In order to reduce the brittle fracture in the boride layers, the effects of the annealing on the electroboronized samples have been studied. In the annealing of the boride layers at 800℃, the distribution of the microhardness does not change, and the Fe₂B layer does not change, too. But the compressive residual stress is reduced greatly. In the annealing of the boride layers above 850℃, the distribution of the microhardness becomes more smooth, in the boride layers the Fe₂B layer increase, the compressive residual stress is reduced greatly, too. |
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