Effect of volume fraction on microstructure and mechanical properties of Si3N4/Al composites

Zi Yang Xiu; Guo Qin Chen; Gao Hui Wu; Wen Shu Yang; Yan Mei Liu

doi:10.1016/S1003-6326(11)61592-6

Effect of volume fraction on microstructure and mechanical properties of Si₃N₄/Al composites

Zi Yang Xiu^*
, Guo Qin Chen
, Gao Hui Wu
, Wen Shu Yang
, Yan Mei Liu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Si₃N₄ particles reinforced aluminium matrix composites (Si₃N₄/Al) with different particle volume fractions (45, 50, and 55) were fabricated by pressure infiltration method. The effects of Si₃N₄ volume fraction and T6 treatment on microstructure and mechanical properties of Si₃N₄/Al composite were investigated. The results show that Si₃N ₄/Al composites are well infiltrated with good particles dispersion and no apparent porosity or significant casting defects are observed. High density of dislocations in Al matrix around Si₃N₄ particles is observed. The bending strength of Si₃N₄/Al composites decreases with an increase in Si₃N₄ volume fraction, and can be greatly improved by T6 treatment. Elastic modulus of composites increases linearly with Si₃N₄ volume fraction. At a lower Si₃N₄ volume fraction, more tearing ridge and dimples with elongation are observed. T6 heat treatment shows minor effect on the fracture surface of composite.

Original language	English
Pages (from-to)	s285-s289
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	21
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/S1003-6326(11)61592-6
State	Published - Aug 2011
Externally published	Yes

Keywords

SiN/Al composite
bending properties
fracture surface
microstructure

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10.1016/S1003-6326(11)61592-6

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title = "Effect of volume fraction on microstructure and mechanical properties of Si3N4/Al composites",

abstract = "Si3N4 particles reinforced aluminium matrix composites (Si3N4/Al) with different particle volume fractions (45, 50, and 55) were fabricated by pressure infiltration method. The effects of Si3N4 volume fraction and T6 treatment on microstructure and mechanical properties of Si3N4/Al composite were investigated. The results show that Si3N 4/Al composites are well infiltrated with good particles dispersion and no apparent porosity or significant casting defects are observed. High density of dislocations in Al matrix around Si3N4 particles is observed. The bending strength of Si3N4/Al composites decreases with an increase in Si3N4 volume fraction, and can be greatly improved by T6 treatment. Elastic modulus of composites increases linearly with Si3N4 volume fraction. At a lower Si3N4 volume fraction, more tearing ridge and dimples with elongation are observed. T6 heat treatment shows minor effect on the fracture surface of composite.",

keywords = "SiN/Al composite, bending properties, fracture surface, microstructure",

author = "Xiu, \{Zi Yang\} and Chen, \{Guo Qin\} and Wu, \{Gao Hui\} and Yang, \{Wen Shu\} and Liu, \{Yan Mei\}",

year = "2011",

month = aug,

doi = "10.1016/S1003-6326(11)61592-6",

language = "英语",

volume = "21",

pages = "s285--s289",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

issn = "1003-6326",

publisher = "Nonferrous Metals Society of China",

number = "SUPPL. 2",

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TY - JOUR

T1 - Effect of volume fraction on microstructure and mechanical properties of Si3N4/Al composites

AU - Xiu, Zi Yang

AU - Chen, Guo Qin

AU - Wu, Gao Hui

AU - Yang, Wen Shu

AU - Liu, Yan Mei

PY - 2011/8

Y1 - 2011/8

N2 - Si3N4 particles reinforced aluminium matrix composites (Si3N4/Al) with different particle volume fractions (45, 50, and 55) were fabricated by pressure infiltration method. The effects of Si3N4 volume fraction and T6 treatment on microstructure and mechanical properties of Si3N4/Al composite were investigated. The results show that Si3N 4/Al composites are well infiltrated with good particles dispersion and no apparent porosity or significant casting defects are observed. High density of dislocations in Al matrix around Si3N4 particles is observed. The bending strength of Si3N4/Al composites decreases with an increase in Si3N4 volume fraction, and can be greatly improved by T6 treatment. Elastic modulus of composites increases linearly with Si3N4 volume fraction. At a lower Si3N4 volume fraction, more tearing ridge and dimples with elongation are observed. T6 heat treatment shows minor effect on the fracture surface of composite.

AB - Si3N4 particles reinforced aluminium matrix composites (Si3N4/Al) with different particle volume fractions (45, 50, and 55) were fabricated by pressure infiltration method. The effects of Si3N4 volume fraction and T6 treatment on microstructure and mechanical properties of Si3N4/Al composite were investigated. The results show that Si3N 4/Al composites are well infiltrated with good particles dispersion and no apparent porosity or significant casting defects are observed. High density of dislocations in Al matrix around Si3N4 particles is observed. The bending strength of Si3N4/Al composites decreases with an increase in Si3N4 volume fraction, and can be greatly improved by T6 treatment. Elastic modulus of composites increases linearly with Si3N4 volume fraction. At a lower Si3N4 volume fraction, more tearing ridge and dimples with elongation are observed. T6 heat treatment shows minor effect on the fracture surface of composite.

KW - SiN/Al composite

KW - bending properties

KW - fracture surface

KW - microstructure

UR - https://www.scopus.com/pages/publications/82455192666

U2 - 10.1016/S1003-6326(11)61592-6

DO - 10.1016/S1003-6326(11)61592-6

M3 - 文章

AN - SCOPUS:82455192666

SN - 1003-6326

VL - 21

SP - s285-s289

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - SUPPL. 2

ER -

Effect of volume fraction on microstructure and mechanical properties of Si₃N₄/Al composites

Abstract

Keywords

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