Effect of Strain Induced Martensite for 304M2 Austenitic Stainless Steel Wire

Abstract:

The impact of deformation and strain rate on the strain induced martensite (SIM) from 304M2 austenitic stainless steel was studied by using X-Ray diffraction, transmission electron microscopy. The results indicate that 304M2 is easy to have SIM because of the chemical component and microstructural characteristic. The amount of SIM has great relationship with the deformation and strain rate. It is found that the amount of SIM is reduced during high speed deformation. The obvious SIM can be observed with higher deformation, but the growth rate slows down. When the deformation rates are 8.3%, 55.0% and 67.3%, the contents of martensite are 6.55%, 15.35% and 16.21%, respectively. Compared with the slow stretching, the quick stretching leads to less martensite transformation. Moreover, the elongation of the specimens decreases. At the stable deformation stage, the temperature increases are 72.8 and 91.9℃, respectively, when the strain rates are 2×10^-2s^-1 and 5×10^-4s^-1. Therefore, the martensitic transformation and the deformation behavior of the austenitic stainless are affected by heating.

• Periodical: Materials Science Forum (Volume 788)
• Pages: 357-361
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.788.357
• Online since: April 2014
• Authors: Yi Su Jia, Ren Bo Song*, Yu Pei, Yang Xu, Jian Xiang Hu
• Keywords: 304M2 Steel, Austenitic Stainless Steel Wire, Deformation, Strain Induced Martensite, Strain Rate

References

[1] M. Jafarzadegan,A. Abdollah-zadeh,A.H. Feng,T. Saeid,J. Shen,H. Assadi. Microstructure and Mechanical Properties of a Dissimilar Friction Stir Weld between Austenitic Stainless Steel and Low Carbon Steel. Journal of Materials Science & Technology,2013,294: 29, 367-372.

DOI: 10.1016/j.jmst.2013.02.008

[2] Philipp Seemann,Sabine Kurz,Paul Gümpel. Martensite formation in a new manganese alloyed metastable austenitic steel (AISI 200-series). Journal of Alloys and Compounds,2012.

DOI: 10.1016/j.jallcom.2012.04.025

[3] J. Guimarães,P. Rios. Microstructural Analysis of the Martensite Volume Fraction. Metallurgical and Materials Transactions A,2013,441:147-151.

DOI: 10.1007/s11661-012-1506-9

[4] HU Gang. Deformation Induced Martensite Transformation and its Magnetic Memory Effect of Austenitic 304 Stainless Steel. Nondestructive Testing,2008,04:216-219.

[5] Lichtenfeld J A,Mataya M C,Tyne C V.Effect of strainrate on stress-stress behavior of alloy 309&304L austenit-ic stainless steel. Metall.Mater.Trans.A . 2006.

DOI: 10.1007/s11661-006-0160-5

[6] Talonen J, Nenonen P, Pape G, et al. Effect of strain rate on the strain-induced γ→α`martensite transformation and mechanical properties of austenitic stainless steels. Metallurgical and Materials Transactions . 2005.

DOI: 10.1007/s11661-005-0313-y

[7] Wang Yucheng. Martensitic Transformation and Microstructure in Fusion Zone of Dissimilar Steel Welded Joint. Transactions of The China Welding Institution, 1999,03:147-152.

[8] Liu Wei. Effect of srtain rate on strain induced α`martensite transformation and mechanical properties of austenitic stainless steels. Acta Metallurgica Sinica, 2009,03:285-291.

[9] Sinclair C W, Hoagland R G. Acta Mater, 2008:56:4160.