Ceramic particles induce microstructure modification to achieve excellent strength-ductility combination of additive manufactured AlSi10Mg alloy

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: A Pub Date : 2025-03-26 DOI:10.1016/j.msea.2025.148259

Yating Li , Gaoqiu Sun , Zhiping Wang , Huanhuan Sun , Yaqi Deng , Xu Yuan , Xianfeng Li , Haowei Wang

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引用次数: 0

Abstract

The introduction of ceramic particles into aluminum (Al) alloys could enhance the strength of alloys but usually decrease the ductility. In this study, we employ the ceramic particles into additive manufactured AlSi10Mg alloy to enhance the strength and ductility simultaneously. The effect of TiB₂ particles on the microstructure during additive friction stir deposition (AFSD) and subsequent heat treatment was systematically studied. The results show the TiB₂ particles can refine grains during AFSD process, and improve the stability of Si particles and grain boundaries during solution treatment, and accelerate the aging response during aging treatment, leading to the rapid aging response of composite. Specifically, the TiB₂/AlSi10Mg composite aged at 170 °C for 1 h achieves excellent strength-ductility combination with the ultimate tensile strength reaching 353 MPa and the ductility reaching 7.7 %, overcoming the strength-ductility trade off in AFSDed AlSi10Mg alloys. The enhancement of the strength-ductility combination of TiB₂/AlSi10Mg composite should be attributed to grain refinement, stable Si particles and TiB₂ particles, reducing stress concentration near Si particle and preventing the crack propagation. These findings provide the new insights on tailoring microstructure and performance of additive manufactured Al alloys by ceramic particles.

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陶瓷颗粒诱导微观组织改性，使添加剂制备的AlSi10Mg合金具有优异的强度-塑性组合

在铝（Al）合金中引入陶瓷颗粒可以提高合金的强度，但通常会降低合金的延展性。在本研究中，我们将陶瓷颗粒应用于添加剂制造的AlSi10Mg合金中，同时提高了强度和延展性。系统研究了TiB2颗粒对添加剂搅拌摩擦沉积（AFSD）及后续热处理过程中微观组织的影响。结果表明：TiB2颗粒在AFSD过程中细化晶粒，在固溶处理过程中提高Si颗粒和晶界的稳定性，并在时效处理过程中加速时效响应，导致复合材料的快速时效响应。其中，170℃时效1 h的TiB2/AlSi10Mg复合材料的抗拉强度达到353 MPa，塑性达到7.7%，克服了AFSDed AlSi10Mg合金的强度-塑性平衡问题。TiB2/AlSi10Mg复合材料强度-塑性组合的增强应归因于晶粒细化，稳定的Si颗粒和TiB2颗粒，降低Si颗粒附近的应力集中，阻止裂纹扩展。这些发现为陶瓷颗粒增材制造铝合金的微观结构和性能定制提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Science and Engineering: A 工程技术-材料科学：综合

CiteScore

11.50

自引率

15.60%

发文量

1811

审稿时长

31 days

期刊介绍： Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.