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A Study of Microstructure, Quasi-Static Response, Fatigue, Deformation and Fracture Behavior of High Strength Alloy Steels

Kannan, Manigandan
http://rave.ohiolink.edu/etdc/view?acc_num=akron1417552570

Abstract Details

2014, Doctor of Philosophy, University of Akron, Mechanical Engineering.
The history of steel dates back to the 17th century and has been instrumental in the betterment of every aspect of our lives ever since, from the pin that holds the paper together to the Automobile that takes us to our destination steel touches everyone every day. Path breaking improvements in manufacturing techniques, access to advanced machinery and understanding of factors like heat treatment, corrosion resistance have aided in the advancement in the properties of steel in the last few years. In this dissertation document, the results of a study aimed at the influence of alloy chemistry, processing and influence of the quasi static and fatigue behavior of seven alloy steels is discussed. The microstructure of the as-received steel was examined and characterized for the nature and morphology of the grains and the presence of other intrinsic features in the microstructure. The tensile, cyclic fatigue and bending fatigue tests were done on a fully automated closed-loop servo-hydraulic test machine at room temperature. The failed samples of high strength steels were examined in a scanning electron microscope for understanding the fracture behavior, especially the nature of loading be it quasi static , cyclic fatigue or bending fatigue . The quasi static and cyclic fatigue fracture behavior of the steels examined coupled with various factors contributing to failure are briefly discussed in light of the conjoint and mutually interactive influences of intrinsic microstructural effects, nature of loading, and stress (load)-deformation-microstructural interactions.
T.S Srivatsan, Dr. (Advisor)
G Morscher, Dr. (Committee Member)
RM Shemenski, Dr. (Committee Member)
Craig Menzemer, Dr. (Committee Member)
Gary Doll, Dr. (Committee Member)
Kevin Kreider, Dr. (Committee Member)
361 p.
Materials Science; Mechanical Engineering; Metallurgy

Recommended Citations

Citations

  • Kannan, M. (2014). A Study of Microstructure, Quasi-Static Response, Fatigue, Deformation and Fracture Behavior of High Strength Alloy Steels [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1417552570

    APA Style (7th edition)

  • Kannan, Manigandan. A Study of Microstructure, Quasi-Static Response, Fatigue, Deformation and Fracture Behavior of High Strength Alloy Steels . 2014. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1417552570.

    MLA Style (8th edition)

  • Kannan, Manigandan. "A Study of Microstructure, Quasi-Static Response, Fatigue, Deformation and Fracture Behavior of High Strength Alloy Steels ." Doctoral dissertation, University of Akron, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1417552570

    Chicago Manual of Style (17th edition)

akron1417552570
581
© 2014, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.