通过受控结晶加工改变多组分 Fe50Cr14Mo14C9B8Tm5 块状金属玻璃的微观结构和力学性能

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-27 DOI:10.1063/5.0246720

X. L. Mi, L. Hu, B. W. Wu, Y. H. Jing, B. Wei

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引用次数: 0

摘要

在6.36 × 104 K s−1的冷却速率下制备了Fe50Cr14Mo14C9B8Tm5块状金属玻璃。通过控制结晶工艺对其杨氏模量和抗压强度进行了调节。在保持自由体积的情况下，低冷却速率诱导Tm2Mo2C3相的形成。从而将弹性变形极限提高到2.39%。低温退火后，首先形成（Fe, Cr）23(C， B)6相。随着退火温度的升高，合金中出现了四种类型的分散晶相，其中Fe3Mo3C相的硬度达到32.5 GPa。当退火温度达到1260 K时，平均晶粒尺寸仅为180 nm。Fe3Mo3C相体积分数高，晶化合金组织均匀，合金强度高，达到4.01 GPa，杨氏模量低，为237.11 GPa。

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Microstructure modulation and mechanical properties of multicomponent Fe50Cr14Mo14C9B8Tm5 bulk metallic glass through controlled crystallization processing

Fe50Cr14Mo14C9B8Tm5 bulk metallic glass was prepared at a cooling rate of 6.36 × 104 K s−1. Its Young's modulus and compressive strength were modulated through controlled crystallization processing. A low cooling rate induced the formation of the Tm2Mo2C3 phase while preserving free volume. Thus, the elastic deformation limit was increased to 2.39%. After low-temperature annealing, the (Fe, Cr)23(C, B)6 phase was formed at first. As the annealing temperature increased, four types of crystalline phases appeared as dispersions in this alloy, where the hardness of the Fe3Mo3C phase reached 32.5 GPa. Even when the annealing temperature reached 1260 K, the average grain size was only 180 nm. The large volume fraction of the Fe3Mo3C phase and uniform microstructure of crystallized alloy resulted in a high strength of 4.01 GPa and a low Young's modulus of 237.11 GPa.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.