Study of Residual Stresses in Bimetallic Work Rolls

Torres, Ingrid Neira; Gilles, Gaëtan; Tchuindjang, Jérôme Tchoufack; Lecomte-Beckers, Jacqueline; Sinnaeve, Mario; Habraken, Anne Marie

doi:10.4028/www.scientific.net/amr.996.580

Cited by 5 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite a number of studies focused on residual stress caused by quenching in the past decades, most studies dealt with small size components . Recently, Torres et al analyzed bimetallic work rolls during post casting cooling stage. Although they have studied the prediction of the residual stress on the high chrome steel roll, the most critical quenching process has not been covered yet.…”

Section: Previous Studies For Residual Stress Of Work Rollsmentioning

confidence: 99%

Residual Stress Simulation for Hot Strip Bimetallic Roll during Quenching

Noda

Sano

et al. 2016

steel research int.

View full text Add to dashboard Cite

Bimetallic rolls are widely used in hot rolling mills because of excellent hardness, wear resistance, and high temperature properties. Considerable residual stresses are produced for the bimetallic roll during quenching. Moreover, severe thermal stresses are caused by heating-cooling thermal cycles during subsequent hot rolling process. Fracture from the roll center may occur due to the residual stress adding to the thermal stress, and therefore, it is desirable to investigate the residual stress to improve roll service life. Therefore, FEM simulation of the bimetallic roll is performed for the quenching process. It should be noted that a large number of experimental data of the core and shell material are utilized for the wide range of temperature considering the quenching. The generation mechanism for the residual stress is discussed focusing on the effect of temperature gradient and phase transformation. Furthermore, the effects of shell-core ratio and diameter on residual stress are considered. Results show that the residual stress only slightly increases with increasing shell-core ratio, while significantly increases with increasing diameter.

show abstract

Section: Previous Studies For Residual Stress Of Work Rollsmentioning

confidence: 99%

Residual Stress Simulation for Hot Strip Bimetallic Roll during Quenching

Noda

Sano

et al. 2016

steel research int.

View full text Add to dashboard Cite

show abstract

Phase Transformations and Crack Initiation in a High-Chromium Cast Steel Under Hot Compression Tests

Tchuindjang

Torres

Flores

et al. 2015

J. of Materi Eng and Perform

Self Cite

View full text Add to dashboard Cite

The mechanical behavior of the fully austenitic matrix of high-chromium cast steel (HCCS) alloy is determined by external compression stress applied at 300 and 700°C. The microstructure is roughly characterized toward both optical and scanning electron microscopy analyses. Dilatometry is used during heating from room temperature up to austenitization to study the solid-state phase transformations, precipitation, and dissolution reactions. Two various strengthening phenomena (precipitation hardening and stress-induced bainite transformation) and one softening mechanism (dynamic recovery) are highlighted from compression tests. The influence of the temperature and the carbide type on the mechanical behavior of the HCCS material is also enhanced. Cracks observed on grain boundary primary carbides allow establishing a rough damage model. The crack initiation within the HCCS alloy is strongly dependent on the temperature, the externally applied stress, and the matrix strength and composition.

show abstract