Influence of Deformation Heat Treatment on the Ultra-Fine Structure of Austenitic Stainless Steel

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According to accommodate-state and big bulk 18-8 type austenitic stainless steel has the weakness of coarse-grained and low strength. Optical microscopy,electron microscopy and X-ray diffraction were used to analyze microstructure and grain size of austenitic stainless steel specimens after deformation heat treatment. The paper investigates the influence of recrystallization annealing on the ultra-fine structure of cold deformation austenitic stainless steel. The results show that austenitic stainless steel can produce deformation-induced martensite by cold rolling deformation, and that the content of martensite increases with deformation degree. During the annealing, ultra-fine grains can be obtained by the reversal transformation-induced martensite(M′→ γ ). After severe cold deformation, inside austenitic grains imported austenitic-martensite(γ /M) phase boundaries shall serve to add a great deal of forming nucleus location for recrystallization, to enhance forming nucleus ratio and refine grain. 1Cr18Ni9Ti austenitic stainless steel by severe cold deformation and recrystallization annealing can acquire ultra-fine grains.

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Periodical:

Materials Science Forum (Volumes 551-552)

Edited by:

K.F. Zhang

Pages:

421-425

Citation:

M. Wang and H. Z. Guo, "Influence of Deformation Heat Treatment on the Ultra-Fine Structure of Austenitic Stainless Steel", Materials Science Forum, Vols. 551-552, pp. 421-425, 2007

Online since:

July 2007

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$41.00

[1] N. Orhan, T.I. Khan and M. Eroglu. Diffusion Bonding of a Microduplex Stainless Steel to Ti-6Al-4V. Sciripta Materialia. Vol. 45(2001), p.441.

DOI: https://doi.org/10.1016/s1359-6462(01)01041-7

[2] M. Ghosh, S. Chatterjee. Diffusion Bonded Transition Joints of Titanium to Stainless Steel with Improved Properties. Materials Science and Engineering A. Vol 358(2003), p.152.

DOI: https://doi.org/10.1016/s0921-5093(03)00298-3

[3] T. Maaihara. The Superplastic Stainless Steel. Metal Materials of Abroad, Vol. 5(1991), p.9.

[4] ZHANG Dongfeng (interprete). Ausform Austenitic Stainless Steel Obtaining Ultra-Fine Structure. Heat Treatment of Metals of Abroad, , Vol. 15 (1994), p.27.

[5] CHEN He, JING Qin,WU Haoquan. Influence of Heat Treatment on the Grains of Cold Worked Austenitic Stainless Steel. Physics Testing, Vol. 4(1995), p.8.

[6] XIAO Jimei. Metallurgical Problems of Stainless Steel. Beijing: Metallurgy Industry Publish House, (1983).

[7] YANG Gang, LIU Zhengdong, GONG Zhihua, et al. Microstructure Refining Technique of Austenitic Stainless Steel. Journal of Iron and Steel Research, Vol. 18(2006), p.32.