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分析了铸造镍基合金表面激光熔覆层热裂纹产生的原因和特点,探讨了传热变质剂对熔覆层结晶裂纹的抑制作用.
The causes and characteristics of the hot cracking on the surface of the cast Ni-based alloy were analyzed. The inhibition of the heat transfer modifier on the crystal cracks of the cladding layer was also discussed.