试验结果表明该设备可以满足超声表面晶粒细化冲击的要求。
The results show that the instrument can reach the demand of ultrasonic peening grain refinement.
选用K 18合金和纯金属镍及不同的面层细化料，通过实验对比研究了镍基高温合金叶片表面晶粒细化机理。
Surface grain refinement of turbine blades in Ni based superalloy K18 were studied by comparison of experimental results in different alloys and mold surface materials.
结果表明，在反向凝固中，锡可以分布于试样的表面，细化晶粒，提高试样的硬度，同时使电阻率升高。
The result show that tin is distributed on the surface of the sample made by reversing solidification, and the grain is fined, the hardness and resistivity are increased.
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