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