Improving the Mechanical Properties of Al-Si Composites through the Synergistic Strengthening of TiB2 Particles and BN Nanosheets

被引：2

作者：

Wang, Yiren ^{[1
]}

Wang, Jian ^{[2
]}

Xu, Zunyan ^{[2
]}

Xu, Baoqiang ^{[1
]}

Yu, Bingheng ^{[2
]}

Dong, Jianwu ^{[2
]}

Li, Caiju ^{[2
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Peoples R China

[2] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

METALS | 2024年 / 14卷 / 09期

基金：

中国国家自然科学基金;

关键词：

aluminum silicon composite; powder metallurgy; microstructure; mechanical properties; MICROSTRUCTURES; ALLOYS; SR; CU;

D O I：

10.3390/met14090957

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The size and distribution of the silicon phase and intermetallic phase are important factors affecting the properties of Al11Si3Cu2NiMg alloy (M142). In this study, BNNS and micro-TiB2 were used to synergistically refine and reinforce M142 composites (M142-BNNS-TiB2). After T6 heat treatment, the comprehensive mechanical properties of M142-BN-TiB2 composites were excellent, with an ultimate tensile strength of 463 MPa and an elongation of 2.6%. In addition, the introduction of BNNS and micro-TiB2 changed the fracture mode of M142 from brittle fracture to quasi-cleavage fracture, and the introduction of BNNS and micro-TiB2 refined the Si phase and intermetallic phase, which could change the origin of the crack in the composite, thus improving the ductility of the composite.

引用

页数：13

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