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The Influence of Manganese on the Stacking Fault Energy and Deformation Mechanisms of the TWIP Steel

LU Jian-chong

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Abstract

The stacking fault energy of the Fe-XMn-3Si-3Al system alloys was calculated according to the thermodynamic model of stacking fault energy.The calculated results showed that the stacking fault energy of Fe-XMn-3Si-3Al system alloys increased with increasing manganese content.The influence of Manganese content on the deformation mechanisms,mechanical properties and microstructure of Fe-XMn-3Si-3Al system alloys was discussed based on above results.With the increasing of manganese content,the Fe-XMn-3Si-3Al system alloys show different deformation mechanisms from the TRIP effect turns to the TWIP effect.At the same time,the strength decreasing and the elongation increasing.

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What this paper is about

The stacking fault energy of the Fe-XMn-3Si-3Al system alloys was calculated according to the thermodynamic model of stacking fault energy.The calculated results showed that the stacking fault energy of Fe-XMn-3Si-3Al system alloys increased with increasing manganese content.The influence of Manganese content on the deformation mechanisms,mechanical properties and microstructure of Fe-XMn-3Si-3Al system alloys was discussed based on above results.With the increasing of manganese content,the Fe-XMn-3Si-3Al system alloys show different deformation mechanisms from the TRIP effect turns to the TWIP effect.At the same time,the strength decreasing and the elongation increasing.

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Available abstract

The stacking fault energy of the Fe-XMn-3Si-3Al system alloys was calculated according to the thermodynamic model of stacking fault energy.The calculated results showed that the stacking fault energy of Fe-XMn-3Si-3Al system alloys increased with increasing manganese content.The influence of Manganese content on the deformation mechanisms,mechanical properties and microstructure of Fe-XMn-3Si-3Al system alloys was discussed based on above results.With the increasing of manganese content,the Fe-XMn-3Si-3Al system alloys show different deformation mechanisms from the TRIP effect turns to the TWIP effect.At the same time,the strength decreasing and the elongation increasing.

Key concepts: Twip, Stacking-fault energy, Manganese, Materials science, Microstructure, Deformation (meteorology), Stacking, Metallurgy

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