Microstructure and Creep Properties of In situ ZrB2/AA6016 Composites Assisted by Ultrasonic treatment

被引：8

作者：

Lei, Jiao ^{[1
]}

Wang, Baowang ^{[1
]}

Zhao, Yutao ^{[1
]}

Wang, Zhiwen ^{[1
]}

Zhang, Qinjun ^{[1
]}

Hui, Li ^{[2
]}

Sheretskyi, Volodymyr ^{[3
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Peoples R China

[3] Natl Acad Sci Ukraine, Inst Phys Technol Met & Alloys, Kiev, Ukraine

来源：

INTERNATIONAL JOURNAL OF METALCASTING | 2024年 / 18卷 / 01期

基金：

中国国家自然科学基金;

关键词：

AA6016; alloy; ZrB2; particles; in suit reaction; ultrasonic; creep; TENSILE PROPERTIES; PARTICLE REINFORCEMENT; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; HEAT-TREATMENT; BEHAVIOR; RESISTANCE; CAST; MODEL;

D O I：

10.1007/s40962-023-01035-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

High-energy ultrasonic controlling Al-KBF4-K2ZrF6 reaction system was used to prepare ZrB2/AA6016 nanoparticle-reinforced aluminum matrix composites (PRAMC). Microstructural observations revealed that acoustic fluidic cavitation promoted the collapse and dispersion of nano-clusters. The plateau of the hardening curve indicates that ultrasonic treatment can improve the plasticity and toughness of the composite. Under 250 degrees C-70MPa, the apparent stress exponents of the matrix alloy, 3wt% ZrB2/AA6016 and 3wt% ultrasonic-assisted ZrB2/AA6016 composites are 7.34, 9.37, 12.62, respectively. The apparent activation energies are 165.20kJ/mol, 178.83kJ/mol and 215.33kJ/mol, respectively. According to the linear correlation coefficient, the true stress index of the composite material is determined to be 5, which indicates that the creep mechanism of the composite material is the dislocation climbing mechanism. Creep fracture analysis showed that the nano-ZrB2 particles can effectively hinder the propagation of cracks, and ultrasonic treatment can effectively alleviate the stress concentration defects caused by nano-clusters.

引用

页码：620 / 632

页数：13

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