无模旋压成形微观组织演化研究现状
Research status of microstructure evolution on die-less spinning forming
随着航空航天领域的发展及科技的进步,无模旋压应用的领域越来越广泛,其无需芯模支撑即可通过旋压的方法获取预成形工件,达到效率高、耗材少的目的。然而,缺少芯模支撑会导致原始坯料在成形过程中的金属流动方向和速度难以确定。对成形工件的微观结构进行研究可以反映宏观上的金属流动及塑性形变,也可以深度揭示旋压成形方法的相关机理。目前,关于无模旋压成形微观组织演化的研究尚少,对其进行总结概述,根据其微观特征分析旋压参数对成形精度的影响;通过微观结构的晶粒取向与晶粒尺寸对旋压工艺过程中金属流动进行细致分析;根据旋压工件的微观结构特点对其力学性能进行研究,有助于揭示旋压工艺的成形机理。
With the development of the aerospace field and advancement of science and technology,the application field of die-less spinning is becoming more and more extensive.Pre-formed workpieces can be obtained by spinning without a mandrel support,which can really achieve the purpose of high efficiency and low consumables.However,the lack of mandrel support makes it difficult to determine the direction and speed of metal flow of the original blank during forming process.The study of the formed workpiece microstructure can reflect the metal flow and plastic deformation on the macroscopic level,and it can also deeply reveal the related mechanism of the spin forming method.So far,there are few studies on the evolution of the microstructure of die-less spinning forming,which is summarized in this paper.According to the microanalysis of the influence of the spinning parameters on the forming accuracy; through the microstructure of the grain orientation and grain size of the spinning process to carry out a detailed analysis of the metal flow; according to the microstructural characteristics of the spinning workpiece can be the study of the mechanical properties,which helps to reveal the spinning process.The study of the mechanical properties of the spinning workpiece can help to reveal the forming mechanism of the spinning process.
无模旋压 / 微观组织演化 / 晶粒 / 金属流动 / 成形精度
spinning die-less forming / microstructure evolution / grain / metal flow / forming accuracy
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