Skip to main content Accessibility help
×
Home

Reinforced Pores in Porous Steels Obtained with Matrix Soluble Space Holders

  • G.O. Neves (a1), G. Paz (a1), N. Araya (a1), C. Binder (a1) and A.N. Klein (a1)...

Abstract

This paper presents a novel way to obtain reinforced pores by the dissociation of mixed carbides during sintering. Porous materials have a wide range of applications such as dampeners, light structures, etc. But usually pores act as points of stress concentration and crack nucleation, harming the mechanical properties of these materials. Methods have been developed to control the shape and size of pores but, until now, there are no techniques that allow reinforcing the material around the pores. To address this, steels were prepared by adding 1, 3 and 5 wt.% of Mo1.5Cr0.5C mixed carbide particles to a iron matrix by metal injection moulding. The results showed that during sintering, the dissociation of the carbide followed by the dissolution of the elements in the matrix generated rounded secondary pores with a reinforced vicinity, which increased the mechanical strength of the materials. The presence of rounded pores encircled by an enriched vicinity can allow the production of porous materials with exceptional fatigue strength and fracture toughness.

Copyright

Corresponding author

References

Hide All
[1]LIU, P.S. and , C. G.F, POROUS MATERIALS Processing and Applications, 1st ed. (Butterworth-Heinemann, Oxford, 2014).
[2]Lowell, S., Shields, J.E., Thomas, M.A., and Thommes, M., Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density (Springer Netherlands, Dordrecht, 2004).
[3]Chi, I.S., Bux, S.K., Bridgewater, M.M., Star, K.E., Firdosy, S., Ravi, V., and Fleurial, J.-P., MRS Adv. 1, 1169 (2016).
[4]Gomes, M.A., Wronski, A.S., and Wright, C.S., Int. J. Fract. 83, 207 (1997).
[5]Hadrboletz, A. and Weiss, B., Int. Mater. Rev. 42, 1 (1997).
[6]Chawla, N. and Deng, X., Mater. Sci. Eng. A 390, 98 (2005).
[7]Danninger, H., Xu, C., Khatibi, G., Weiss, B., and Lindqvist, B., Powder Metall. 55, 378 (2012).
[8]Banhart, J., Prog. Mater. Sci. 46, 559 (2001).
[9]Baumgärtner, F., Duarte, I., and Banhart, J., Adv. Eng. Mater. 2, 168 (2000).
[10]Lefebvre, L.-P., Banhart, J., and Dunand, D.C., Adv. Eng. Mater. 10, 775 (2008).
[11]Shu, Y., Suzuki, A., Takata, N., and Kobashi, M., MRS Adv. 4, 1515 (2019).
[12]GERMAN, R.M., Powder Metallurgy Of Iron And Steel (1998).
[13]Binder, C., Bendo, T., Pereira, R. V., Hammes, G., de Mello, J.D.B., and Klein, A.N., Powder Metall. 58, 384 (2016).
[14]Binder, C., Bendo, T., Hammes, G., Neves, G.O., Binder, R., de Mello, J.D.B., and Klein, A.N., Carbon N. Y. 124, 685 (2017).
[15]Klein, A.N., Cardoso, R.P., Pavanati, H.C., Binder, C., Maliska, A.M., Hammes, G., Fusao, D., Seeber, A., Brunatto, S.F., and Muzart, J.L.R., Plasma Sci. Technol. 15, 70 (2013).
[16]De Mello, J.D.B., Binder, C., Binder, R., and Klein, A.N., Wear 271, 1862 (2011).
[17]Knepfler, C. A., Faber, K.T., Weertman, J., Olson, G.B., Hubbard, C.R., Cavin, O.B., and Packen, N., J. Alloys Compd. 248, 139 (1997).

Keywords

Reinforced Pores in Porous Steels Obtained with Matrix Soluble Space Holders

  • G.O. Neves (a1), G. Paz (a1), N. Araya (a1), C. Binder (a1) and A.N. Klein (a1)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed