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

Open Access

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

    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

Abstract

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: https://journals.stmjournals.com/jopc/article=2022/view=96896

Full Text PDF Download

Browse Figures

References

1. Celik MB, Özdalyan B, Alkan F. The use of pure methanol as fuel at high compression ratio in a single cylinder gasoline engine. Fuel. 2011; 90(4): 1591–98.
2. Papis K, Tunzini S, Menk W. Cast iron alloys for exhaust applications, 10th International Symposium on the Science and Processing of Cast Iron-SPCI10; 2014 Nov 11–13; Mardel plata, Argentina; 2014. 1–8.
3. Delprete C, Sesana R. Experimental characterization of a Si–Mo–Cr ductile cast iron. Mater Des. 2014; 57: 528–537.
4. Zeytin HK, Kubilay C, Aydin H, Ebrinc AA, Aydemir B. Effect of microstructure on exhaust manifold cracks produced from SiMo ductile iron. J Iron Steel Res, Int. 2009; 16(3): 32–36.
5. Chaengkham P, Srichandr P. Continuously cast ductile iron: Processing, structures, and properties. J Mater Process Technol. 2011; 211(8): 1372–78. doi: http://dx.doi.org/10.1016/ j.jmatprotec.2011.03.008
6. Minnebo P, Nilsson K-F, Blagoeva D. Tensile, Compression and Fracture Properties of Thick-Walled Ductile Cast Iron Components. J Mater Eng Perform. 2007; 16(1): 35–45. doi:10.1007/s11665-006-9005-z.
7. Bartosiewicz L, Singh I, Alberts F, Krause A, Putatunda S. The influence of chromium on mechanical properties of austempered ductile cast iron. J Mater Eng Perform. 1995; 4(1): 90–101.
8. Berdin C, Dong MJ, Prioul C, Local approach of damage and fracture toughness for nodular cast iron. Eng Fract Mech. 2001; 68(9): 1107–17. doi:https://doi.org/10.1016/S0013-7944(01)00010-8.
9. Callister Jr WD, Rethwisch DG. Callister’s materials science and engineering. 10th Edn. John Wiley & Sons; 2020.
10. Salehnejad MA, Mohammadi A, Rezaei M, Ahangari H. Cracking failure analysis of an engine exhaust manifold at high temperatures based on critical fracture toughness and FE simulation approach. Eng Fract Mech. 2019; 211: 125–36. doi: https://doi.org/10.1016/j.engfracmech. 2019.02.005
11. Hosdez J, Limodin N, Najjar D, Witz J, Charkaluk E, Osmond P, Forré A, Szmytka F. Fatigue crack growth in compacted and spheroidal graphite cast irons. Int J Fatigue. 2020; 131: 105319. https://doi.org/10.1016/j.ijfatigue.2019.105319.
12. Collini L, Moroni F, Pirondi A. Modeling the influence of stress triaxiality on the failure strain of nodular cast iron microstructures. Procedia Struct Integr. 2019; 18: 671–87. doi:https://doi.org/10.1016/j.prostr.2019.08.215.
13. Aranzabal J, Serramoglia G, Goria C, Rousiere D. Development of a new mixed (ferritic-ausferritic) ductile iron for automotive suspension parts. Int J Cast Met Res. 2003; 16(1–3): 185–90. doi:https://doi.org/10.1080/13640461.2003.11819580.
14. Tokunaga T, Kim Y-J, Era H. Effect of Nickel Content on Microstructural Evolution in Austempered Solution-Strengthened Ferritic Ductile Cast Iron. J Mater Eng Perform. 2019; 28(7): 4034–40. doi:https://doi.org/10.1007/s11665-019-04184-y.
15. Borsato T, Berto F, Ferro P, Carollo C. Effect of in-mould inoculant composition on microstructure and fatigue behaviour of heavy section ductile iron castings. Procedia Struct Integr. 2016; 2: 3150–3157. doi:http://dx.doi.org/10.1016/j.prostr.2016.06.393.
16. Kumar P, Prashant K. Elements of fracture mechanics. 9th Edn. Tata McGraw-Hill Education; 2009.


Conference Open Access Original Research
Volume 10
1
Received August 27, 2022
Accepted November 24, 2022
Published November 30, 2022