Fracture Properties of SPS Tungsten Copper Powder Composites

被引：16

作者：

El-Hadek, Medhat Awad ^{[1
]}

Kaytbay, Saleh Hamada ^{[2
]}

机构：

[1] Port Said Univ, Fac Engn Port Said, Dept Mech Design & Prod, Port Fouad 42523, Port Said, Egypt

[2] Benha Univ, Fac Engn Benha, Dept Mech Engn, Banha, Egypt

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2013年 / 44A卷 / 01期

关键词：

THERMOCHEMICAL PROCESS; THERMAL-CONDUCTIVITY; NANOCOMPOSITE POWDER; ELASTIC PROPERTIES; CU; ALLOY; MICROSTRUCTURE; CONSOLIDATION; FABRICATION; FIELD;

D O I：

10.1007/s11661-012-1396-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tungsten-copper composites with various copper nano-particles volume fractions were manufactured and examined. Tungsten-copper composites with 20 pct, 25 pct, and 30 pct volume fractions were mechanically mixed and sintered. spark plasma sintering (SPS) method was used for samples preparation at two different sintered temperatures 1273 K and 1373 K (1000 degrees C and 1100 degrees C). The effect of copper nano-particles on the bulk density, hardness, the coefficient of thermal expansion (CTE), electrical conductivity, and stress-strain behavior of the produced composites were studied. The hardness was found to decrease with the increase of the copper volume fraction in the composites. Conversely, the CTE and electrical conductivity increases with the increase of the copper volume fraction in the composites. Furthermore, the elastic modulus were extracted from tensile stress-strain behavior were found to increase with the increase of the copper volume fraction in the composites. Finally, the fracture surface roughness was studied using high resolution optical investigations and was noticeably higher with the increase of the copper volume fraction in the composites. DOI: 10.1007/s11661-012-1396-x (C) The Minerals, Metals & Materials Society and ASM International 2012

引用

页码：544 / 551

页数：8

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