High temperature oxidation of Ni-based superalloy 247 produced by electron beam powder bed fusion additive manufacturing

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-09-05 DOI:10.1016/j.corsci.2025.113301

Karthikeyan Hariharan , Michael Landes , Markus Ramsperger , Oswaldo Luengas , Taiwu Yu , Erdmann Spiecker , Christopher H. Zenk , Yunzhi Wang , Sannakaisa Virtanen

引用次数: 0

Abstract

This study investigates high temperature oxidation of Ni-base superalloy 247 processed by electron beam powder bed fusion (PBF-EB) compared with a conventionally cast (CC) counterpart. In terms of mass-gain during isothermal thermogravimetry at 1100 °C, the CC alloy outperformed the PBF-EB alloy. However, the PBF-EB alloy suffers from deeper internal oxidation due to its fine grain structure while shortening the transient oxidation stage. On the other hand, the CC alloy forms a non-homogeneous scale due to inhomogeneous distribution of bulky carbides and takes longer time to transition towards a steady-stage oxidation. The findings are analyzed and rationalized in the context of prior literature and thermodynamic-kinetic modeling.

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电子束粉末床熔融增材制造ni基高温合金247的高温氧化研究

研究了采用电子束粉末床熔合（PBF-EB）处理的ni基高温合金247的高温氧化性能，并与常规铸造（CC）合金进行了比较。在1100 ℃的等温热重测量中，CC合金的质量增益优于PBF-EB合金。然而，由于PBF-EB合金具有细小的晶粒结构，其瞬态氧化阶段缩短，内部氧化程度加深。另一方面，由于大块碳化物的不均匀分布，CC合金形成了不均匀的垢，需要更长的时间才能过渡到稳定的氧化阶段。在先前的文献和热力学-动力学模型的背景下，分析和合理化了这些发现。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.