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首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Parameters on Inhomogeneous Deformation and Damage in Isothermal Local Loading Forming of Ti-Alloy Component
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Effects of Parameters on Inhomogeneous Deformation and Damage in Isothermal Local Loading Forming of Ti-Alloy Component

机译：参数对钛合金零件等温局部加载成形中非均匀变形和损伤的影响

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摘要

Isothermal local loading (ILL) forming technology provides a new way to form largescale rib-web (LSRW) components of Ti-alloy, widely used in the aero-space fields as key load-bearing structures. However, the metal undergoes complex plastic inhomogeneous deformation and microstructural evolution, this will lead to macroscopical forming defects and further damage due to multi-process parameters and local loading method, making the process and forming quality hard to control. Using numerical simulation, combined with experiment, influences of various process parameters on forming process, inhomogeneous deformation and damage have been explored for ILL of LSRW components, such as the types of die-forging mode, frictional conditions, and local loading parameters (partitioning of the loading zone, constraint conditions, and loading pass). Then the reasonable forming conditions for LSRW components of Ti-alloy to be studied are proposed. The practical forming experiment of TA15 LSRW component was achieved successfully and the forging with good forming quality, excellent microstructure, and comprehensive mechanical properties was obtained, which indicates the reliability and practical value of results obtained in this article.
机译：等温局部加载（ILL）成型技术为形成钛合金的大型肋腹板（LSRW）组件提供了一种新方法，该合金广泛用于航空航天领域中作为关键的承重结构。但是，金属会经历复杂的塑性不均匀变形和微观结构演变，这将导致宏观成形缺陷，并且由于多工艺参数和局部加载方法而导致进一步损坏，从而使工艺和成形质量难以控制。通过数值模拟并结合实验，探索了LSRW组件的ILL的各种工艺参数对成形过程，不均匀变形和损坏的影响，例如模锻模式的类型，摩擦条件和局部载荷参数（加载区域，约束条件和加载过程）。并提出了研究钛合金低烟无卤成分的合理成形条件。成功完成了TA15 LSRW零件的实用成形实验，获得了成形质量好，组织优良，综合力学性能优良的锻件，表明了所得结果的可靠性和实用价值。

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