Characterization and properties of sintered WC–Co and WC–Ni–Fe hard metal alloys

Chang, Shih-Hsien; Chen, Songling

doi:10.1016/j.jallcom.2013.09.188

Cited by 134 publications

(51 citation statements)

References 16 publications

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“…The corrosive solvent used 3.5 wt% NaCl was maintained at room temperature. A scanning speed of 0.01 Vs -1 , initial potential of -2.0 V, and the final potential of 2.0 V were controlled [7]. The polarization curve was obtained by Corr-View software to analyze and compare the corrosion potential (E corr ), corrosion current (I corr ) and polarization resistance (R p ) of NbC-1, NbC-3 and NbC-5 sintered specimens.…”

Section: Methodsmentioning

confidence: 99%

“…Powder metallurgy (P/M) methods offer various types of materials with the objective of achieving higher strength, hardness and wear resistance for composite materials such as titanium-based alloys powders. Conventional P/M involves mixing the metal powders, compacting of the mixed powders into moulds and then sintering of the compact powders under the different atmospheres [6,7]. Furthermore, our previous study has shown that the combination of these elements in a Ti-8Mo-6Ni alloy has a good balance between mechanical properties and hot workability [2].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Microstructures, Mechanical Properties and Corrosion Behaviours of Ti-8Mo-6Ni Alloys Adding NbC PowdersviaVacuum Sintering Process

et al. 2017

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Abstract. In this study, the Ti-8Mo-6Ni alloys are subjected to add various amounts of NbC carbides as a strengthening phase after the sintering process. Meanwhile, the composite materials underwent a vacuum sintering process at different temperatures of 1175°C, 1225°C and 1275°C for 1 h, respectively. To evaluate the microstructure, mechanical properties and corrosion behaviors of the Ti-8Mo-6Ni alloys adding NbC via the vacuum sintering processes, tests on the relative density, hardness, transverse rupture strength (TRS), corrosion and microstructure inspections are performed using XRD and SEM, with the aim of improving the microstructure and properties of sintered Ti-8Mo-6Ni alloys. The experimental results showed that when 1 wt% of NbC carbides is added to the Ti-8Mo-6Ni alloys they possessed the optimal properties after sintering at 1275°C for 1 h. The sintering density increased to about 99.7%, the hardness is enhanced to 48.1 HRC and the TRS increased to 976 MPa. Meanwhile, the sintered composite materials possessed good corrosion resistance.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of the Microstructures, Mechanical Properties and Corrosion Behaviours of Ti-8Mo-6Ni Alloys Adding NbC PowdersviaVacuum Sintering Process

et al. 2017

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“…The literature indicates that decreasing the porosities and increasing the density of sintered materials effectively enhances plastic deformation resistance and hardness. 10,19) The results can be further compared with Figs. 3, 5, 6 and Fig.…”

Section: Methodsmentioning

confidence: 99%

“…7) Conventional P/M involves mixing the metal powders, compacting of the mixed powders into molds and then sintering of the compact powders under the different atmospheres. 9,10) One of the advantages of P/M compared to other methods is having better control on the microstructure, where better distribution of the reinforcements is possible in P/M compacts.…”

Section: Introductionmentioning

confidence: 99%

Change in Microstructure, Mechanical Strength and Corrosion Resistance of Ti-8Mo-xNi Alloys through Various Sintering Temperatures

et al. 2016

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In this study, three different powders are mixed and used to produce Ti-8Mo-xNi alloys in three different proportions: Ti-8Mo-4Ni, Ti8Mo-6Ni and Ti-8Mo-8Ni. The Ti-Mo-Ni alloys simultaneously undergo various vacuum sintering temperatures of 1125, 1150, 1175 and 1200 C, respectively. The experimental results show that the Ti-8Mo-8Ni alloys acquire a higher sintering density (98.9%) and hardness (52.1 HRC) after sintering at 1175 C for 1 h. However, due to the grain growth and increased amount of nickel in the Ti-8Mo-8Ni alloys, the transverse rupture strength (TRS) shows an obvious decrease (as compared with Ti-8Mo-6Ni, the TRS value decreasing from 1177 to 685 MPa). Consequently, the suitable Ni content of the Ti-8Mo-6Ni alloys which proves advantageous to the TRS results from the uniform distribution of the TiNi intermetallic compound precipitates within the β matrix. The sintered Ti-8Mo-8Ni alloys also possess the lowest corrosion current (I corr = 1.87 × 10 −7 A·cm −2) and highest polarization resistance (56084 Ω·cm 2 ) in 3.5 mass% NaCl solutions. This result con rms that sintered Ti-8Mo-8Ni alloys effectively improve corrosion resistance.

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“…Hard materials were widely used in the elds of cutting materials, wear resistant materials, high temperature and corrosion-resistant materials [1][2][3][4] . Hard materials consisted of hard phases and binder phases.…”

Section: Introductionmentioning

confidence: 99%

Spark Sintering Behavior of Ubiquitously Fe-B and Fe Powders and Characterization of Their Hard Composites

Kang

Choi

et al. 2016

Mater. Trans.

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Characterization and properties of sintered WC–Co and WC–Ni–Fe hard metal alloys

Cited by 134 publications

References 16 publications

Investigation of the Microstructures, Mechanical Properties and Corrosion Behaviours of Ti-8Mo-6Ni Alloys Adding NbC PowdersviaVacuum Sintering Process

Investigation of the Microstructures, Mechanical Properties and Corrosion Behaviours of Ti-8Mo-6Ni Alloys Adding NbC PowdersviaVacuum Sintering Process

Change in Microstructure, Mechanical Strength and Corrosion Resistance of Ti-8Mo-xNi Alloys through Various Sintering Temperatures

Spark Sintering Behavior of Ubiquitously Fe-B and Fe Powders and Characterization of Their Hard Composites

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