探索新一代γ-TiAl体系Ti-xAl-yNb-1Cr-1Mo-0.2C-0.2B（at.%）的合金空间：）相变、显微结构和纹理的各个方面

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2024-09-04 DOI:10.1016/j.matchar.2024.114332

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引用次数: 0

摘要

针对新一代γ-TiAl 基金属间化合物体系（Ti、Al、Nb、Cr、Mo、C、B），对相变的成分敏感性以及由此产生的微观结构和纹理进行了系统研究。在这一复杂的多组分体系中系统地增加铝含量和减少铌含量发现，凝固路径依次为β凝固、低析出凝固、高析出凝固和α凝固，从而导致铸件的微观结构、质地和元素偏析大相径庭。合金体系涉及多种固态相变，这些相变对成分变化非常敏感，从而导致各种微观结构和晶体学特征。

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Exploring an alloy space in a new generation γ-TiAl system Ti–xAl–yNb–1Cr–1Mo–0.2C–0.2B (at.%)): Aspects of phase transformation, microstructure and texture

The compositional sensitivity of phase transformation and resulting microstructure and texture has been systematically studied for a new generation γ-TiAl-based intermetallic system (Ti, Al, Nb, Cr, Mo, C, B). Systematic increase of Al and decrease of Nb content in this complex multi-component system revealed that the solidification path varied in the sequence of β solidification, hypo-peritectic solidification, hyper-peritectic solidification, and α solidification, consequently resulting in very different cast microstructure, texture, and elemental segregation. The alloy system involves multitudes of solid-state phase transformations, which are very sensitive to compositional variation, resulting in varieties of microstructural and crystallographic characteristics.

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.