Work Hardening and Machinability of TWIP Steels

Abdul, Aseem (2013). Work Hardening and Machinability of TWIP Steels Honours Thesis, School of Engineering, The University of Queensland.

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Author Abdul, Aseem
Thesis Title Work Hardening and Machinability of TWIP Steels
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2013-01-01
Thesis type Honours Thesis
Supervisor Han Huang
Haiwei Chang
Total pages 48
Collection year 2013
Language eng
Subjects 0913 Mechanical Engineering
Formatted abstract
A significant increase in the research activity related to high manganese twinning induced plasticity (TWIP) steels has occurred during the past ten years, motivated by the breakthrough in its combination of strength and ductility. This researches were done to aid in the understanding of the mechanism of the alloy especially in terms of its work hardening and machinability properties. The main purpose of the thesis is to fill the knowledge gap present right now which hinders the wide application of TWIP steels in various industries.

In this report, a literature review of its deformation mechanisms, factors affecting those mechanisms and the machinability study is compiled from previous works done so far. This first part would help the reader to understand the remarkable mechanisms involved with TWIP steel. The second part of the report includes the findings from a nanoindentation experiment done on six steel samples of different compositions. Of our interest in the experiment is how different variables would affect the mechanical properties of the steel such as its Young’s modulus and hardness. Some of the factors being considered are the composition of the steel, loading rate, surface conditions and the indentation size. The load-displacement (P-h) curve were also produced from the experimental data to study the steel’s deformation behavior. It was found that the contents of manganese (Mn) and aluminium (Al) does have an effect on the steel’s properties. The indentation size also plays a main role in the plastic deformation of the steel. The P-h curves produced showed discontinuities and elbow effects which helps us in observing the sample’s deformation behavior.

This report is hoped to be a launching point for future works needed for a number of topics involving TWIP steels. There is definitely much potential for the further study of this material and given the chance, the author would definitely want to pursue such opportunity to continue on what was done so far.
Keyword Work Hardening

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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Created: Fri, 08 May 2015, 01:54:22 EST by Asma Asrar Qureshi on behalf of Scholarly Communication and Digitisation Service