Thermophysical Properties of Molten Stainless Steel Containing 5 mass % B₄C

Abstract

An electromagnetic levitation technique performed in a static magnetic field was used to measure density, surface tension, normal spectral emissivity, heat capacity, and thermal conductivity of molten 316L stainless steel (SS316L) and SS316L that contained 5 mass % B 4 C. The addition of 5 mass % B 4 C to the SS316L yielded reductions of 111 K, 6%, 19%, and 6% in the liquidus temperature, density, normal spectral emissivity, and thermal conductivity at the liquidus temperature of the SS316L, respectively. The heat capacity increased by 5% with this addition. Although the addition of 5 mass % B 4 C had no clear effect on the surface tensin, sulfur dissolved in the SS316L caused a significant decrease in the surface tension.

Measurements of thermophysical properties of solid and liquid NIST SRM 316L stainless steel

“…Enthalpy and uncorrected resistivity are in good agreement to the literature. Specific heat capacity in the liquid phase obtained in our work is 7% higher than reported by Wilthan et al [14] and 8.5% higher than reported by Fukuyama et al [16]. The value for specific heat capacity in the liquid phase reported by Mills [4] is 2% lower than the obtained value of this work.…”

“…The black crosses represent data of a similar AISI 316L stainless steel measured by Kaschnitz et al [15]. The solid green line without markers represents data of a similar AISI 316L stainless steel measured by Fukuyama et al [16]. material in the melt phase during DSC measurements, the onset of the melting peak in the DSC signal provides an upper limit of the solidus temperature.…”

“…pulse-heating, exp. data pulse-heating fit Wilthan et al [14] Kaschnitz et al [15] Mills [4] Fukuyama et al [16] Figure 8 Density as a function of temperature. The red circles are the measured data, and the solid blue lines are linear fits.…”

High-Resolution Thermal Imaging and Analysis of TIG Weld Pool Phase Transitions

“…This is because emissivity is expressed as a value between 0 and 1. A value for the emissivity of molten stainless steel at 0.27 can be found in the literature [19]. This is multiplied by 100 (to use the value as a percentage), then divided by the error per • C to give the approximate temperature error.…”

Thermophysical properties of austenitic stainless steel containing boron carbide in a solid state

“…This study aims to measure the thermophysical properties of the eutectic mixture in a solid state with a wide temperature range. To date, the thermophysical property measurements of the eutectic mixture from the solid to liquid state (Takai et al, 2019;Fukuyama et al, 2019;Ohta et al, 2019) and physical model development for the eutectic melting reaction (Liu et al, 2018) were conducted together with research institutes in our project (Yamano et al, 2019). As mentioned above, the SS-B4C produced by contact between SS and B4C is considered microscopically inhomogeneous from place to place.…”