Delta Ferrite Formation in Austenitic Stainless Steel Castings

Angelo Fernando Padilha; Caio Fazzioli Tavares; Marcelo Aquino Martorano

doi:10.4028/www.scientific.net/MSF.730-732.733

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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Delta Ferrite Formation in Austenitic Stainless...

Delta Ferrite Formation in Austenitic Stainless Steel Castings

Abstract:

The effects of chemical composition and cooling rate on the delta ferrite formation in austenitic stainless steels have been investigated. Ferrite fractions measured by a magnetic method were in the range of 0 to 12% and were compared with those calculated by empirical formulas available in the literature. The delta ferrite formation (amount and distribution) was strongly affected by the steel chemical composition, but less affected by the cooling rate. Among several formulas used to calculate the amount of delta ferrite, the best agreement was obtained with those proposed independently by Schneider and Schoefer, the latter being recommended in the ASTM 800 standard.

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Periodical:

Materials Science Forum (Volumes 730-732)

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733-738

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.733

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Online since:

November 2012

Authors:

Angelo Fernando Padilha, Caio Fazzioli Tavares, Marcelo Aquino Martorano

Keywords:

Austenitic Stainless Steel, Delta Ferrite, Microstructure, Solidification

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References

[1] A. F. Padilha and P. R. Rios, Decomposition of austenite in austenitic stainless steels, ISIJ International 42 (2002) 325 - 337.

DOI: 10.2355/isijinternational.42.325

Google Scholar

[2] A. L. Schaeffler, Selection of austenitic electrodes for welding dissimilar metals, Welding Journal Res. Suppl. 26 (1947) 603s - 620s.

Google Scholar

[3] A. L. Schaeffler, Constitution diagram for stainless steel weld metal, Metal Progress 56 (1949) 680 - 680B.

Google Scholar

[4] W. T. DeLong, Ferrite in austenitic stainless steel weld metal, Welding Journal Res. Suppl. 53 (1974) 273s – 286s.

Google Scholar

[5] R. H. Espy, Weldability of nitrogen-strengthened stainless steels, Welding Journal Res. Suppl. 61 (1982) 149s - 156s.

Google Scholar

[6] ASTM 800/A 800M-01, Standard practice for steel casting, austenitic alloy, estimating ferrite content thereof, American Society for Testing and Material.

DOI: 10.1520/a0800_a0800m-10

Google Scholar

[7] T. Yamada, S. Okano and H. Kuwano, Mechanical property and microstructural change by thermal aging of SCS14A cast duplex stainless steel, J. Nucl. Mater. 350 (2006) 47 - 55.

DOI: 10.1016/j.jnucmat.2005.11.008

Google Scholar

[8] A. F. Padilha, D. M. Escriba, E. Materna-Morris, M. Rieth and M. Klimenkov, Precipitation in AISI 316L(N) during creep tests at 550 and 600 ºC up to 10 years, J. Nucl. Mater. 362 (2007) 132 - 138.

DOI: 10.1016/j.jnucmat.2006.12.027

Google Scholar

[9] G. El Nayal and J. Beech, Relationship between composition, impurity content, cooling rate, and solidification in austenitic stainless-steels, Mater. Sci. Tech. 2 (1986) 603 - 610.

DOI: 10.1179/mst.1986.2.6.603

Google Scholar

[10] N. Suutala and T. Moisio, Use of chromium and nickel equivalents in considering solidification phenomena in austenitic stainless steels, In: Solidification Technology in the Foundry and Cast House, The Metals Society, Coventry (1980) 310 - 314.

Google Scholar

[11] A guide to the solidification of steels, Jernkontoret, Stockholm (1977) 91-101.

Google Scholar