通过液态金属置换获得钛/镁双连续复合材料的力学性能

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-10-28 DOI:10.1016/j.scriptamat.2024.116413

Yusuke Ohashi, Hidemi Kato

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引用次数: 0

摘要

以钛-钪前驱体的微观结构为模板，制造出具有α-钛/α-镁双相微观结构的钛/镁复合材料。将具有α-钛/α-钪双相微观结构的钛钪前驱体合金浸入熔融镁中，利用合金成分与金属熔体之间化学作用的差异，只有前驱体中的α-钪被熔融镁取代。钛/镁复合材料的极限拉伸强度为 308.4 兆帕，拉伸试验的伸长率为 6.8%。拉伸方向伸长的微观结构表明，α-钛相和α-镁相发生了协同变形，从而提高了延展性。不相溶相在拉伸方向上的连续微观结构以及因几何限制而未分离的弱界面可能是复合材料的硬度特性遵循 Voigt 规则的原因。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Mechanical properties of Ti/Mg bicontinuous composite by liquid metal replacement

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Mechanical properties of Ti/Mg bicontinuous composite by liquid metal replacement

A Ti/Mg composite with bicontinuous microstructure of α-Ti/α-Mg was fabricated using a Ti-Sc precursor's microstructure as a template. A Ti-Sc precursor alloy with α-Ti/α-Sc dual-phase microstructure was immersed in molten Mg, and using differences in chemical interactions between the alloy's components and the metallic melt, only α-Sc of the precursor was replaced by molten Mg. The Ti/Mg composite exhibited an ultimate tensile strength of 308.4 MPa and elongation of 6.8 % by a tensile test. The microstructure elongated in the tensile direction indicates that the α-Ti and α-Mg phases cooperatively deformed and contributed to ductility. The continuous microstructure in the tensile direction of the immiscible phases and the weak interface that does not separate because of geometric constraints may be the reason why the hardness properties of the composite follow the Voigt rule.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.