Influence of Carbon Content and Deformation Temperature on Ultra-Grain Refinement of Plain Carbon Steels by Means of Torsion Test

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概要

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• The effect of carbon content and deformation temperature on ultra-grain refinement of two plain carbon steels was studied. The steels samples were severely deformed by means of warm torsion tests. For both steels, the final microstructure consisted of ultrafine ferrite grains and small dispersed cementite particles depend on the test temperature. Increase in carbon content led to a decrease in the average ferrite grain size due to the presence of a higher volume fraction of cementite particles. Increasing in deformation temperature led to an increase in ferrite grain size. In addition, a critical strain for ultra grain refinement was reached for both steels. This critical deformation represents a minimum accumulated equivalent strain beyond which further significant grain size refinement is not more achievable. The higher the C content, the smaller this critical deformation was.

著者

• CALADO Welbert

  Department of Metallurgical and Materials Engineering, Universidade Federal de Minas Gerais

• Barbosa Ronaldo

  Department Of Metallurgical And Materials Engineering Federal University Of Minas Gerais

• Calado Welbert

  Department Of Metallurgical And Materials Engineering Federal University Of Minas Gerais

関連論文

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• Effects of Dynamic Strain Aging on High Temperature Mechanical Proprieties for a Structural Steel Containing Mo and Nb
• Ultra Grain Refinement in a Plain Carbon Steel by Means of Warm Torsion Testing
• Influence of Carbon Content and Deformation Temperature on Ultra-Grain Refinement of Plain Carbon Steels by Means of Torsion Test

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