Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

The starting point for this work were damages in rolls of chill casting. Results of damage analysis have shown that the reason for these damages were cracks caused by thermally induced residual stresses [1]. The reason for these microstructural residual stresses is a mismatch in the thermal expansion coefficients between the ferrite and cementite phases. It is well known that the thermal expansion coefficients of the ferrite and cementite phases are identical approaching the Curie-temperature of cementite (TC=210°C for pure Fe3C), whereas they are quite different at room temperature (Figure 1) [2,3]. Below the Curie-temperature the thermal expansion of cementite is smaller than that of the ferrite phase.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16B

Chapter

Chapter 6: Material Properties

Section

Coatings and Layers

Pages

1649-1653

DOI

10.1007/978-1-4615-5947-4_214

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Quantitative Evaluation of Thermally Induced Residual Sttresses in White Cast Iron and Steels with Different Cementite Morphologies

Brunswick, ME

The starting point for this work were damages in rolls of chill casting. Results of damage analysis have shown that the reason for these damages were cracks caused by thermally induced residual stresses [1]. The reason for these microstructural residual stresses is a mismatch in the thermal expansion coefficients between the ferrite and cementite phases. It is well known that the thermal expansion coefficients of the ferrite and cementite phases are identical approaching the Curie-temperature of cementite (TC=210°C for pure Fe3C), whereas they are quite different at room temperature (Figure 1) [2,3]. Below the Curie-temperature the thermal expansion of cementite is smaller than that of the ferrite phase.