Project Info

Effect of microstructure on hydrogen induced cracking in sour service pipeline steels

Pipeline steels are subjected to sour service environments in conditions with high levels of hydrogen sulfide. Under these conditions, hydrogen ions are able to ingress into the steel pipeline and form internal cracks. It is generally thought as the strength of the steel increases, the susceptibility to this hydrogen induced cracking phenomenon also increases. However, if the effect of microstructure on hydrogen induced cracking could be understood, it is possible that higher strength steels could be adapted for sour service environments.

More Information

K. O. Findley, M. K. O’Brien & H. Nako (2015) Critical Assessment 17: Mechanisms of hydrogen induced cracking in pipeline steels, Materials Science and Technology, 31:14, 1673-1680, DOI: 10.1080/02670836.2015.1121017

Grand Engineering Challenge: Restore and improve urban infrastructure

Student Preparation

Qualifications

The student should have an interest in materials science and an enthusiasm to learn new techniques. They should also be enthusiastic about conducting research.

Time Commitment

10 hours per week, 40 hours per month during the school year

Skills/Techniques Gained

The student will learn to prepare samples and subsequently conduct electron backscatter diffraction (EBSD) on steel samples. They will also learn how to use the software for data analysis. As a result the student will learn basics of electron microscopy and diffraction. The student will also be involved in technical report writing and technical presentations for the Advanced Steel Processing and Products Research Center, which has biannual sponsor meetings that allow opportunities to present student research.

Mentoring Plan

Kip Findley will oversee my advisee, Mary O’Brien, who will take direct responsibility for the mentorship of the undergraduate fellow. She intends on working one on one with the study to encourage their understanding of conducting research from start to finish. This will include encouraging safety in the lab, a fundamental understanding of the science behind the techniques, and developing writing and presentation skills.