On Thermal Expansion and Density of CGI and SGI Cast Irons

Metals

Taishi Matsushita¹  Ehsan Ghassemali¹  Albano Gómez Saro¹  Lennart Elmquist²  Anders E. W. Jarfors¹ 

[1] Department of Materials and Manufacturing, School of Engineering, Jönköping University, P.O. Box 1026, Jönköping SE-551 11, Sweden;

关键词: thermal expansion;    high-silicon cast iron;    dilatometer;    density;    cycle test;   

DOI  :  10.3390/met5021000

来源: mdpi

【 摘 要 】

The thermal expansion and density of Compacted Graphite Iron (CGI) and Spheroidal Graphite Iron (SGI) were measured in the temperature range of 25–500 °C using push-rod type dilatometer. The coefficient of the thermal expansion (CTE) of cast iron can be expressed by the following equation: CTE = 1.38 × 10⁻⁵ + 5.38 × 10⁻⁸ N − 5.85 × 10⁻⁷ G + 1.85 × 10⁻⁸ T − 2.41 × 10⁻⁶ R_P/F − 1.28 × 10⁻⁸ NG − 2.97 × 10⁻⁷ GR_P/F + 4.65 × 10⁻⁹ TR_P/F + 1.08 × 10⁻⁷ G² − 4.80 × 10⁻¹¹ T² (N: Nodularity, G: Area fraction of graphite (%), T: Temperature (°C), R_P/F: Pearlite/Ferrite ratio in the matrix).

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.