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研究低钴（ＹＧ８）硬质合金激光相变硬化的结果表明：合理选择激光淬火工艺参数及表面涂黑状况等，可使合金力学性能有较明显的提高，并对激光处理的合金组织结构与性能的改变的机理作了讨论与分析。
The research on the laser phase transformation hardening of low cobalt (YG8) cemented carbide shows that the mechanical properties of the alloy can be obviously improved by reasonably choosing the parameters of laser quenching and the surface blackening. The effects of laser treatment on the microstructures and properties of the alloy The mechanism of the change of performance is discussed and analyzed.