  In collaboration with Drs. E. Poliak and A. Najafizadeh, an approach will be developed permitting the effect of interstand softening to be predicted when work hardening is being accumulated due to incomplete recrystallization. 3.  Variant Selection in Deformed Austenite.  A model that accounts for the texture components that appear after the transformation of deformed austenite is being improved by the use of EBSD (electron backscatter diffraction) techniques. 4.  Transformation Characteristics of Meteorites.  Meteorites cool very slowly during their passage through the solar system.  The characteristics of the phase transformation that takes place under these conditions will be determined so as to resolve some issues regarding the orientation relationships that apply under these conditions. 5.  Coarse-Grained Superplasticity in Al-Mg Alloys.  Although superplasticity is usually associated with fine-grained materials, it can also be produced in coarse-grained metals under particular conditions.  The mechanisms responsible for this unusual effect are being studied with a view to determining the possibility of industrial application. 6.  Fundamentals of the Physical Metallurgy of Magnesium Alloys.  The twinning and fracture behavior of Mg alloys is being studied under various conditions of industrial interest.  Of particular importance are the effects of strain path and temperature during forming operations.