Synergistic improvement of corrosion-strength of Al-Mg alloy by trace Sc/Zr and TiB2 particles

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

Corrosion Science Pub Date : 2025-02-01 DOI:10.1016/j.corsci.2025.112760

Xinchen Li , Kai Zhao , Xuekai Li , Bingzhi Li , Liyuan Yang , Enyu Guo , Huijun Kang , Zongning Chen , Tongmin Wang

引用次数: 0

Abstract

Intergranular corrosion (IGC) induced by the Mg-rich (β-Al₃Mg₂) precipitates in Al-Mg alloys during service presents significant safety risks and limits material development. Introducing trace Sc-Zr elements and TiB₂ particles into the alloy creates a dual heterostructure with abundant low-angle grain boundaries (LAGBs). The L1₂-Al₃(Sc,Zr) nano-precipitates inhibit recrystallization and stabilize the microstructure by pinning grain boundaries. TiB₂ particles refine the grain structure and promote LAGBs formation, reducing Mg-rich phase precipitation along grain boundaries. This alloy achieves high yield strength (∼381.5 MPa), elongation (∼11.2 %), and excellent IGC resistance, offering a novel approach to balancing mechanical properties and corrosion resistance in Al-Mg 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.