一、前言我厂D09型汽轮机的末叶片是2Cr13马氏体不锈钢,防水蚀采用TIG堆焊司太力合金。在叶片进汽边一侧堆焊(图1)司太力图1 末叶片结构示意图合金(铸态奥氏体组织),是典型的异种金属焊接。由于两种材料的线膨胀系数不同 First, the foreword The last blade of our factory D09 turbine is 2Cr13 martensitic stainless steel, waterproof corrosion using TIG welding department too force alloy. In the blade into the steam side welding (Figure 1) Secretary too force Figure 1 Schematic diagram of the final blade alloy (as-cast austenite), is a typical dissimilar metal welding. Due to the different linear expansion coefficients of the two materials