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Retraction published on 18 June 2016, see Materials 2016, 9(6), 488.

Open AccessArticle
Materials 2016, 9(2), 119; doi:10.3390/ma9020119

Porosity Defect Remodeling and Tensile Analysis of Cast Steel

1
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
2
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
3
Art and Science School, Eastern Michigan University, Ypsilanti, MI 48197, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Richard Thackray
Received: 29 December 2015 / Revised: 27 January 2016 / Accepted: 3 February 2016 / Published: 22 February 2016
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Abstract

Tensile properties on ASTM A216 WCB cast steel with centerline porosity defect were studied with radiographic mapping and finite element remodeling technique. Non-linear elastic and plastic behaviors dependent on porosity were mathematically described by relevant equation sets. According to the ASTM E8 tensile test standard, matrix and defect specimens were machined into two categories by two types of height. After applying radiographic inspection, defect morphologies were mapped to the mid-sections of the finite element models and the porosity fraction fields had been generated with interpolation method. ABAQUS input parameters were confirmed by trial simulations to the matrix specimen and comparison with experimental outcomes. Fine agreements of the result curves between simulations and experiments could be observed, and predicted positions of the tensile fracture were found to be in accordance with the tests. Chord modulus was used to obtain the equivalent elastic stiffness because of the non-linear features. The results showed that elongation was the most influenced term to the defect cast steel, compared with elastic stiffness and yield stress. Additional visual explanations on the tensile fracture caused by void propagation were also given by the result contours at different mechanical stages, including distributions of Mises stress and plastic strain. View Full-Text
Keywords: cast steel; porosity; mapping; radiographic; simulation cast steel; porosity; mapping; radiographic; simulation
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).

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MDPI and ACS Style

Sun, L.; Liao, R.; Lu, W.; Fu, S. Porosity Defect Remodeling and Tensile Analysis of Cast Steel. Materials 2016, 9, 119.

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