Aging characteristics of a high volume fraction SiCp/LD2 composite

Min Zhao; Gaohui Wu; Longtao Jiang; Dongli Sun

Aging characteristics of a high volume fraction SiC_p/LD2 composite

Min Zhao
, Gaohui Wu^*
, Longtao Jiang
, Dongli Sun

^*Corresponding author for this work

Harbin Institute of Technology

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

4 Scopus citations

Abstract

A 40 vol%SiC_p/LD2 composite was fabricated by squeeze casting, and the effect of high volume fraction SiC particulate on aging characteristics at different aging temperatures was studied. The results show that the strengthening effect due to the addition of particles plays the leading role and aging strengthening is not the major strengthening mechanism for the high volume fraction SiC_p/LD2 composite. With the increasing of temperature the precipitation processes become accelerated, and the time to reach the peak hardness is shortened. Comparatively, at low aging temperature the peak hardness of composite is the highest and the aging process is more accelerated than that of LD2 alloy. The formation of G. P. region is severely suppressed and the thermal diffusion activation energy of β′ phase is decreased due to the addition of SiC particles, which causes the precipitation of β′ phase easier and the precipitation temperature range wider than that of LD2 alloy.

Original language	English
Pages (from-to)	91-95
Number of pages	5
Journal	Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume	21
Issue number	3
State	Published - Jun 2004
Externally published	Yes

Keywords

Aging characteristic
DSC
High volume fraction particle reinforced composite
SiC particles
Squeeze casting
Thermal diffusion activation energy

Cite this

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title = "Aging characteristics of a high volume fraction SiCp/LD2 composite",

abstract = "A 40 vol\%SiCp/LD2 composite was fabricated by squeeze casting, and the effect of high volume fraction SiC particulate on aging characteristics at different aging temperatures was studied. The results show that the strengthening effect due to the addition of particles plays the leading role and aging strengthening is not the major strengthening mechanism for the high volume fraction SiCp/LD2 composite. With the increasing of temperature the precipitation processes become accelerated, and the time to reach the peak hardness is shortened. Comparatively, at low aging temperature the peak hardness of composite is the highest and the aging process is more accelerated than that of LD2 alloy. The formation of G. P. region is severely suppressed and the thermal diffusion activation energy of β′ phase is decreased due to the addition of SiC particles, which causes the precipitation of β′ phase easier and the precipitation temperature range wider than that of LD2 alloy.",

keywords = "Aging characteristic, DSC, High volume fraction particle reinforced composite, SiC particles, Squeeze casting, Thermal diffusion activation energy",

author = "Min Zhao and Gaohui Wu and Longtao Jiang and Dongli Sun",

year = "2004",

month = jun,

language = "英语",

volume = "21",

pages = "91--95",

journal = "Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica",

issn = "1000-3851",

publisher = "Beijing University of Aeronautics and Astronautics (BUAA)",

number = "3",

}

TY - JOUR

T1 - Aging characteristics of a high volume fraction SiCp/LD2 composite

AU - Zhao, Min

AU - Wu, Gaohui

AU - Jiang, Longtao

AU - Sun, Dongli

PY - 2004/6

Y1 - 2004/6

N2 - A 40 vol%SiCp/LD2 composite was fabricated by squeeze casting, and the effect of high volume fraction SiC particulate on aging characteristics at different aging temperatures was studied. The results show that the strengthening effect due to the addition of particles plays the leading role and aging strengthening is not the major strengthening mechanism for the high volume fraction SiCp/LD2 composite. With the increasing of temperature the precipitation processes become accelerated, and the time to reach the peak hardness is shortened. Comparatively, at low aging temperature the peak hardness of composite is the highest and the aging process is more accelerated than that of LD2 alloy. The formation of G. P. region is severely suppressed and the thermal diffusion activation energy of β′ phase is decreased due to the addition of SiC particles, which causes the precipitation of β′ phase easier and the precipitation temperature range wider than that of LD2 alloy.

AB - A 40 vol%SiCp/LD2 composite was fabricated by squeeze casting, and the effect of high volume fraction SiC particulate on aging characteristics at different aging temperatures was studied. The results show that the strengthening effect due to the addition of particles plays the leading role and aging strengthening is not the major strengthening mechanism for the high volume fraction SiCp/LD2 composite. With the increasing of temperature the precipitation processes become accelerated, and the time to reach the peak hardness is shortened. Comparatively, at low aging temperature the peak hardness of composite is the highest and the aging process is more accelerated than that of LD2 alloy. The formation of G. P. region is severely suppressed and the thermal diffusion activation energy of β′ phase is decreased due to the addition of SiC particles, which causes the precipitation of β′ phase easier and the precipitation temperature range wider than that of LD2 alloy.

KW - Aging characteristic

KW - DSC

KW - High volume fraction particle reinforced composite

KW - SiC particles

KW - Squeeze casting

KW - Thermal diffusion activation energy

UR - https://www.scopus.com/pages/publications/4344662536

M3 - 文章

AN - SCOPUS:4344662536

SN - 1000-3851

VL - 21

SP - 91

EP - 95

JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica

IS - 3

ER -

Aging characteristics of a high volume fraction SiC_p/LD2 composite

Abstract

Keywords

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