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首页> 外文期刊>Journal of Materials Engineering and Performance >High Power Diode Laser Surface Treatment to Minimize Droplet Erosion of Low Pressure Steam Turbine Moving Blades
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High Power Diode Laser Surface Treatment to Minimize Droplet Erosion of Low Pressure Steam Turbine Moving Blades

机译：大功率二极管激光表面处理可最大程度地降低低压蒸汽轮机移动叶片的液滴侵蚀

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This article deals with the high power diode laser (HPDL) surface treatment to overcome water droplet erosion of Low Pressure Steam Turbine (LPST) moving blades used in high rating conventional, critical and super critical thermal power plants. The materials generally used in these steam turbines are titanium alloy (Ti6A14V), precipitate hardened stainless steel (17Cr-4Ni PH), X20Cr13 and X10CrNiMoV1222 steels. During incubation period as well as under prolonged testing, the HPDL surface treatment of these materials except for 17Cr-4Ni PH steel has enhanced the droplet erosion resistance significantly. This is due to increased hardness and formation of fine-grained martensitic phase due to rapid heating and cooling rates associated with laser treatment. The droplet erosion results of HPDL laser surface treatment of all these materials and their analysis form the main part of the article.
机译：本文涉及高功率二极管激光器（HPDL）的表面处理，以克服用于高等级常规，临界和超临界热电厂的低压蒸汽轮机（LPST）移动叶片的水滴腐蚀。这些蒸汽轮机中通常使用的材料是钛合金（Ti6A14V），沉淀硬化不锈钢（17Cr-4Ni PH），X20Cr13和X10CrNiMoV1222钢。在孵育期间以及长时间的测试中，除了17Cr-4Ni PH钢以外，这些材料的HPDL表面处理均显着提高了抗滴蚀性。这是由于与激光处理有关的快速加热和冷却速率，导致硬度增加和形成了细晶粒的马氏体相。所有这些材料的HPDL激光表面处理的液滴腐蚀结果及其分析是本文的主要部分。

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