一、前 言 高温合金是一种能在高温下保持优良的物理和机械性能的材料,尤其是铸造高温合金直接用来生产航空发动机的高温热部件——导向叶片和涡轮叶片。它的质量好坏关系到发动机的寿命和安全,因此控制这些热部件的质量已引起国内外生产单位和冶金工作者的普遍重视。对生产这些热部件的母合金料锭质量的检 I. INTRODUCTION Superalloy is a material that retains excellent physical and mechanical properties at high temperatures. In particular, superalloys are used directly to produce high-temperature hot components of aero engines - vanes and turbine blades. Its quality is related to the life and safety of the engine. Therefore, controlling the quality of these hot parts has drawn universal attention from domestic and foreign production units and metallurgical workers. Inspection of the quality of master alloy ingot producing these hot components