PhD Candidate

Mohammad Ali Mohtadi Bonab

My research focuses on hydrogen induced cracking (HIC) in pipeline steels. HIC in pipeline steels is recognized as the most important mode of damage in sour environment, produces catastrophic and unexpected failure and is a tremendous threat to the safety of the oilfield production and even the security of the national energy. The main objectives of my research are to find the HIC crack nucleation and propagation sites, evaluate a role of texture and grain boundary character distribution in crack growth and finally develop methods for evaluation of probability of crack nucleation and propagation in investigated pipeline steels.


Journal Publications


[1] M.A. Mohtadi-Bonab, J.A. Szpunar, S.S. Razavi-tousi, A comparative study of hydrogen induced cracking behavior in API 5L X60 and X70 pipeline steels, Engineering Failure Analysis 33 (2013) 163-75.

[2] M.A. Mohtadi-Bonab, J.A. Szpunar, S.S. Razavi-tousi, Hydrogen induced cracking susceptibility in different layers of a hot rolled X70 pipeline steel, International Journal of Hydrogen Energy 38 (2013) 13831-13841.

[3] M.A. Mohtadi-Bonab, J.A. Szpunar, R. Stankiewich, Evaluation of hydrogen induced cracking behavior of API X70 pipeline steel at different heat treatments, International Journal of Hydrogen Energy, 39 (2014) 6076-6088.

[4] Roohollah Jamaati, Mohammad Reza Toroghinejad, M.A. Mohtadi-Bonab, Hossein Edris, Jerzy A. Szpunar, Mohammad Reza Salmani, Comparison of microparticles and nanoparticles effects on deformation texture of steel-based composite and nanocomposite fabricated by the ARB process, Materials Science & Engineering A 607 (2014) 173187.

[5] Roohollah Jamaati, Mohammad Reza Toroghinejad, M.A. Mohtadi-Bonab, Hossein Edris, Jerzy A. Szpunar, Mohammad Reza Salmani, The effect of SiC nanoparticles on deformation texture of ARB-processed steel-based nanocomposite, Materials Characterization, 93 (2014) 150-162.

[6] S. Hassanifard, M.A.Mohtadi Bonab, Gh. Jabbari, Investigation of fatigue crack propagation in spot-welded joints based on fracture mechanics approach, Journal of material engineering and performance 22 (2013) 245250.

[7] M.A. Mohtadi-Bonab , M. Eskandari, J.A. Szpunar, Hydrogen induced cracking assessment in pipeline steels based on hydrogen permeation and crystallographic texture measurements, Under Review.

[8] M.A. Mohtadi-Bonab , J.A. Szpunar, R. Basu, M. Eskandari, The mechanism of failure by hydrogen induced cracking in an acidic environment for API 5L X70 pipeline steel, Under Review.

Conference Presentations


[1] M.A. Mohtadi-Bonab , J.A. Szpunar, Hydrogen induced crack nucleation and propagation in an API X70 Pipeline Steel, 26th Canadian Materials Science Conference, Saskatoon, June 1-4, 2014.

[2] R. Basu, J. Szpunar, M. Eskandari, M.A Mohtadi Bonab, Marforming: a novel method for grain refinement in Ni-Ti based shape memory alloys, 26th Canadian Materials Science Conference, Saskatoon, June 1-4, 2014.

Contact Details

Email: m.mohtadi@usask.ca