开发具有可调热膨胀特性的新型钆-铁/钛复合材料

IF 1.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Express Pub Date : 2024-09-15 DOI:10.1088/2053-1591/ad7810
Feng Xia, Xigang Yang, Yiye Yan, Minxian Liang, Yongchun Guo, Siyu Yang, Zhijun Ma, Chan Wang, Zhongwei Zhang, Qidi Zhou and Jilin Liu
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引用次数: 0

摘要

钛合金被认为是最有前途的材料之一。然而,其不良的热膨胀特性仍然是其广泛应用的主要障碍。在这项研究中,我们探索了一种创新的设计策略来调整钛合金的热膨胀性能。具体来说,我们使用热膨胀系数(CTE)较低的稀土铁金属间化合物(Gd-Fe IMCs)作为膨胀抑制剂,通过原位反应制备出具有所需热膨胀性能的复合材料。Gd-Fe IMCs 的形态和尺寸可通过电磁场和超声波场进行有效控制,从而形成密集分布的微/纳米结构 Gd-Fe IMCs,并使复合材料具有很强的界面结合力。这种合金的 CTE 值为 6.8 × 10-6/K,极限拉伸强度高达 921 兆帕。钛合金物理性能(尤其是热膨胀性能)的改善可归因于 Gd-Fe IMC 与钛基体之间的协同效应。这种设计策略也可推广到其他钛合金,作为设计低热膨胀钛合金的参考。
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Development of novel Gd-Fe/Ti composites with tunable thermal expansion property
Titanium alloys are considered one of the most promising materials. However, their poor thermal expansion property remains a major obstacle to their widespread application. In this study, we explored an innovative design strategy to tune the thermal expansion properties of titanium alloy. Specifically, we used rare earth iron intermetallic compounds (Gd-Fe IMCs) with low coefficient of thermal expansion (CTE) as expansion inhibitors to prepare composites with the required thermal expansion properties via in situ reaction. The morphology and size of Gd-Fe IMCs can be effectively controlled by electromagnetic and ultrasonic fields, resulting in a dense distribution of micro/nano-structured Gd-Fe IMCs and strong interfacial bonding of the composites. This alloy has an excellent CTE of 6.8 × 10−6/K and a high ultimate tensile strength of 921 MPa. The improvement in the physical properties (especially in thermal expansion properties) of titanium alloy can be attributed to the synergistic effect between Gd-Fe IMCs and Ti matrix. This design strategy can also be extended to other titanium alloys as a reference for designing low thermal expansion titanium alloys.
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来源期刊
Materials Research Express
Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
4.50
自引率
4.30%
发文量
640
审稿时长
12 weeks
期刊介绍: A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.
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