了解碳添加对 TiMoNbZr 合金机械和磨损性能的影响

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2024-06-19 DOI:10.1016/j.matlet.2024.136888

Avinash Chavan, Soumya Kanta Panda, Mangal Roy

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引用次数: 0

摘要

为了提高机械和摩擦学性能，在一系列基于 TiMoNbZrCx（x = 0、0.03、0.05、& 0.09 wt%）的难熔高熵合金（RHEAs）中微合金化了碳。在添加了 C 的样品中，所有 RHEA 都以 BCC 为主要相，并伴有少量立方碳化物相。C 含量的增加使微观结构趋于细化，这归因于 Zenner 针化效应，并进一步提高了硬度（从 ∼ 610 Hv 提高到 727 Hv）和屈服强度（从 ∼ 1668 MPa 提高到 1990 MPa）。低碳含量（0.03 wt%）可将体外耐磨性提高一个数量级，而高碳含量则会增加磨损率，这归因于碳化物辅助第三体磨损。

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Understanding the effects of carbon addition on mechanical and wear properties of TiMoNbZr alloy

In order to enhance mechanical and tribological properties, carbon was microalloyed in a series of TiMoNbZrC_x (x = 0, 0.03, 0.05, & 0.09 wt%) based refractory high entropy alloys (RHEAs). All the RHEAs exhibited BCC as major phase with minor cubic carbide phases in C added samples. Increase in C content tend to refine microstructure attributted to Zenner pinning effect, and further enhance its hardness (from ∼610 to 727 Hv) and yield stength (from ∼1668 MPa to 1990 MPa). The lean C (0.03 wt%) content enhanced in-vitro wear resitance by an order, while higher C addition accompanied an increase in wear rate ascribed to carbide assisted third body abrasion.

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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