M. Garbiak, Materials for Reformer Furnace Tubes. History of evolution, Arch. Foundry Eng, vol.11, pp.47-52, 2011.

T. Sourmail, Precipitation in creep resistant austenitic steels, Mater. Sci. Technol, vol.17, pp.1-14, 2001.

L. H. De-almeida, A. F. Ribeiro, and I. L. May, Mater. Charact, vol.49, pp.219-229, 2002.

I. C. Silva, J. M. Rebello, A. C. Bruno, P. J. Jacques, B. Nysten et al., Structural and magnetic characterization of a carburized cast austenitic steel, Scripta Materialia, vol.59, pp.1010-1013, 2008.

M. H. Lewis and B. Hattersley, Acta Metall, vol.13, pp.1159-1168, 1965.

B. Piekarski, Effect of Nb and Ti additions on microstructure, and identification of precipitates in stabilized Ni-Cr cast austenitic steels, Materials Characterization, vol.47, pp.181-186, 2001.

S. Shi and J. C. Lipold, Microstructure evolution during service exposure of two cast, heat-resisting stainless steels -HP-Nb modified and 20-32Nb, Materials Characterization, vol.59, pp.1029-1040, 2008.

M. Mostafaei, M. Shamanian, A. Saatchi, H. Purmohamad, M. Amini et al., Effect of aging temperature on structural evolution of HP-Nb heat resistant steel, International Journal of Iron & Steel Society of Iran, vol.6, pp.30-33, 2009.

F. Abe, T. Kern, and R. Viswanathan, Creep-Resistant Steels -1 st Edition, 2008.

S. Borjali, H. Saeed-reza-allahkaram, and . Khosravi, Effects of working temperature and carbon diffusion on the microstructure of high pressure heat-resistant stainless steel tubes used in pyrolysis furnaces during service condition, Materials & Design, vol.34, pp.65-73, 2012.

L. Henrique-de-almeida, A. Freitas-ribeiro, and I. Le, Microstructural characterization of modified 25Cr-35Ni centrifugally cast steel furnace tubes, Materials Characterization, vol.49, pp.219-229, 2002.

G. Verdier and F. Carpentier, Consider new materials for ethylene furnace applications, Hydrocarbon processing, pp.61-62, 2011.

A. Steckmeyer, B. Fournier, H. Chasselin, and C. Mougel, Micro-alloyed steel: new standard for reformer tubes, Hydrocarbon processing, pp.61-66, 2014.

F. Decultieux and G. Verdier, Look at how to reduce down reformed tube wall thickness a step further, Hydrocarbon Engineering, 2011.

F. Decultieux and G. Verdier, A new standard of alloy, Hydrocarbon Engineering, pp.89-92, 2009.