TY - JOUR
T1 - Cooling Curve Analysis as an Alternative to Dilatometry in Continuous Cooling Transformations
AU - Gibbs, John W.
AU - Schlacher, Christian
AU - Kamyabi-Gol, Ata
AU - Mayr, Peter
AU - Mendez, Patricio F.
N1 - Publisher Copyright:
© 2014, The Minerals, Metals & Materials Society and ASM International.
PY - 2015/1
Y1 - 2015/1
N2 - Dilatometry and cooling curve analysis (CCA) are two methods of determining the evolution of a phase transformation with temperature. The two methods are similar conceptual in that they take an indirect measure of the transformation and extract phase fraction information from it; however, the differences between the two methods typically makes one method better suited to analyzing a given transformation. However, without a quantitative comparison between the two methods, it is difficult to use them interchangeably. We address this by presenting a quantitative comparison of CCA and dilatometry for a martensitic transformation in a 9Cr3W3CoVNb steel. The resulting phase fraction data matches very well, within 5 K (5 °C) for any given phase fraction. This paper also extends to the quantitative methodology of calorimetry to the analysis of dilatometric data, with results comparable to ASTM A1033-10, but with expected higher accuracy by accounting by variable thermal expansion coefficients.
AB - Dilatometry and cooling curve analysis (CCA) are two methods of determining the evolution of a phase transformation with temperature. The two methods are similar conceptual in that they take an indirect measure of the transformation and extract phase fraction information from it; however, the differences between the two methods typically makes one method better suited to analyzing a given transformation. However, without a quantitative comparison between the two methods, it is difficult to use them interchangeably. We address this by presenting a quantitative comparison of CCA and dilatometry for a martensitic transformation in a 9Cr3W3CoVNb steel. The resulting phase fraction data matches very well, within 5 K (5 °C) for any given phase fraction. This paper also extends to the quantitative methodology of calorimetry to the analysis of dilatometric data, with results comparable to ASTM A1033-10, but with expected higher accuracy by accounting by variable thermal expansion coefficients.
UR - http://www.scopus.com/inward/record.url?scp=84919761064&partnerID=8YFLogxK
U2 - 10.1007/s11661-014-2603-8
DO - 10.1007/s11661-014-2603-8
M3 - Article
AN - SCOPUS:84919761064
SN - 1073-5623
VL - 46
SP - 148
EP - 155
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 1
ER -