前言 一次弯曲冲击试验是检查金属材料脆性的有效方法之一。但是,由于冲击韧性α_κ没有明确的物理意义,它不能真实地、确切地反映材料的韧脆性,因此成为深入分析和研究脆性问题一大障碍。为了解决这个问题早已有人提出应用冲击示波方法将冲击 Foreword A flexural impact test is one of the most effective methods for checking the brittleness of metallic materials. However, as the impact toughness α_κ has no definite physical meaning, it can not truly and accurately reflect the ductile and brittleness of the material, and therefore becomes a major obstacle to further analyzing and studying the brittleness problem. In order to solve this problem, it has long been suggested that the application of shock wave method will impact