在正火处理后，富cr tial基合金在不变形的情况下获得了大量的< 101]超晶格位错和纳米孪晶

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

Materials Letters Pub Date : 2025-06-14 DOI:10.1016/j.matlet.2025.138937

Shiqiu Liu , Hongsheng Ding , Ruirun Chen , Jingjie Guo , Hengzhi Fu

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引用次数: 0

摘要

在1250℃下经3 h正火处理后，连续铸造制备的富cr tial基合金在不变形的情况下获得了大量的< 101]超晶格位错和纳米孪晶，显著提高了tial基合金的室温（RT）压缩性能。重点讨论了热处理后的显微组织特征和这些亚结构的形成机理。本研究将为TiAl金属间化合物的进一步强化和塑化提供有益的启示。

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Substantial 〈101] superlattice dislocations and nanotwins achieved without deformation in a casting Cr-rich TiAl-based alloy after a normalizing treatment

Herein, both substantial

〈 101]

superlattice dislocations and nanotwins were achieved without deformation in a Cr-rich TiAl-based alloy prepared by continuous casting after a normalization at 1250 ℃ for 3 h, which remarkably enhanced the room-temperature (RT) compressive properties of the TiAl-based alloy. The heat-treated microstructural characteristics and the formation mechanism of these substructures were discussed emphatically. This research will provide helpful inspiration for further strengthening and plasticizing of TiAl intermetallic.

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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