西安交通大学发表最新Nature论文

Core Viewpoint - The research highlights a method to enhance the hydrogen tolerance of aluminum alloys, specifically through the engineering of structurally complex phases, which can significantly improve their performance in hydrogen environments [2][5][6]. Group 1: Research Findings - The study published in Nature by researchers from Xi'an Jiaotong University and Shanghai Jiao Tong University focuses on aluminum-magnesium alloys with added scandium, demonstrating high hydrogen capture capabilities through the use of fine Al3Sc nanoparticles and in-situ formed core-shell structures [5][6]. - A two-step heat treatment process induces heterogeneous nucleation of the Al3(Mg, Sc)2 phase on the surface of Al3Sc nanoparticles, leading to localized magnesium segregation and the formation of Al3(Mg, Sc)2 [6]. - The customized distribution of dual nanoparticles in Al-Mg-Sc alloys results in a strength increase of approximately 40% and a nearly fivefold improvement in hydrogen embrittlement resistance compared to alloys without scandium, achieving a record elongation rate for aluminum alloys with hydrogen content up to 7 ppmw [6]. Group 2: Broader Applications - The strategy developed in this research can be applied to other aluminum-magnesium-based alloys, including Al-Mg-Ti-Zr, Al-Mg-Cu-Sc, and Al-Mg-Zn-Sc alloys, indicating its potential for widespread industrial application [6].