Ductile-to-Brittle Transition Behavior of High-Nitrogen 18Cr-10Mn-0.35N Austenitic Steels Containing Ni and Cu

Byoung Chul Hwang; Tae Ho Lee; Seong Jun Park; Chang Seok Oh; Sung Joon Kim

doi:10.4028/www.scientific.net/MSF.654-656.158

Paper Titles

Colored Metallography Study of Bainite Steel Used for High Speed Railway Crossing
p.142

Relationship between Particle Size and Martensitic Transformation in an Fe-30at%Ni Alloy
p.146

Spheroidization Behavior of Cementite in a High Carbon Steel
p.150

Influence of Silicon on the Spheroidization of Cementite in Hypereutectoid Bearing Steels
p.154

Ductile-to-Brittle Transition Behavior of High-Nitrogen 18Cr-10Mn-0.35N Austenitic Steels Containing Ni and Cu
p.158

Role of Microstructure in Susceptibility of X70 Pipeline Steel to Hydrogen Embrittlement
p.162

Microstructure and Tensile Properties of ODS Ferritic Steels Produced by Mechanical Alloying in Argon and Hydrogen Gas Environments
p.166

Effect of Grain Boundary Serration on the Tensile Properties of the Super 304H Heat Resistant Austenitic Stainless Steel
p.170

Tensile Deformation Behavior of Tempered Martensitic Steels Produced in CGL Lines
p.174

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Ductile-to-Brittle Transition Behavior of...

Ductile-to-Brittle Transition Behavior of High-Nitrogen 18Cr-10Mn-0.35N Austenitic Steels Containing Ni and Cu

Abstract:

Ductile-to-brittle transition behavior of high-nitrogen 18Cr-10Mn-0.35N austenitic steels containing Ni and Cu was investigated by means of Charpy impact test and fractographic analysis. The commonly observed fracture mode of the specimens tested at -196 oC was transgranular cleavage-like brittle with flat facets occurring along {111} crystallographic planes, thereby leading to the occurrence of ductile-to-brittle transition. For all the steels investigated in the present study, the ductile-to-brittle transition temperature (DBTT) measured from Charpy impact tests was much higher by 90 to 135 oC than that predicted by empirical equation strongly depending on N content. The combined addition of Ni and Cu enabled the 18Cr-10Mn-0.35N steels to have the lowest DBTT, which could be explained by relatively high austenite stability and favorable effect of Cu as well as the absence of delta-ferrite.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

158-161

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.654-656.158

Citation:

Cite this paper

Online since:

June 2010

Authors:

Byoung Chul Hwang, Tae Ho Lee, Seong Jun Park, Chang Seok Oh, Sung Joon Kim

Keywords:

Austenite Stability, Cleavage-Like Brittle Fracture, Copper (Cu), Ductile-to-Brittle Transition, High Nitrogen Austenitic Steel, Nickel

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] N. Akdut, B.C. De Cooman, J. Foct: Proc 7th Int Conf High Nitrogen Steels, HNS 2004, Ostend, Belgium: GRIPS media (2004).

Google Scholar

[2] P.J. Uggowitzer, R. Magdowski, M.O. Speidel: ISIJ Int. Vol. 36 (1996), p.901.

Google Scholar

[3] M. Milititsky, D.K. Matlock, A. Regully, N. Dewispelaere, J. Penning, H. Hänninen: Mater. Sci. Eng. Vol. A496 (2008), p.189.

Google Scholar

[4] B. Hwang T-H. Lee, C-S. Oh, S-J. Kim: Proc 23rd Conf Advanced Structural Materials, Daejeon, Korea, The Korean Institute of Metals and Materials (2009), p.117.

Google Scholar

[5] Y. Tomota, Y. Xia, K. Inoue: Acta Mater. Vol. 46 (1998), p.1577.

Google Scholar

[6] D. Broek: Int. Met. Rev. Vol. 19 (1974), p.136.

Google Scholar