Characterization of Fracture Toughness of As-Cast Si-Mo- Cr Ductile Cast Iron

Open Access

Year : 2022 | Volume : | : 1 | Page : 8-17

    Nanak Ram

  1. Vijay Gautam

  1. Scholar, Department of Mechanical Engineering, Delhi Technological University, Delhi, India
  2. Professor, Department of Mechanical Engineering, Delhi Technological University, Delhi, India


In the present study, a Si-Mo-Cr ductile cast iron is developed by taking three different combinations, viz. Heat-1, Heat-2 and Heat-3 of the selective amount of silicon, molybdenum, copper and chromium. For fracture toughness characterization, the specimens are prepared from the samples in “as-cast” conditions. The value of static fracture toughness obtained from the experiments for the specimen of Heat-2 with a fatigue pre-crack is 54.49 MPa√ , whereas, for the specimens of Heat-1 and Heat-3, the fracture toughness values are 47.52 and 39.48 MPa√ , respectively. The higher static fracture toughness may be attributed to the consistent nodule distribution within the matrix of ferrite and pearlite with lower microshrinkage porosity. According to the results obtained from finite element simulations with a fatigue pre-crack using the experimental data, the simulated results for fracture
toughness are found in agreement with the results obtained from the experimental data.

Keywords: Ductile cast iron, nodularity, microstructure, single edge-notched beam, fracture toughness, FE simulations

This article belongs to Conference RAMMTE-2022: Recent Advances in Materials, Manufacturing and Thermal Engineering

How to cite this article: Nanak Ram, Vijay Gautam Characterization of Fracture Toughness of As-Cast Si-Mo- Cr Ductile Cast Iron jopc 2022; 10:8-17
How to cite this URL: Nanak Ram, Vijay Gautam Characterization of Fracture Toughness of As-Cast Si-Mo- Cr Ductile Cast Iron jopc 2022 {cited 2022 Nov 30};10:8-17. Available from:

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Conference Open Access Original Research
Volume 10
Received August 27, 2022
Accepted November 24, 2022
Published November 30, 2022