The influence of nanocrystalline CoNiFeAl0.4Ti0.6Cr0.5 high-entropy alloy particles addition on microstructure and mechanical properties of SiCp/7075Al composites

被引：82

作者：

Lu, Tiwen ^{[1
]}

Scudino, Sergio ^{[2
]}

Chen, Weiping ^{[1
]}

Wang, Pei ^{[2
]}

Li, Dongyu ^{[1
]}

Mao, Mengdi ^{[1
]}

Kang, Limei ^{[1
]}

Liu, Yixiong ^{[3
]}

Fu, Zhiqiang ^{[1
]}

机构：

[1] South China Univ Technol, Guangdong Key Lab Adv Metall Mat Proc, Guangzhou 510640, Guangdong, Peoples R China

[2] IFW Dresden, Inst Complex Mat, Solidificat Proc & Complex Struct, Helmholtzstr 20, D-01069 Dresden, Germany

[3] Guangdong Polytech Normal Univ, Sch Mech & Elect Engn, Guangzhou 510665, Guangdong, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 726卷

基金：

中国国家自然科学基金;

关键词：

7075Al hybrid composites; HEA particles; Microstructure; Mechanical properties; MATRIX COMPOSITES; HYBRID COMPOSITES; AGING BEHAVIOR; WEAR BEHAVIOR; HIGH-STRENGTH; CR PARTICLES; SIZE; INTERFACE; DUCTILITY; LOAD;

D O I：

10.1016/j.msea.2018.04.080

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of nanocrystalline CoNiFeAl0.4Ti0.6Cr0.5 high-entropy alloy (HEA) particles addition on the microstructure and mechanical properties of SiCp/7075Al composites was investigated systematically. The CoNiFeAl0.4Ti0.6Cr0.5 high-entropy alloy was prepared by mechanical alloying, and the (5 vol% HEA(p) + 40 vol% SiCp)/7075Al (HEA-7075Al) and 45 vol% SiCp/7075Al (SiC-7075Al) composites were subsequently fabricated by squeeze casting. The HEA particles were well retained in the Al matrix and remained nanocrystalline following the squeeze casting and heat treatment process, which indicated that the CoNiFeAl0.4Ti0.6Cr0.5 high-entropy alloy has the advantage of sluggish diffusion behavior and thermal stability. The time for the HEA-7075Al composite reaching the aged-peak period (19.5 h) was slightly longer than that of the SiCp/7075Al composite (15h), indicating that the HEA particles addition has postponed the aging process, which can be ascribed to the decrease of dislocation density in the Al matrix, evaluated from XRD. Additionally, in contrast to the SiC-7075Al composite, the HEA-7075Al composite exhibits higher strength, better plasticity and higher modulus with the average values of 712 MPa, 0.82% and 171 GPa, respectively, which is the results of the good interface between HEA particles and Al matrix, high strength nanocrystalline HEA particles and proper dislocation density present in Al matrix.

引用

页码：126 / 136

页数：11

共 55 条

[1] Effect of the applied load, sliding distance and oxidation on the dry sliding wear behaviour of Al-10Si/SiCp composites produced by vacuum infiltration technique [J].

Acilar, M ;

Gul, F .

MATERIALS & DESIGN, 2004, 25 (03) :209-217

[2] Effect of sub-micron Al2O3 concentration on dry wear properties of 6061 aluminum based composite [J].

Al-Qutub, AM ;

Allam, IM ;

Qureshi, TW .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2006, 172 (03) :327-331

[3] Mechanical properties and wear behavior of Al-2 wt.% Cu alloy composites reinforced by B4C nanoparticles and fabricated by mechanical milling and hot extrusion [J].

Alizadeh, A. ;

Taheri-Nassaf, E. .

MATERIALS CHARACTERIZATION, 2012, 67 :119-128

[4] DEFORMATION OF PLASTICALLY NON-HOMOGENEOUS MATERIALS [J].

ASHBY, MF .

PHILOSOPHICAL MAGAZINE, 1970, 21 (170) :399-&

[5]

Cantor B, 2014, HIGH-ENTROPY ALLOYS, P1

[6] Fabrication and mechanical properties of AlCoNiCrFe high-entropy alloy particle reinforced Cu matrix composites [J].

Chen, Jian ;

Niu, Pengyun ;

Wei, Ting ;

Hao, Liang ;

Liu, Yunzi ;

Wang, Xianhui ;

Peng, Yuli .

JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 649 :630-634

[7] (SiCp+Ti)/7075Al hybrid composites with high strength and large plasticity fabricated by squeeze casting [J].

Chen, Weiping ;

Liu, Yixiong ;

Yang, Chao ;

Zhu, Dezhi ;

Li, Yuanyuan .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2014, 609 :250-254

[8] Alloying behavior, microstructure and mechanical properties in a FeNiCrCo0.3Al0.7 high entropy alloy [J].

Chen, Weiping ;

Fu, Zhiqiang ;

Fang, Sicong ;

Xiao, Huaqiang ;

Zhu, Dezhi .

MATERIALS & DESIGN, 2013, 51 :854-860

[9] Thermal conductivity of SPS consolidated Cu/diamond composites with Cr-coated diamond particles [J].

Chu, Ke ;

Liu, Zhaofang ;

Jia, Chengchang ;

Chen, Hui ;

Liang, Xuebing ;

Gao, Wenjia ;

Tian, Wenhuai ;

Guo, Hong .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 490 (1-2) :453-458

[10] Effects of Sc and Zr microalloying additions and aging time at 120 °C on the corrosion behaviour of an Al-Zn-Mg alloy [J].

Deng, Ying ;

Yin, Zhimin ;

Zhao, Kai ;

Duan, Jiaqi ;

Hu, Jian ;

He, Zhenbo .

CORROSION SCIENCE, 2012, 65 :288-298

← 1 2 3 4 5 6 →