高强韧抗氢脆高熵合金研究进展-中国材料进展

文章信息/Info

Title:: Research Progress on Strong and Tough Hydrogen-Embrittlement Resistant High-Entropy Alloys

作者:: 付正鸿; 李熙; 李志明; 1. 西南交通大学力学与航空航天学院，四川成都 611756 2. 中南大学材料科学与工程学院，湖南长沙 410083

Author(s):: FU Zhenghong; LI Xi; LI Zhiming; 1. School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 611756, China 2.School of Materials Science and Engineering, Central South University, Changsha 410083, China

Keywords:: hydrogen-embrittlement; high-entropy alloy; high strength; microstructure regulation; hydrogen diffusion; deformation mechanism

摘要:: 材料的氢脆敏感性通常随其机械强度的提高而升高，使得高强韧抗氢脆材料的开发面临挑战。高熵合金晶内显著的局部化学环境波动和晶格畸变有助于使其具有良好的氢相容性，在实现高强韧和抗氢脆等特征方面展现出发展潜力。对近年来高强韧抗氢脆高熵合金的研究现状进行了综述：首先总结了通过添加C，N和B等非金属间隙元素进行微合金化调控、析出相调控、主元比例调控和制备工艺优化等方式制备的高强韧高熵合金的抗氢脆性能；然后基于合金中氢的吸附及扩散行为、氢诱导的变形组织演化等研究，总结了合金的抗氢脆机理；最后展望了高强韧、抗氢脆高熵合金的未来发展趋势。

Abstract:: The increasing susceptibility to hydroge-embrittlement (HE) with the increase of material strength poses a key challenge in developing materials resistant to this phenomenon. High-entropy alloys (HEAs), characterized by significant localized chemical environment fluctuations and lattice distortions, demonstrate promising hydrogen compatibility. These attributes qualify them as potential candidates for manufacturing high-strength materials capable of withstanding HE. This article reviews the advancements in high-strength and HE-resistant HEAs. It begins by summarizing resistance improving to HE through strategies such as microalloying with non-metallic interstitial elements (e.g., C, N, and B), controlling precipitate phases, adjusting component ratios, and optimizing fabrication processes. The review then covers research on hydrogen absorption and diffusion behaviors, as well as the evolution of deformation microstructures induced by hydrogen in these alloys, and elucidates the mechanisms behind their HE resistance. Lastly, the paper projects future trends in the development of high-strength, toughness and HE-resistance HEAs.