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低合金高强度钢的动态断裂韧性在一定条件下受控于温度和加载速率的变化，降低温度和提高加载速率都会使钢的动态断裂韧性降低。通过热激活分析，可以获得定量描述动态断裂韧性、温度及加载速率之间的关系。
Under certain conditions, the dynamic fracture toughness of low alloy high strength steel is controlled by the change of temperature and loading rate. Decreasing the temperature and increasing the loading rate will decrease the dynamic fracture toughness of the steel. The relationship between dynamic fracture toughness, temperature, and loading rate can be quantitatively described by thermal activation analysis.