The results show that the laser hardened overlay posseses high hardness and a little long contact fatigue persistance than that of hardened layer by high frequnce.
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并进行了硬度及接触疲劳试验.;试验结果表明:堆焊加激光强化层的硬度高;其接触疲劳性能比原材料高频淬火略有提高;
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