Naslov
Thermal analysis of low alloy Cr-Mo steel

Autori
Gojić, Mirko ; Sućeska, Muhamed ; Rajić, Maša

Izvornik
Journal of Thermal Analysis and Calorimetry (1388-6150) 75 (2004), 3; 947-956

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
microstructure; specific heat; low-alloyed steel; thermal analysis; tempering

Sažetak
The paper deals with results of thermal analysis of low-alloyed chromium-molybdenum steel. The methods of analysis were dilatometry, differential thermal analysis (DTA) and differential scanning calorimetry (DSC). The Ac1 and Ac3 temperatures of the steel samples measured by dilatometry and DTA during the heating period were in good agreement. Generated by cooling a martensitic structure first became apparent at 503 K. Tempering of the as-quenched samples showed the presence of the second tempering stage in the region between 473 and 573 K. At that stage heat capacity decreased from 0.48 to 0.32 J g-1 K-1, as a result of conversion of transition carbide due to heat consumption. After normalization of the as-quenched samples the heat capacity values were restored to between 0.42 and 0.47 J g-1 K-1 in the temperature range from 373 to 673 K.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Metalurgija

POVEZANOST RADA