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IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-03-01 DOI:10.1016/j.matlet.2025.138324

Yang Chen, Pengliang Hou, Xi Wang

引用次数: 0

摘要

本研究通过分子动力学研究了多晶铁钴铬镍铝 0.5-X% ZrB2（X = 0、5、10）的强化机理。纳米压痕模拟显示，ZrB2 颗粒改善了模型的硬度和微区力学性能。特别是，ZrB2 吸收了米塞斯应力，降低了沿剪切平面中轴方向应变变化的剧烈程度，并减轻了压头周围的堆积。ZrB2 阻碍了位错的生长和滑移，从而导致了模型中内部平面缺陷的增加。由于 ZrB2 的作用，模型内部 HCP 相和其他相的数量增加，随后 FCC 相的含量减少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Atomic perspective of strengthening mechanism of ZrB2-reinforced FeCoCrNiAl0.5

In this study, the strengthening mechanism of polycrystalline FeCoCrNiAl_0.5-X% ZrB₂ (X = 0, 5, 10) was investigated via molecular dynamics. Nanoindentation simulations showed that ZrB₂ particles improved the hardness and microzone mechanical properties of models. In particular, ZrB₂ absorbed Mises stress, reduced the drasticness of strain changes along the mid-axis direction of the shear plane, and mitigated the pile-up around the indenter. The proliferation of internal planar defects in the model resulted from ZrB₂, which impeded the growth and slip of dislocations. The number of HCP phase and other phases rose inside the model due to ZrB₂, followed by the decrease in FCC phase content.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive