ME 4133/6133 Mechanical Metallurgy

Effect of Strain Rate on Hardness in Metals


Effect of Strain Rate on Hardness in Metals



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In this literature review, the use of hardness testing to characterize the dynamic plasticity response of materials have been investigated. The typical strain rate and temperature response of metals and ceramics have been discussed. A review of commonly available hardness testing methods and their appropriate use cases in accordance with related standards have been completed, and the use of some testing methods on the high strain rate characterization of materials have been done. It was found that the common relation of holds true for dynamic hardness values as well as for static hardness values. Using this relationship, the dynamic plasticity response of materials can be properly mapped at different strain values. Additionally, a model which utilizes temperature and work hardening responses of metals is presented and was shown to agree well with observed experimental results. The materials that have been used for the testing are the 316 stainless steel, 2024 Al. And it has been found that 316 stainless steel is more sensitive to strain rate than 2024 Al, and thus the plastic zones change will be different.


Hardness, Strain Rate, Grain size, Plastic deformation, Plastic zones, Elastic zones, Elastic response.


Materials Science and Engineering | Mechanical Engineering | Metallurgy


James Worth Bagley College of Engineering


Department of Mechanical Engineering

Effect of Strain Rate on Hardness in Metals