结果表明，激光表面钴合金化可获得含钴均匀的合金化层，高温硬度和热疲劳性能均有提高。
The results show that the high temperature hardness and the heat fatigue performance of alloying layer are improved.
H13 热作模具钢表面经激光熔覆钴基合金后显著提高了模具的高温硬度和热疲劳抗力。
With laser cladding Co-base alloy coatings, the high temperature hardness and thermal fatigue resistance of H13 hot-working die surface were appreciably increased.
热硬度，即材料由于存在于切削区的高温而升温时仍能保持其硬度的能力。
Hot hardness, which is the ability of the material to retain its hardness at elevated temperatures in view of the high temperatures existing in the cutting zone.
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