Influences of initial microstructures on martensitic transformation and textures during cold rolling and tensile mechanical properties in high manganese TRIP steel

Ma, Dandan; Yang, Ping; Gu, Xinfu; Cui, Fang

doi:10.1016/j.msea.2021.142147

Cited by 15 publications

(9 citation statements)

References 36 publications

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“…However, Padilha et al [25], testing AISI 304 austenitic steel after deformation by cold rolling, showed that ε'-martensite formed in steel but at low degrees of deformation up to 5% and then, with an increase in the degree of deformation, it was transformed into α'martensite. ε-martensite as an intermediate phase is also observed in high-manganese austenitic steels [16,17,47]. For the tested steel, there are no diffraction lines from the ε phase in the entire range of deformations of 5-80%, which confirms that the phase transformation in this steel occurs along the γ → α' path.…”

Section: Resultssupporting

confidence: 60%

The Influence of Cold Deformation and Annealing on Texture Changes in Austenitic Stainless Steel

Kowalska,

Witkowska

2024

Adv. Sci. Technol. Res. J.

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Austenitic stainless steels are widely used in industry, from heavy industry and power generation to precision mechanics and electronics, accounting for about 2/3 of the stainless steels produced. The stability of austenite influences the properties and behaviour of these steels during deformation and annealing. This paper presents the results of research into austenitic metastable phase X5CrNi1810 steel, which was subjected to cold rolling (in the range of 5 to 80%) and then annealing (at temperatures of 500-900 °C). The research focused mainly on changes in crystallographic texture parameters occurring during the analysed processes. It was found that the observed development of the deformation texture is complex due to the fact that several processes take place simultaneously. Namely, the deformation of austenite, the transformation of austenite into martensite, and the deformation of the resulting martensite. The texture of the deformed austenite was similar to the texture of the alloy type {112}<110>. After 80% deformation, the Goss-type {110}<001> texture component showed the highest intensity. The lack of {112}<111> orientation in the texture was due to the fact that this orientation changes to the {112}<110> martensite orientation as a result of the γ → α' phase transition. Annealing of the deformed steel at 500 °C led to an increase in the degree of texturing (sharpening of the texture), which was related to the improvement of the texture in this temperature range. Above 600 °C, the degree of texturing decreased, which is directly related to the α' → γ reverse transformation and the subsequent recrystallization process. Magnetic studies indicate an increasing proportion of the magnetic phase α' (martensite) together with an increasing degree of deformation. For deformation of 80%, the amount of magnetic phase reached a value of more than 33%. After annealing at a temperature of 800 °C, there is no martensite in the structure, which indicates that, in these heat treatment conditions, the complete reverse transformation of martensite into austenite has already taken place.

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Section: Resultssupporting

confidence: 60%

The Influence of Cold Deformation and Annealing on Texture Changes in Austenitic Stainless Steel

Kowalska,

Witkowska

2024

Adv. Sci. Technol. Res. J.

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“…Moreover, it is suggested that, apart from the type of plastic processing and the temperature and degree of deformation [27][28][29], the orientation and size of austenite grains may also influence the occurrence of the phase transformations induced by deformation (e.g., [5,30,31]). A very good example in this regard is the study by Ma et al [32,33]. The influence of the initial microstructure on the mechanical properties of high-manganese steel was investigated.…”

Section: Introductionmentioning

confidence: 99%

Complex Structural Effects in Deformed High-Manganese Steel

2021

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The research presented in this paper is part of a larger project concerning deformation behavior, microstructure and mechanical properties of high-manganese steels with different chemical compositions and processed under various conditions. The current investigation deals with the development of microstructure and crystallographic texture of Fe-21.2Mn-2.73Al-2.99Si steel deformed in tension until fracture at ambient temperature. The deformation process of the examined steel turned out to be complex and included not only dislocation slip and twinning but also strain induced phase transformations (γ → ε) and (γ → α′). The formation of ε-martensite with hexagonal structure was observed within the microstructure of the steel starting from the range of lower strains. With increasing deformation degree, the α′-martensite showing a cubic structure gradually began to form. Attempts have been made to explain the circumstances or conditions for the occurrence of the deformation mechanisms mentioned above and their impact on the mechanical properties. The obtained results indicate that the strength and plastic properties of the steel substantially exceed those of plain carbon steels. Since both, mechanical twinning and the strain-induced phase transformations took place during deformation, it seems that both types of deformation mechanisms contributed to an increase in the mechanical properties of the examined manganese steel.

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“…Non-uniform deformation on different grains results in textures. The main textures of high manganese steel after compression or rolling are Goss texture {011} 〈100〉 and Brass texture {011} 〈211〉 [11,17,18]. The texture would turn from Goss texture to Brass texture when the strain is 0.4 to 0.6 [19,20].…”

Section: Discussionmentioning

confidence: 99%

Study of work-hardening behavior of high manganese steel during compression

Pei

Zhang

Yang

et al. 2022

Mater. Res. Express

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High manganese steels are well used for their excellence hardening properties. In this study, we investigate the mechanical and responses of a high manganese steel at a compress condition. During compression deformation, twin crystal is first generated inside some of the grain with orientation advantage and then all of grains are twinned. Selective twinning on some grains leads to the formation of textural structures. When the plastic deformation is low, twins appear independently and throughout the grain. After the true strain is more than 0.5, the twins appear as many small parallel short bars. Dislocation density does not increase significantly at the beginning of plastic deformation but increase rapidly while the flow stress no longer increases. Simultaneously, the twinning and the increased density of dislocations lead to increasing hardness, with a maximum value of 630 HV at a true strain of 0.6, during plastic deformation.

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Influences of initial microstructures on martensitic transformation and textures during cold rolling and tensile mechanical properties in high manganese TRIP steel

Cited by 15 publications

References 36 publications

The Influence of Cold Deformation and Annealing on Texture Changes in Austenitic Stainless Steel

The Influence of Cold Deformation and Annealing on Texture Changes in Austenitic Stainless Steel

Complex Structural Effects in Deformed High-Manganese Steel

Study of work-hardening behavior of high manganese steel during compression

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