为了改变传统螺旋弹簧的无阻尼现状，采用Fe-Mn合金研制了一种具有良好阻尼特性的螺旋弹簧。首先，研究了用于制作螺旋弹簧的Fe-Mn合金材料的最佳工艺参数。然后，制备了Fe-Mn合金螺旋弹簧，并采用优化的工艺参数对其进行处理，以实现高阻尼特性。最后，通过螺旋弹簧的功能原理和解析模型，进一步研究了Fe-Mn合金螺旋弹簧的阻尼性能。结果表明，在相同的外部激励条件下，与65Mn螺旋弹簧相比，Fe-Mn合金螺旋弹簧表现出显著的耗能效果。在一定的加载位移下，Fe-Mn合金螺旋弹簧的损耗因子随位移的增加呈非线性指数增长，而其等效刚度随位移的增加呈线性下降，表现出明显的软化特性。特别地，当Fe-Mn合金螺旋弹簧的等效应变幅小于0.3%时，可以利用其扭转应变能预测其耗能特性，为弹簧设计提供理论依据。该研究为减隔振产品的开发和应用提供了新的方向。

In order to change the undamped state of traditional helical spring, a helical spring with improved damping characteristics is developed by using Fe-Mn alloy. Firstly, the optimum process parameters of Fe-Mn alloy material for making helical spring is studied. Then, the Fe-Mn alloy helical spring is prepared and processed with optimized parameters to achieve high damping properties. Finally, the damping properties of Fe-Mn alloy helical spring is studied through the functional principle and analytical model of the helical spring. The results show that the Fe-Mn alloy helical spring exhibits a significant energy dissipation effect compared with the 65Mn helical spring under the same external excitation conditions. At a certain loading displacement, the loss factor of Fe-Mn alloy helical spring increases exponentially with the increase of displacement, while its equivalent stiffness decreases linearly, exhibiting pronounced softening characteristics. Specifically, when the equivalent strain amplitude of Fe-Mn alloy helical spring is less than 0.3%, its energy dissipation can be predicted using its torsional strain energy, providing a theoretical basis for spring design. This study provides a new direction for the development and application of vibration isolation products.