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<p>In this paper, a novel hybrid forging process is proposed for block materials with high specific strength based on the traditional forging process. A prestressing system is established first by clamping the forging using a hydraulic press process in the hybrid process, then rapidly impacting the system using hammer impact process in order to activate and amplify the prestressing force. To achieve the novel hybrid process, integrated equipment is designed based on the structure characteristics of both the press and the hammer, its dynamic characterization is analyzed through simulations to obtain the results of multi-objective optimization. In this study, effectiveness of the novel hybrid forging process by forging Ti-6Al-4V alloy is first reported. Experimental results show that the plastic deformation of the forgings can increase by up to about 3 % and energy loss of equipment elastic deformation can reduce about 25.8 % in the hybrid process, compared to the single hydraulic press process. In particular, microstructure of forgings occurs finer grain size and higher and more uniformly distributed dislocation density. This study reveals the potential of the novel hybrid forging process technology, which lays a solid foundation for expanding its application in forging industrial production about high specific strength material.</p>

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Dynamic design and application on Ti-6Al-4V of novel hybrid forging system

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Xiurong Fang,
  • Hailun Liu,
  • Junyi Liu,
  • Hongwei Li,
  • Fuqiang Yang

摘要

In this paper, a novel hybrid forging process is proposed for block materials with high specific strength based on the traditional forging process. A prestressing system is established first by clamping the forging using a hydraulic press process in the hybrid process, then rapidly impacting the system using hammer impact process in order to activate and amplify the prestressing force. To achieve the novel hybrid process, integrated equipment is designed based on the structure characteristics of both the press and the hammer, its dynamic characterization is analyzed through simulations to obtain the results of multi-objective optimization. In this study, effectiveness of the novel hybrid forging process by forging Ti-6Al-4V alloy is first reported. Experimental results show that the plastic deformation of the forgings can increase by up to about 3 % and energy loss of equipment elastic deformation can reduce about 25.8 % in the hybrid process, compared to the single hydraulic press process. In particular, microstructure of forgings occurs finer grain size and higher and more uniformly distributed dislocation density. This study reveals the potential of the novel hybrid forging process technology, which lays a solid foundation for expanding its application in forging industrial production about high specific strength material.