A microscopy study of nickel-based superalloys performance in type I hot corrosion conditions

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials at High Temperatures Pub Date : 2023-03-10 DOI:10.1080/09603409.2023.2188355

Manon Waeytens, A. Syed, Tracey Roberts, F. D. Martinez, S. Gray, J. Nicholls

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引用次数: 2

Abstract

ABSTRACT Alloy material selection for sustainable, efficient, and cost-effective use in components is a key requirement for both power generation and aerospace sectors. Superalloys are manufactured using a combination of different elements, selected carefully to balance mechanical performance and environmental resistance to be used in a variety of different service conditions. Therefore, a fundamental understanding of each element is critical to alloy design. In this paper, the interaction of alloy chemistry, particularly chromium as a corrosion-resistant element along with titanium and molybdenum, and their effect on alloys performance for the relevant gas turbine industries were discussed. Based on the findings, the single-crystal alloy is found to be a better corrosion resistant alloy exhibited higher corrosion resistance in comparison to polycrystal alloys and proved that microstructure has a significant impact on alloy performance. This study also established that molybdenum level in chromia former alloys can significantly enhance the corrosion damage.

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镍基高温合金在I型热腐蚀条件下性能的显微研究

选择可持续、高效、低成本的合金材料是发电和航空航天领域的关键要求。高温合金是使用不同元素的组合制造的，经过精心挑选，以平衡机械性能和环境阻力，以便在各种不同的使用条件下使用。因此，对每个元素的基本理解对合金设计至关重要。本文讨论了合金化学，特别是作为耐腐蚀元素的铬与钛、钼的相互作用，以及它们对相关燃气轮机行业合金性能的影响。结果表明，与多晶合金相比，单晶合金是一种更好的耐腐蚀合金，具有更高的耐腐蚀性能，并证明了微观组织对合金性能有显著影响。研究还表明，钼含量对原铬合金的腐蚀损伤有显著的促进作用。

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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.