Effect of powder particle size on microstructural evolution and mechanical properties of network-reinforced TiAl composites

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

Materials Letters Pub Date : 2025-08-05 DOI:10.1016/j.matlet.2025.139205

Weigang Yang, Wenjing Li, Yanxun Mu, Yongfeng Liang, Junpin Lin

引用次数: 0

Abstract

This study systematically investigates the effects of matrix powder particle size on the microstructural evolution and mechanical properties of network-reinforced TiAl composites. Sintered samples derived from fine powders exhibit a duplex microstructure comprising γ-TiAl grains and (α₂ + γ) lamellar colonies, whereas those fabricated with coarse particles predominantly display (α₂ + γ) lamellar colonies. Furthermore, the UTS increases from 437.71 MPa to 534.90 MPa as the average particle size rises from 69.3 μm to 143.2 μm. The deformation of these composites is predominantly governed by deformation twinning within the γ-TiAl phase.

查看原文本刊更多论文

粉末粒度对网络增强TiAl复合材料组织演变及力学性能的影响

本研究系统地研究了基体粉末粒度对网络增强TiAl复合材料微观组织演变和力学性能的影响。细粉烧结后的样品表现出由γ- tial晶粒和（α2 + γ）片层集落组成的双相微观结构，而粗粉烧结后的样品则主要表现为（α2 + γ）片层集落。平均粒径从69.3 μm增加到143.2 μm， UTS从437.71 MPa增加到534.90 MPa。复合材料的变形主要受γ-TiAl相内变形孪晶的控制。

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

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