Effect of austenite deformation temperature on Nb clustering and precipitation in microalloyed steel

SCRIPTA MATERIALIA

卷:75

Article

Pereloma, E. V.^1,2  Kostryzhev, A. G.¹  AlShahrani, A.¹  Zhu, C.^3,4  Cairney, J. M.^3,4  Killmore, C. R.⁵  Ringer, S. P.^3,4 

[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, UOW Electron Microscopy Ctr, Wollongong, NSW 2519, Australia

[3] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia

[4] Univ Sydney, Sch Aerosp & Mechatron Engn, Sydney, NSW 2006, Australia

[5] BlueScope Steel Ltd, Port Kembla, NSW 2500, Australia

关键词: Nb clustering;    Precipitation;    Steel;    Atom probe tomography;    Electron microscopy;   

DOI  :  10.1016/j.scriptamat.2013.11.026

来源: Elsevier

【 摘 要 】

The effect of thermomechanical processing conditions on Nb clustering and precipitation in both austenite and ferrite in a Nb-Ti microalloyed steel was studied using electron microscopy and atom probe tomography. A decrease in the deformation temperature increased the Nb-rich precipitation in austenite and decreased the extent of precipitation in ferrite. Microstructural mechanisms that explain this variation are discussed. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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