Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties

M. E. Cura; R. Ritasalo; U. Kanerva; J. Syrén; J. Oksanen; J. Lotta; T. Suhonen; J. Lagerbom; O. Söderberg; E. Turunen; S. P. Hannula

Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties

M. E. Cura, R. Ritasalo, U. Kanerva, J. Syrén, J. Oksanen, J. Lotta, T. Suhonen, J. Lagerbom, O. Söderberg, E. Turunen, S. P. Hannula

Department of Chemistry and Materials Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Abstract

TiC-Ultimet® powders were prepared with Ultimet® (54Co-26Cr-9Ni-5Mo-3Fe-2W) contents of 12, 25, and 40 wt%, by Spex ball milling under argon atmosphere. They were compacted with pulsed electric current sintering (1473-1548 K, 5-8 min, 50 MPa). Density of the samples (Ø20, Ø25, Ø40 mm) was studied by Archimedes method. Microstructures were analyzed using optical microscopy, SEM, and XRD. Mechanical properties were studied with instrumented indentation tests. Fracture toughness was evaluated by determining K_IC in HV30 tests. The critical crack initiation load (P_cr) was measured by instrumented Vickers indentation test. Density of the samples increased with processing temperature. During processing Ultimet® was partially melted and distributed evenly among the carbides. This composite structure has high hardness of 2100-2400 HV1 independent of the Ultimet® content. Although these composites are quite brittle their ductility is better than that of pure TiC.

Original language	English
Title of host publication	Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
Publisher	European Powder Metallurgy Association (EPMA)
Volume	3
ISBN (Print)	9781899072194
Publication status	Published - 1 Jan 2010
MoE publication type	A4 Article in a conference publication
Event	World Powder Metallurgy Congress and Exhibition - Florence, Italy Duration: 10 Oct 2010 → 14 Oct 2010

Conference

Conference	World Powder Metallurgy Congress and Exhibition
Abbreviated title	World PM
Country/Territory	Italy
City	Florence
Period	10/10/2010 → 14/10/2010

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Cura, M. E., Ritasalo, R., Kanerva, U., Syrén, J., Oksanen, J., Lotta, J., Suhonen, T., Lagerbom, J., Söderberg, O., Turunen, E., & Hannula, S. P. (2010). Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties. In Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010 (Vol. 3). European Powder Metallurgy Association (EPMA).

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title = "Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties",

abstract = "TiC-Ultimet{\textregistered} powders were prepared with Ultimet{\textregistered} (54Co-26Cr-9Ni-5Mo-3Fe-2W) contents of 12, 25, and 40 wt%, by Spex ball milling under argon atmosphere. They were compacted with pulsed electric current sintering (1473-1548 K, 5-8 min, 50 MPa). Density of the samples ({\O}20, {\O}25, {\O}40 mm) was studied by Archimedes method. Microstructures were analyzed using optical microscopy, SEM, and XRD. Mechanical properties were studied with instrumented indentation tests. Fracture toughness was evaluated by determining KIC in HV30 tests. The critical crack initiation load (Pcr) was measured by instrumented Vickers indentation test. Density of the samples increased with processing temperature. During processing Ultimet{\textregistered} was partially melted and distributed evenly among the carbides. This composite structure has high hardness of 2100-2400 HV1 independent of the Ultimet{\textregistered} content. Although these composites are quite brittle their ductility is better than that of pure TiC.",

author = "Cura, {M. E.} and R. Ritasalo and U. Kanerva and J. Syr{\'e}n and J. Oksanen and J. Lotta and T. Suhonen and J. Lagerbom and O. S{\"o}derberg and E. Turunen and Hannula, {S. P.}",

year = "2010",

month = jan,

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language = "English",

isbn = "9781899072194",

volume = "3",

booktitle = "Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010",

publisher = "European Powder Metallurgy Association (EPMA)",

address = "Belgium",

note = "World Powder Metallurgy Congress and Exhibition, World PM ; Conference date: 10-10-2010 Through 14-10-2010",

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Cura, ME, Ritasalo, R, Kanerva, U, Syrén, J, Oksanen, J, Lotta, J, Suhonen, T, Lagerbom, J, Söderberg, O, Turunen, E & Hannula, SP 2010, Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties. in Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. vol. 3, European Powder Metallurgy Association (EPMA), World Powder Metallurgy Congress and Exhibition, Florence, Italy, 10/10/2010.

Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties. / Cura, M. E.; Ritasalo, R.; Kanerva, U. et al.

Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010. Vol. 3 European Powder Metallurgy Association (EPMA), 2010.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties

AU - Cura, M. E.

AU - Ritasalo, R.

AU - Kanerva, U.

AU - Syrén, J.

AU - Oksanen, J.

AU - Lotta, J.

AU - Suhonen, T.

AU - Lagerbom, J.

AU - Söderberg, O.

AU - Turunen, E.

AU - Hannula, S. P.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - TiC-Ultimet® powders were prepared with Ultimet® (54Co-26Cr-9Ni-5Mo-3Fe-2W) contents of 12, 25, and 40 wt%, by Spex ball milling under argon atmosphere. They were compacted with pulsed electric current sintering (1473-1548 K, 5-8 min, 50 MPa). Density of the samples (Ø20, Ø25, Ø40 mm) was studied by Archimedes method. Microstructures were analyzed using optical microscopy, SEM, and XRD. Mechanical properties were studied with instrumented indentation tests. Fracture toughness was evaluated by determining KIC in HV30 tests. The critical crack initiation load (Pcr) was measured by instrumented Vickers indentation test. Density of the samples increased with processing temperature. During processing Ultimet® was partially melted and distributed evenly among the carbides. This composite structure has high hardness of 2100-2400 HV1 independent of the Ultimet® content. Although these composites are quite brittle their ductility is better than that of pure TiC.

AB - TiC-Ultimet® powders were prepared with Ultimet® (54Co-26Cr-9Ni-5Mo-3Fe-2W) contents of 12, 25, and 40 wt%, by Spex ball milling under argon atmosphere. They were compacted with pulsed electric current sintering (1473-1548 K, 5-8 min, 50 MPa). Density of the samples (Ø20, Ø25, Ø40 mm) was studied by Archimedes method. Microstructures were analyzed using optical microscopy, SEM, and XRD. Mechanical properties were studied with instrumented indentation tests. Fracture toughness was evaluated by determining KIC in HV30 tests. The critical crack initiation load (Pcr) was measured by instrumented Vickers indentation test. Density of the samples increased with processing temperature. During processing Ultimet® was partially melted and distributed evenly among the carbides. This composite structure has high hardness of 2100-2400 HV1 independent of the Ultimet® content. Although these composites are quite brittle their ductility is better than that of pure TiC.

UR - http://www.scopus.com/inward/record.url?scp=84902128823&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84902128823

SN - 9781899072194

VL - 3

BT - Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010

PB - European Powder Metallurgy Association (EPMA)

T2 - World Powder Metallurgy Congress and Exhibition

Y2 - 10 October 2010 through 14 October 2010

ER -

Pulsed electric current sintering of TiC-Ultimet powders and effect of binder content on microstructure and mechanical properties

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