Thermal stability and oxidation behavior of nanostructured Ni-Al alloys with a high fraction of low angle grain boundaries

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

Corrosion Science Pub Date : 2025-03-18 DOI:10.1016/j.corsci.2025.112871

Y.C. Xin, W. Xu, W. Wang, B. Zhang

引用次数: 0

Abstract

Conventional nanocrystalline dominated by high angle grain boundaries (HAGBs) possesses excellent oxidation resistance in air but poor thermal stability. Low angle grain boundaries (LAGBs) can improve its thermal stability, but effect on oxidation behavior is unclear. In this work, a nanolaminated Ni-7 wt% Al alloy with grain size of 56 nm and 85 % fraction of LAGBs was prepared, exhibiting higher thermal stability than conventional nanocrystalline at 800 °C. Its oxidation resistance is superior to coarse-grained alloy, but inferior to the HAGBs-rich nanograins due to lower diffusion coefficient of LAGBs. This provides guidance for designing thermally stable and oxidation-resistant nanostructured alloys.

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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.