随着现代科学技术的迅猛发展 ,汽车日益向高速化、轻量化发展 ,作为汽车用弹簧钢也开发了各种高应力弹簧钢。但是 ,悬挂弹簧的高应力化往往又会带来在腐蚀环境下使用时发生以点蚀为起点的疲劳破坏 ,以及对于氢脆破裂敏感性的提高。特别是在寒冷地区使用的汽车用悬挂弹簧 ,在冬 With the rapid development of modern science and technology, automobiles are increasingly becoming more and more lightweight. As a spring steel for automobiles, various types of high-stress spring steel have also been developed. However, the high stress of suspension springs often results in fatigue damage starting from pitting corrosion when used in a corrosive environment and an increase in susceptibility to hydrogen embrittlement. Especially in the cold areas of the use of suspension springs for cars, in winter