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首页> 外文期刊>Journal of Materials Engineering and Performance >Influence of Laser Power on the Hardening of Ti6Al4V Low-Pressure Steam Turbine Blade Material for Enhancing Water Droplet Erosion Resistance
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Influence of Laser Power on the Hardening of Ti6Al4V Low-Pressure Steam Turbine Blade Material for Enhancing Water Droplet Erosion Resistance

机译：激光功率对Ti6Al4V低压汽轮机叶片材料增强水滴抗冲蚀性能的影响

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摘要

To overcome water droplet erosion of Ti6Al4V alloy blade material used in low-pressure steam turbine (LPST) of high-rating nuclear and super critical thermal power plants, high-power diode laser (HPDL) surface treatment at two temperatures corresponding to two different power levels was carried out. During incubation as well as under prolonged erosion testing, the HPDL surface treatment of this alloy has enhanced its resistance significantly. This is due to the formation of fine-grained martensitic (ά) phase due to rapid heating and cooling associated with laser treatment. The droplet erosion test results after HPDL surface treatment on this alloy, SEM, XRD analysis, and residual stresses developed due to HPDL surface treatment are given in this paper.
机译：为了克服用于高等级核电厂和超临界热电厂的低压蒸汽轮机（LPST）的Ti6Al4V合金叶片材料的水滴腐蚀，在对应于两种不同功率的两种温度下进行大功率二极管激光（HPDL）表面处理水平进行。在孵育以及长时间的腐蚀测试中，该合金的HPDL表面处理显着提高了其抵抗力。这是由于与激光处理相关的快速加热和冷却导致形成了细晶粒的马氏体相。本文给出了在该合金上进行HPDL表面处理后的熔滴腐蚀测试结果，SEM，XRD分析以及由于HPDL表面处理而产生的残余应力。

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