文章信息/Info

Title:

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

文章編號:

1674-3962(2025)01-0101-10

作者:

付正鴻; 李熙; 李志明

1. 西南交通大學力學與航空航天學院，四川 成都 611756 2. 中南大學材料科學與工程學院，湖南 長沙 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

關鍵詞:

氫脆; 高熵合金; 高強度; 組織調控; 氫擴散; 變形機制

Keywords:

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

分類號:

TG172；TG139

DOI:

10.7502/j.issn.1674-3962.202410009

文獻標志碼:

A

摘要:

材料的氫脆敏感性通常隨其機械強度的提高而升高，使得高強韌抗氫脆材料的開發面臨挑戰。高熵合金晶內顯著的局部化學環境波動和晶格畸變有助于使其具有良好的氫相容性，在實現高強韌和抗氫脆等特征方面展現出發展潛力。對近年來高強韌抗氫脆高熵合金的研究現狀進行了綜述：首先總結了通過添加C，N和B等非金屬間隙元素進行微合金化調控、析出相調控、主元比例調控和制備工藝優化等方式制備的高強韌高熵合金的抗氫脆性能；然后基于合金中氫的吸附及擴散行為、氫誘導的變形組織演化等研究，總結了合金的抗氫脆機理；最后展望了高強韌、抗氫脆高熵合金的未來發展趨勢。

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.