许多工业用的金属材料,如低碳钢、低合金钢、钛合金等,均具有韧-脆转移的过程,对这一转移过程的本质及其影响因素的研究,一直受到极大的重视。 金属的韧-脆转移过程受材料的内部结构(成份、晶粒度、组织等)、外部形状(缺口、试样厚度等)、试验条件(温度、速率等)及环境因素(环境促进脆化)等因素的 Many industrial metal materials, such as low carbon steel, low alloy steel, titanium alloy and so on, all have the process of ductile-brittle transfer. The study on the nature of the transfer process and its influencing factors has drawn great attention. The ductile-brittle transfer process of metal is affected by the internal structure of the material (composition, grain size, texture, etc.), external shape (notch, thickness of specimen, etc.), test conditions ) And other factors