Next Article in Journal
The Effect of Processing Pass on the Microstructure and Mechanical Properties of a Friction Stir Processed As-Cast Mg-6 wt % Sn Alloy
Next Article in Special Issue
Applied Mathematical Modelling of Continuous Casting Processes: A Review
Previous Article in Journal
Anisotropy of the Microstructure and Tensile Properties in Ti-5Al-5Mo-5V-1Cr-1Fe near β Titanium Alloy during Hot Rolling and Heat Treatment
Previous Article in Special Issue
Numerical Simulation of Electromagnetic Field in Round Bloom Continuous Casting with Final Electromagnetic Stirring
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle

Simulation of Crack Initiation and Propagation in the Crystals of a Beam Blank

1,2,3, 2,3, 2,3,*, 2,3 and 2,3
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
North China University of Science and Technology, Tangshan 063210, Hebei, China
Hebei Engineering Research Center of High Quality Steel Continuous Casting, Tangshan 063009, Hebei, China
Author to whom correspondence should be addressed.
Metals 2018, 8(11), 905;
Received: 5 October 2018 / Revised: 28 October 2018 / Accepted: 1 November 2018 / Published: 5 November 2018
(This article belongs to the Special Issue Continuous Casting)
PDF [22491 KB, uploaded 6 November 2018]


Surface cracking seriously affects the quality of beam blanks in continuous casting. To study the mechanism of surface crack initiation and propagation under beam blank mesoscopic condition, this study established a polycrystalline model using MATLAB. Based on mesoscopic damage mechanics, a full implicit stress iterative algorithm was used to simulate the crack propagation and the stress and strain of pores and inclusions of the polycrystalline model using ABAQUS software. The results show that the stress at the crystal boundary is much higher than that in the crystal, cracks occur earlier in the former than in the latter, and cracks extend along the direction perpendicular to the force. When a polycrystalline model with pores is subjected to tensile stress, a stress concentration occurs when the end of the pores is perpendicular to the stress direction, and the propagation and aggregation direction of the pores is basically perpendicular to the direction of the tensile stress. When a polycrystalline model with impurities is subjected to force, the stress concentrates around the impurity but the strain here is minimal, which leads to the crack propagating along the impurity direction. This study can provide theoretical guidance for controlling the generation of macroscopic cracks in beam blanks. View Full-Text
Keywords: polycrystalline model; pores; inclusions; mechanism; beam blank; crystal; propagation polycrystalline model; pores; inclusions; mechanism; beam blank; crystal; propagation

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Yang, G.; Zhu, L.; Chen, W.; Guo, G.; He, B. Simulation of Crack Initiation and Propagation in the Crystals of a Beam Blank. Metals 2018, 8, 905.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top