Evolution of crystalline orientations in the production of ferritic stainless steel

A Núñez Galindo,J F Almagro Bello,I Collado Garcia,D L Sales

doi:10.1088/1757-899x/891/1/012019

A Núñez Galindo, J F Almagro Bello + Show 2 more

Open Access

https://doi.org/10.1088/1757-899x/891/1/012019

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Abstract

Ferritic stainless steel EN 1.4016 is used in a wide range of applications, the most common ones related to sheet forming. Several problems in the post-processing of these steels relates to their texture and anisotropy. Therefore, it is necessary to know the mechanisms of texture formation in the subsequent stages of metal manufacturing processes. EBSD has been demonstrated as a successful characterisation technique for this purpose.It is known that during re-crystallisation of Fe-Cr steels, deviations from the desired γ-fibre texture promote a decrease of deep drawability. Additionally, α-fibre damages formability. Subsequent cold rolling and annealing can enhance the deep drawing properties of the steel sheet. In this research, a standard sample and a modified one with optimised settings as regard to chemical composition and manufacturing process, to improve the formability properties, are characterised.To analyse the preferred orientation and the type of main fibre present in the material, ODF and Aztec Reclassify Phase, to calculate the content of martensite, were used.

Highlights

Ferritic stainless steel, in comparison to austenitic one, is low-cost, price-stable and has good engineering properties
Due to the impact that crystallographic texture has on the anisotropy of material properties, it is necessary to know the mechanisms that are involved in the texture of these materials during its manufacturing routing [2,3,4,5,6,7,8,9,10]
Sub-grains are revealed in the basic composition material (0A) but not in the modified one (1C)

Summary

Introduction

In comparison to austenitic one, is low-cost, price-stable and has good engineering properties. Due to the impact that crystallographic texture has on the anisotropy of material properties, it is necessary to know the mechanisms that are involved in the texture of these materials during its manufacturing routing [2,3,4,5,6,7,8,9,10]. In this sense, deviations from the γ-fibre desired texture occur during re-crystallisation of Fe-Cr steels, and a large number of grains being oriented with their {111}-plane parallel to the sheet plane, promoting a decrease of deep drawability. The α-fibre texture component transforms in such a way that orientates parallel to rolling direction and {001}, damaging to formability [11,12,13,14,15,16,17,18,19,20]

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Conclusion