Matías Humberto Sosa Lissarrague, Alfredo Juan, César Lanz, Bruno La Rocca, Alberto Picasso


The HP40-Nb heat resistant alloy (35Ni-25Cr-Nb) was analysed by means of optical microscopy after aging treatments at 1073 and 1173 K for different times, in order to apply the classic Johnson – Mehl - Avrami – Kolmogorov kinetic model (JMAK), and thus calculate the activation energy of secondary M23C6 precipitation, which occurs during thermal aging. The relevance of this theoretical analysis is to infer the mechanism that controls the nucleation and growth of M23C6 secondary carbides, since the amount and morphology of these phase influences the mechanical properties as well as the corrosion resistance in service. After performing the kinetic analysis using the JMAK model, the activation energy was found to be 208 kJ/mol, which would indicate that the secondary precipitation in this alloy is controlled by the Cr-diffusion phenomenon along the austenitic matrix.


JMAK model; HP40-Nb; activation energy; M23C6 secondary carbide precipitation

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A. Picasso, C. Lanz, M. Sosa Lissarrague, A. Garófoli: Journal of Minerals and Materials Characterization and Engineering, Vol. 4, 2016, p. 48-61,

R. Song, S. Wu: Engineering Failure Analysis, Vol. 88, 2018, p. 63-72,

I. Sustaita Torres et al.: Materials Chemistry and Physics, Vol. 133, 2012, p. 1018-1023,

A. Reihani, R. Derakhshandeh Haghighi: Engineering Failure Analysis, Vol. 52, 2015, p. 97-108,

K. Buchaman, M. Kral, C. Bishop: Metallurgical and Materials Transactions A, Vol. 45, 2014, p. 3373–3385,

M. Attarian, A. Karimi Taheri: Materials Science & Engineering A, Vol. 659, 2016, p. 104-118,

MR. Andrade, C. Bolfarini, LAM. Ferreira, CD. Souza Filho, LHC. Bonazzi: Materials Science & Engineering A, Vol. 636, 2015, p. 48-52,

CJ. Liu, Y. Chen: Materials and Design, Vol. 32, 2011, p. 2507-2512,

MH. Sosa Lissarrague, S. Limandri, F. Prado, AC. Picasso: Metallography, Microstructure, and Analysis, Vol. 7, 2018, No. 3, p. 356-362,

MH. Sosa Lissarrague, A. Sepúlveda Buitrago, A. Picasso: Acta Metallurgica Slovaca, Vol. 25, 2019, No. 3, p. 180-185,

J. Guo, T. Cao, C. Cheng, X. Meng, J. Zhao: Microscopy and Microanalysis, Vol. 24, 2018, p. 478-487,

AR. Andrade et al.: Materials Science & Engineering A, Vol. 628, 2015, p. 176-180,

F. Tancret, J. Laigo, J. Furtado: Materials Science and Technology, Vol. 35, 2019, No. 3, p. 1924-1931,

IA. Sustaita Torres, S. Haro Rodriguez, R. Colás: High Temperature Materials Proceedia, Vol. 37, 2018, No. 2, p.133-139,

R. Ortega Reyes, S. Haro Rodriguez, IA. Sustaita Torres, FA. Pérez González, R. Colás: Ingenierías, Vol. 22, 2019, No. 82, p. 22-32

G. Lothongkum, S. Ratanamahasakul, P. Wangyao: Acta Metallurgica Slovaca, Vol. 11, 2005, No. 1, p. 54-61

A. Baltušnikas, I. Lukošiūtė, V. Makarevičius, R. Kriūkienė, A. Grybėnas: Journal of Materials Engineering and Performance, Vol. 25, 2016, No. 5, p. 1945-1951,

R. Badji et al.: Materials Chemistry and Physics, Vol. 148, 2014, p. 664-672,

MJ. Starink: Journal of Materials Science, Vol. 36, 2001, No. 18, p. 4433-4441,

F. Liu, F. Sommer, C. Bos, EJ. Mittemeijer: International Materials Reviews, Vol. 52, 2007, No. 4, p. 193–212,

J. Xu, F. Liu, S. Song, K. Zhang: Journal of non-Crystalline solids, Vol. 356, 2010, p. 1236-1245,

ATW. Kempen, F. Sommer, EJ. Mittemeijer: Journal of Materials Science, Vol. 37, 2002, No. 7, p. 1321-1332,

W. Smith, J. Hashemi: Fundamentos de la ciencia e ingeniería de materiales, fifth ed., Mc-Graw Hill, Mexico, 2014



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