Simultaneous achievement of superior tensile properties and melt corrosion resistance in a single-phase BCC Ti32Nb32Ta32W4 multi-principal element alloy

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-07-03 DOI:10.1016/j.intermet.2025.108904

Jiangchao Hao , Zeyu Ding , Mingliang Wang , Yiping Lu

{"title":"Simultaneous achievement of superior tensile properties and melt corrosion resistance in a single-phase BCC Ti32Nb32Ta32W4 multi-principal element alloy","authors":"Jiangchao Hao , Zeyu Ding , Mingliang Wang , Yiping Lu","doi":"10.1016/j.intermet.2025.108904","DOIUrl":null,"url":null,"abstract":"<div><div>Molten metal corrosion critically compromises the structural integrity of nuclear reactors, inducing accelerated material degradation that jeopardizes operational safety and plant reliability. The development of advanced corrosion-resistant structural materials emerges as an essential engineering solution to mitigate these multifaceted challenges. Here, we present a novel refractory Ta<sub>32</sub>Nb<sub>32</sub>Ti<sub>32</sub>W<sub>4</sub> high-entropy alloy (HEA) with single-phase BCC structure that demonstrates exceptional synergy between mechanical strength and molten metal corrosion resistance. Remarkably, the alloy exhibits corrosion resistance against molten cerium (Ce) comparable to pure tantalum (Ta) benchmark materials, while achieving 50 % cost reduction in raw materials. Mechanical characterization reveals remarkable enhancement with ultimate tensile strength (703.7 MPa) and yield strength (682 MPa) exceeding pure Ta counterparts by 119 % and 151 % respectively, while maintaining comparable ductility (20.4 % elongation vs. Ta's 25 %). This breakthrough establishes a new paradigm for developing cost-effective structural materials in nuclear coolant systems through refractory HEA design strategy.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"185 ","pages":"Article 108904"},"PeriodicalIF":4.3000,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Intermetallics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0966979525002699","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Molten metal corrosion critically compromises the structural integrity of nuclear reactors, inducing accelerated material degradation that jeopardizes operational safety and plant reliability. The development of advanced corrosion-resistant structural materials emerges as an essential engineering solution to mitigate these multifaceted challenges. Here, we present a novel refractory Ta₃₂Nb₃₂Ti₃₂W₄ high-entropy alloy (HEA) with single-phase BCC structure that demonstrates exceptional synergy between mechanical strength and molten metal corrosion resistance. Remarkably, the alloy exhibits corrosion resistance against molten cerium (Ce) comparable to pure tantalum (Ta) benchmark materials, while achieving 50 % cost reduction in raw materials. Mechanical characterization reveals remarkable enhancement with ultimate tensile strength (703.7 MPa) and yield strength (682 MPa) exceeding pure Ta counterparts by 119 % and 151 % respectively, while maintaining comparable ductility (20.4 % elongation vs. Ta's 25 %). This breakthrough establishes a new paradigm for developing cost-effective structural materials in nuclear coolant systems through refractory HEA design strategy.

Abstract Image

查看原文本刊更多论文

在单相BCC Ti32Nb32Ta32W4多主元素合金中同时获得了优异的拉伸性能和耐熔体腐蚀性能

熔融金属腐蚀严重损害核反应堆的结构完整性，导致材料加速降解，危及运行安全和核电站的可靠性。开发先进的耐腐蚀结构材料是缓解这些多方面挑战的基本工程解决方案。在此，我们提出了一种具有单相BCC结构的新型耐火Ta32Nb32Ti32W4高熵合金（HEA），该合金在机械强度和熔融金属耐腐蚀性之间表现出卓越的协同作用。值得注意的是，该合金对熔融铈（Ce）的耐腐蚀性与纯钽（Ta）基准材料相当，同时原材料成本降低了50%。力学特性表明，与纯Ta相比，其极限抗拉强度（703.7 MPa）和屈服强度（682mpa）分别提高了119%和151%，同时保持了相当的延展性（伸长率为20.4%，而Ta为25%）。这一突破为通过耐火HEA设计策略开发具有成本效益的核冷却剂系统结构材料建立了新的范例。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.