Effects of second-phase boron particles on impact response of aluminum

被引：9

作者：

Cheng, J. C. ^{[1
,2
]}

Li, H. Y. ^{[1
,2
]}

Li, C. ^{[3
]}

Xiao, X. H. ^{[4
]}

Zhong, Z. Y. ^{[1
,2
]}

Lu, L. ^{[1
,2
]}

Luo, S. N. ^{[1
,2
]}

机构：

[1] Southwest Jiaotong Univ, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Sichuan, Peoples R China

[2] Southwest Jiaotong Univ, Inst Mat Dynam, Chengdu 610031, Sichuan, Peoples R China

[3] Peac Inst Multiscale Sci, Chengdu 610031, Sichuan, Peoples R China

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 793卷

基金：

中国国家自然科学基金;

关键词：

Boron particle; Spallation; Impact; Aluminum; MECHANICAL-PROPERTIES; STRAIN-RATE; SPALL FRACTURE; DAMAGE; SIZE; MICROSTRUCTURES; DEFORMATION; STRENGTH; BEHAVIOR; COMPOSITES;

D O I：

10.1016/j.msea.2020.139805

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of second-phase boron particles (up to 0.15 wt%) on impact response of aluminum is investigated under high strain rate gas gun loading. The Hugoniot elastic limit (similar to 0.11 GPa) shows a negligible dependence on boron particle content up to 0.15 wt%. The second-phase particles reduce considerably spall strength of aluminum, and such reduction is more pronounced at high boron content. Spall strength undergoes a slight decrease at high impact velocities. Scanning electron microscopy and synchrotron X-ray computed tomography analyses indicate a competition between microvoid nucleation and microvoid growth. The damage features and spall strength characteristics can be attributed to the weak particle-matrix interface.

引用

页数：8

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