Processing of Submicron Grained Microstructures and Enhanced Mechanical Properties by Cold-Rolling and Reversion Annealing of Metastable Austenitic Stainless Steels

Mahesh Chandra Somani; L. Pentti Karjalainen; Antero Kyröläinen; Tero Taulavuori

doi:10.4028/www.scientific.net/MSF.539-543.4875

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HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Processing of Submicron Grained Microstructures...

Processing of Submicron Grained Microstructures and Enhanced Mechanical Properties by Cold-Rolling and Reversion Annealing of Metastable Austenitic Stainless Steels

Abstract:

The effects of chemical composition, cold rolling and subsequent annealing parameters on the reversion of strain-induced martensite to austenite were investigated in three experimental Mn and Si-free Cr-Ni austenitic stainless steels and two commercial Type 301 and Type 301LN grades by optical and electron microscopy, X-ray diffraction and magnetic measurements. Hardness and tensile tests were performed to determine the mechanical properties achieved. In cold rolling, completely martensitic structure could be obtained in the experimental heats, but only partially in 301 and 301LN grades at reasonable reductions. Upon annealing, in 301LN the reversion took place by the nucleation and growth mechanism, and submicron austenite grains were formed within a few seconds at temperatures above 700°C. In the other steels, reversion took place by the shear mechanism, and ultra-fine grains were formed by the recrystallization of austenite at temperatures of 900°C or above. Partial reversion resulted in an excellent combination of yield strength and elongation in 301LN, and also in 301 such ones were attained in the reverted structure even before any profound formation of submicron grains.

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

4875-4880

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.4875

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Online since:

March 2007

Authors:

Mahesh Chandra Somani, L. Pentti Karjalainen, Antero Kyröläinen, Tero Taulavuori

Keywords:

Annealing, Cold Rolling, Ductility, Grain Size, Martensite, Stainless Steel (SS), Strength

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References

[1] European Commission: The Strategic Research Agenda of the European Steel Technology Platform (ESTEP, Belgium 2005), p.49.

Google Scholar

[2] A. Kyröläinen: Outokumpu Stainless Oy, Tornio, Finland, process data (2005).

Google Scholar

[3] M. Buccioni, L. Alleva and M. Barteri: Proc. The 5th European Stainless Steel Science and Market Congress (Spain 2005), p.31.

Google Scholar

[4] Y. Ma, J-E. Jin and Y-K. Lee: Scripta Mater. Vol. 52 (2005), p.1311.

Google Scholar

[5] K. Tomimura, S. Takaki and Y. Tokunaga: ISIJ Intern. Vol. 31 (1991), p.1431.

Google Scholar

[6] S. Takaki, K. Tomimura and S. Ueda: ISIJ Intern. Vol. 34 (1994), p.522.

Google Scholar

[7] M. Somani, P. Karjalainen, M. Koljonen, S. Rajasekhara, P. Ferreira, A. Kyröläinen, T. Taulavuori and P. Aspegren: Intern. Symp. on Ultrafine Grained Structures 2005 (ISUGS 2005), (China 2005), p.537.

DOI: 10.1557/proc-0903-z05-40

Google Scholar

[8] M.C. Somani, L.P. Karjalainen, M. Koljonen, P. Aspegren, T. Taulavuori and A. Kyröläinen: Proc. The 5th European Stainless Steel Science and Market Congress (Spain 2005), p.37.

Google Scholar

[9] K. Nohara, Y. Ono and N.J. Ohashi: Iron Steel Inst. Jpn. Vol. 63 (1977), p.772.

Google Scholar

[10] S. Rajasekhara, M.C. Somani, L.P. Karjalainen, A. Kyröläinen and P. Ferreira: 2005 MRS Fall Meeting (USA 2005).

Google Scholar

[11] X.H. Chen, J. Lu, L. Lu and K. Lu: Scripta Mater. Vol. 52 (2005), p.1039.

Google Scholar