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

Porosity Defect Remodeling and Tensile Analysis of Cast Steel

by Linfeng Sun 1, Ridong Liao 1,*, Wei Lu 2 and Sibo Fu 3
School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
Art and Science School, Eastern Michigan University, Ypsilanti, MI 48197, USA
Author to whom correspondence should be addressed.
Academic Editor: Richard Thackray
Materials 2016, 9(2), 119;
Received: 29 December 2015 / Revised: 27 January 2016 / Accepted: 3 February 2016 / Published: 22 February 2016
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
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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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