Latent heat in the thermoelastic martensitic transformation of Co

Journal Article · Fri Apr 14 04:00:00 EDT 2000 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(00)00297-9· OSTI ID:20050508

Kuang, Z Q; Zhang, J X; Zhang, X H; Liang, K F; Fung, P C.W.

In this paper differential scanning calorimetry (DSC) methods were used to study the kinetics of phase transformation in Co. In the authors' experiment measurements performed at constant temperature scanning rates are first done, for they allow both the determination of important thermodynamic parameters, such as enthalpy differences between phases, as well as the characteristic of the kinetics of the transformation considered. The dependence of the latent heat on the scanning rate can be shown in a general power law, with different scaling exponents on heating and cooling. Furthermore, in order to show the dependence of latent heat to thermal history, another designed experiment is introduced. Discussions of the experimental results are also present.

• Research Organization: Zhongshan Univ., Guangzhou (CN)
• OSTI ID: 20050508
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 8 Vol. 42; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
CALORIMETRY
COBALT
CRYSTAL-PHASE TRANSFORMATIONS
KINETICS
MARTENSITE
TRANSITION HEAT