The effect of vermicularity on the thermal conductivity of vermicular graphite cast iron

Ma, Zhijun; Dong, Tao; Yang, Zhong; Guo, Ya-Fang; Li, J.P.; Liang, Minxian; Yeung, Lugee T. Li

doi:10.1016/j.matdes.2015.12.169

Cited by 34 publications

(25 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…en an IGES file was generated and imported into ANSYS to establish the FE models [16,17]. Cast iron material can be seen as a kind of composite material [14,18,19]. Graphite, ferrite, and pearlite can been seen as three phases in the microstructure.…”

Section: Building Of Fe Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Computational Assessment of Thermal Conductivity of Compacted Graphite Cast Iron

Yang

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Two-dimensional FE models of CGI with different pearlite contents for thermal conductivity analysis were established according to the real metallographic images obtained by Pro/E and ANSYS. Meanwhile, thermal conductivity of CGI with different pearlite contents was tested through the laser flash method. It is indicated that the thermal conductivity of CGI declines with the increase of pearlite. When pearlite is increased from 10% to 80%, the experimental values decline from 46.63 W/m·K to 36.86 W/m·K, reducing by 21%. However, this declining tendency becomes gentle and slight when pearlite is more than 40%. In addition, the calculation results with the consideration of interfacial contact thermal conductance (ICTC) and pearlite are much close to experimental values; especially when pearlite is 80%, the difference between them is only about 2%. It can be concluded that the FE models are convenient and reasonable to analyze thermal conductivity of CGI.

show abstract

Section: Building Of Fe Modelsmentioning

confidence: 99%

“…According to Yang et al [16], ICTC can be seen as a thermal barrier resistance between diamond and aluminium matrix. Ma [17,19] pointed out that interfacial thermal conductance cannot be ignored in the analysis of heat conduction. As ascribed in the former section, CGI can be seen as a simple composite material.…”

Section: Interfacial Contactmentioning

confidence: 99%

Computational Assessment of Thermal Conductivity of Compacted Graphite Cast Iron

Yang

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…The tensile strength and yield strength of vermicular cast iron are higher than that of gray iron and lower than that of nodular cast iron. Its thermal conductivity, thermal fatigue resistance, machinability and shock absorption are similar to grey cast iron, 1) and its liquidity and feeding are better than nodular cast iron. Those good properties make it be widely used in the field of high mechanical thermal stress, such as cylinder body, cylinder head and brake of large diesel engine.…”

Section: Introductionmentioning

confidence: 97%

Influence Factors for the Determination of Vermicular Graphite Ratio in Cast Iron Measured by Ultrasonic Method

et al. 2018

View full text Add to dashboard Cite

The ultrasonic method was used to detect vermicular graphite ratio according to the relationship between them. However, there is little report how the factors affect the vermicular graphite ratio detection and ultrasonic velocity measurement. In this paper, using ECHOMETER1076 ultrasonic tester, stylus surface roughness tester and quantitative metallography, the influences of sample two-plane parallelism, probe incident angle, coupling agent type, surface roughness and matrix on the ultrasonic velocity were further studied by experiments and simulation. The parallelism and probe incident angle were found to have important influence on the ultrasonic velocity, increasing more than 4.58 m/s every 0.1°. Contrarily, the influence of coupling agent, surface roughness less than 5 and pearlite percentage were little, and even neglected. So, the parallelism and probe incident angle must be kept as small as possible and the surface roughness is not more than 5. This provide a basis for accurately measuring the ultrasonic velocity and predicting the vermiculate graphite ratio.

show abstract

“…Hence, VGCIs are widely used in the production of brake discs, exhaust manifolds, blocks and engine heads, and other fields of the automotive industry [8][9][10][11][12][13][14]15]. Vermicular cast irons are produced in a similar way as nodular cast irons, but with smaller amounts of inoculants which can be magnesium and/or cerium.…”

Section: Introductionmentioning

confidence: 99%

Effects of Vermiculariser, Inoculant and Copper Addition on Microstructure and Corrosion Properties of Vermicular Graphite Cast Iron

2022

View full text Add to dashboard Cite

show abstract

The effect of vermicularity on the thermal conductivity of vermicular graphite cast iron

Cited by 34 publications

References 22 publications

Computational Assessment of Thermal Conductivity of Compacted Graphite Cast Iron

Computational Assessment of Thermal Conductivity of Compacted Graphite Cast Iron

Influence Factors for the Determination of Vermicular Graphite Ratio in Cast Iron Measured by Ultrasonic Method

Effects of Vermiculariser, Inoculant and Copper Addition on Microstructure and Corrosion Properties of Vermicular Graphite Cast Iron

Contact Info

Product

Resources

About