SEM and EDX analysis of erosion products formed on steam turbine blade

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials at High Temperatures Pub Date : 2023-09-03 DOI:10.1080/09603409.2023.2264058

Pooja Rani, Atul Kumar Agrawal

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Abstract

ABSTRACTWater droplet erosion (WDE), which is brought on by the high-energy impact of liquid water droplets, is a serious problem for steam turbine blades. Nevertheless, rather than addressing the WDE of actual steam turbine blades, the majority of the published research on this issue uses laboratory test rigs. In this study, scanning electron microscopy and energy-dispersive X-ray analysis are used to examine how the surface of low-pressure steam turbine blades that had been in service eroded over time. The results of this study provide valuable insights into the microstructural features and elemental composition of X20Cr13 steel in steam turbine blades, as well as the factors that can contribute to damage and failure.KEYWORDS: LP turbine bladeX20Cr13fractographyerosion pitsScanning Electron Microscopy (SEM)Energy-Dispersive X-ray (EDX) AcknowledgmentsThe authors are grateful to Dr. M.K. Sharma, Technical Director: AEQUITAS VERITAS INDUSTRIAL SERVICES (AVIS) laboratory, for helping us in conducting the experiments and Mr. D.C. Nirmal, Sr. DGM (STE-BHEL Bhopal), Mr. Manoj Yadav, Manager (COE-BHEL BHOPAL) for technical guidance on steam turbines.Disclosure statementNo potential conflict of interest was reported by the author(s).

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汽轮机叶片冲蚀产物的SEM和EDX分析

摘要液态水水滴的高能冲击引起的水滴侵蚀是汽轮机叶片面临的一个严重问题。然而，大多数发表的研究并没有解决实际汽轮机叶片的WDE问题，而是使用实验室测试台。在这项研究中，使用扫描电子显微镜和能量色散x射线分析来研究低压汽轮机叶片表面随着时间的推移是如何被侵蚀的。本研究结果为了解汽轮机叶片X20Cr13钢的显微组织特征和元素组成，以及可能导致损坏和失效的因素提供了有价值的见解。作者感谢AEQUITAS VERITAS工业服务(AVIS)实验室技术总监M.K. Sharma博士帮助我们进行了实验，感谢Dr. dc Nirmal，高级DGM (st - bhel Bhopal)， Mr. Manoj Yadav，经理(COE-BHEL Bhopal)对汽轮机的技术指导。披露声明作者未报告潜在的利益冲突。

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来源期刊

Materials at High Temperatures 工程技术-材料科学：综合

CiteScore

1.90

自引率

15.40%

发文量

审稿时长

>12 weeks

期刊介绍： Materials at High Temperatures welcomes contributions relating to high temperature applications in the energy generation, aerospace, chemical and process industries. The effects of high temperatures and extreme environments on the corrosion and oxidation, fatigue, creep, strength and wear of metallic alloys, ceramics, intermetallics, and refractory and composite materials relative to these industries are covered. Papers on the modelling of behaviour and life prediction are also welcome, provided these are validated by experimental data and explicitly linked to actual or potential applications. Contributions addressing the needs of designers and engineers (e.g. standards and codes of practice) relative to the areas of interest of this journal also fall within the scope. The term ''high temperatures'' refers to the subsequent temperatures of application and not, for example, to those of processing itself. Materials at High Temperatures publishes regular thematic issues on topics of current interest. Proposals for issues are welcomed; please contact one of the Editors with details.