On the specific heat and thermal diffusivity of CGI and SGI cast irons
2017 (English)In: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, 1-7 p.Article in journal (Refereed) Epub ahead of print
The specific heat and thermal diffusivity of Compacted Graphite Iron (CGI) and Spheroidal Graphite Iron (SGI) were measured at temperatures ranging between 373 and 773 K (100 and 500 °C) using differential scanning calorimetry (DSC) and between 298 and 773 K (25 and 500 °C) using the laser flash method, respectively. Specific heat increased with increasing amounts of graphite and pearlite, as well as with Si content. As a recommended value of the specific heat for fully ferritic high-silicon SGI, the following relation was suggested:(Formula presented.) where T is the temperature in Celsius, (Formula presented.) is the mass% of Si, and fg is the area fraction of graphite (%). The thermal diffusivity of cast irons tends to increase with increasing amounts of graphite, and decrease with greater nodularity. It was found that nodularity had a strong influence on thermal diffusivity in the nodularity range of 15–30%.
Place, publisher, year, edition, pages
Maney Publishing, 2017. 1-7 p.
differential scanning calorimetry, high-silicon cast iron, laser flash method, Specific heat capacity, thermal diffusivity, Calorimeters, Calorimetry, Cast iron, Diffusion, Graphite, Iron, Superconducting materials, Area fraction, Compacted graphite iron, Laser flash methods, Nodularity, Recommended values, Si content, Silicon cast iron, Spheroidal graphite, Specific heat
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:hj:diva-35158DOI: 10.1080/13640461.2017.1292987ScopusID: 2-s2.0-85013031429OAI: oai:DiVA.org:hj-35158DiVA: diva2:1078752