A stabilized martensitic nucleation mechanism in TRIP-reinforced metallic glass composites with fractal structures

IF 8.3 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Acta Materialia Pub Date : 2025-03-14 DOI:10.1016/j.actamat.2025.120941
Ziyan Zhao, Juan Mu, Huanqi Liu, Ruixiang Bai, Yang Ren, Zhengwang Zhu, Haifeng Zhang, Yandong Wang
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Abstract

Fractal structures, inherent morphological characteristics of dendrites, play a crucial role in determining the mechanical properties of materials. In this work, a stable martensitic nucleation mechanism was revealed within TRIP (transformation-induced plasticity) reinforced bulk metallic glass composites with fractal structures. This finding emerged from a comprehensive synthesis of numerical simulations and experimental investigations. The identified stable martensitic nucleation mechanism initiates a stagewise interaction between martensitic transformation and shear band propagation, denoted as “martensite-induced shear bands” and “shear band-induced martensite”. These deformation mechanisms, driven by fractal structural dendrites, are instrumental in achieving a desirable equilibrium between strength and ductility, which is advantageous over the traditional compromise of strength for enhanced plasticity. The profound understanding of stable martensitic nucleation and stagewise deformation mechanisms provides significant insights into the mechanical behavior of these materials, thereby facilitating the modulation of mechanical properties, such as through preloading treatments. Our findings advance the fundamental comprehension of fractal structure in TRIP-reinforced bulk metallic glass composites and provide a novel perspective for the design of high-performance materials.

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来源期刊
Acta Materialia
Acta Materialia 工程技术-材料科学:综合
CiteScore
16.10
自引率
8.50%
发文量
801
审稿时长
53 days
期刊介绍: Acta Materialia serves as a platform for publishing full-length, original papers and commissioned overviews that contribute to a profound understanding of the correlation between the processing, structure, and properties of inorganic materials. The journal seeks papers with high impact potential or those that significantly propel the field forward. The scope includes the atomic and molecular arrangements, chemical and electronic structures, and microstructure of materials, focusing on their mechanical or functional behavior across all length scales, including nanostructures.
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