Paper Titles
Preface
Effect of Mo, Nb and V on Hot Deformation Behaviour, Microstructure and Hardness of Microalloyed Steels
p.3
Extended Application of Hardness Prediction System for Temper Bead Welding of A533B Steel to Various Low-Alloy Steels
p.9
Cracking and Failure in a High Strength Low Alloy Steel during Solidification
p.15
Effect of Annealing Conditions on the Dissolution Process of Complex Carbonitrides in a V-Nb-Ti Microalloyed Steel
p.21
The Effect of Test Temperature on Deformation Microstructure and Fracture Mechanisms in CrMn High-Nitrogen Steels Alloyed (0-3 wt.%) with Vanadium
p.27
Characterisation of Precipitation and Coarsening of Carbides during Tempering in a Low Alloyed Quenched and Tempered Steel
p.33
On the Microstructural Characteristics of UFG Microalloyed Steel Influencing the Mechanical Behavior under Dynamic Loading
p.39
Critical Strain for Complete Austenite Recrystallisation during Rough Rolling of C-Mn Steel and Nb-Ti-V Microalloyed Steel
p.46

Cracking and Failure in a High Strength Low Alloy Steel during Solidification

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Abstract:

The present study focuses on characterizing cracks and fracture that appeared during solidification in the segregated zones of the as-cast structure of a large size ingot made of high strength low alloy steel. Solidification experiment was conducted, using Gleeble® 3800 thermo-mechanical simulator, on samples taken from the ingot/hot top interface of a 40 MT (Metric Ton) ingot. The thermal cycle consisted in heating from ambient temperature to 1385 °C with a constant heating rate of 2 °C/s followed by a free cooling. Optical and scanning electronic microscopies were used to analyze and quantify the cracked regions. Microstructural observations revealed that shrinkage during rapid solidification of melted grain boundaries ultimately led to the initiation and propagation of cracks.

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Periodical:

Materials Science Forum (Volume 941)

Pages:

15-20

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.15

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Online since:

December 2018

Authors:

Abdelhalim Loucif*, Davood Shahriari, Kanwal Chadha, Chunping Zhang, Mohammad Jahazi, Rami Tremblay, Louis Philippe Lapierre-Boire

Keywords:

Cooling Rate, Crack, Fracture, High Strength Steel, Segregation, Solidification

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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