Structure-Property Relationships of an A36 Steel Alloy under Dynamic Loading Conditions

Author

Adam J. Mayatt

Issuing Body

Mississippi State University

Advisor

Horstemeyer, Mark F.

Committee Member

Rhee, Hongjoo

Committee Member

Li, Bin

Date of Degree

12-15-2012

Document Type

Graduate Thesis - Open Access

Major

Mechanical Engineering

Degree Name

Master of Science

College

James Worth Bagley College of Engineering

Department

Department of Mechanical Engineering

Abstract

Structure-property quantification of an A36 steel alloy was the focus of this study in order to calibrate and validate a plasticity-damage model. The microstructural parameters included grain size, particle size, particle number density, particle nearest neighbor distances, and percent of ferrite and pearlite. The mechanical property data focused on stress-strain behavior under different applied strain rates (0.001/s, 0.1/s, and 1000/s), different temperatures (293 K and 573 K), and different stress states (compression, tension, and torsion). Notch tension tests were also conducted to validate the plasticity-damage model. Also, failure of an A36 I-beam was examined in cyclic loads, and the crack growth rates were quantified in terms of fatigue striation data. Dynamic strain aging was observed in the stress-strain behavior giving rise to an important point that there exists a critical temperature for such behavior.

URI

https://hdl.handle.net/11668/19085

Comments

A36 steel alloy||low carbon steel||Dynamic loading||Dynamic strain aging||Hopkinson||High rate testing||Material characteristics||Facture surfaces||A36 hot rolled plate||Plasticity damage model||Chemical composition by weight percent

Recommended Citation

Mayatt, Adam J., "Structure-Property Relationships of an A36 Steel Alloy under Dynamic Loading Conditions" (2012). Theses and Dissertations. 4096.
https://scholarsjunction.msstate.edu/td/4096