Rapid synthesis of Ti alloy with B addition by spark plasma sintering

Feng, Huicheng; Zhou, Yu; Jia, Dechang; Meng, Qingchang

doi:10.1016/j.msea.2004.08.028

Cited by 67 publications

(36 citation statements)

References 10 publications

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“…4(d)] was indexed during the EBSD experiments and no TiB 2 was observed in the Ti-6Al-4V-0.5B alloy. This is in agreement with thermodynamic expectations [17,[21][22][23][24] and with the Feng et al [20] statement.…”

Section: Microstructure Morphologysupporting

confidence: 93%

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The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

2011

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The effect of boron additions on the sintering behavior, microstructural development, and mechanical properties of a Ti‐6Al‐4V alloy fabricated by metal injection moulding (MIM) was studied. The addition of boron promotes a significant refinement of the microstructure by changing the microstructure from the typical lamellar to a more equiaxed morphology. The presence of both features: α colonies and α grains were confirmed by electron backscatter diffraction (EBSD) experiments. Furthermore, the pinning effect of TiB particles on grain boundary motion enhances the densification process due to the fact that the separation of pores and grain boundaries is suppressed. As a result of the refinement of the microstructure achieved by adding 0.5 wt% boron to the Ti‐6Al‐4V alloy, excellent tensile (σ0.2 = 787 MPa, UTS = 902 MPa and ε = 12%) and fatigue (endurance limit = 640 MPa) properties were obtained.

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Section: Microstructure Morphologysupporting

confidence: 93%

“…Three boron compounds exist in the Ti-B system: TiB, Ti 3 B 4 , and TiB 2 . Feng et al [20] stated that only TiB can be synthesized in situ from the reaction between Ti powder and boron powder. In this investigation, only the TiB phase [ Fig.…”

Section: Microstructure Morphologymentioning

confidence: 99%

The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

2011

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“…[11] In INCONEL 625 alloy consolidated using HIP, a density of 85 to 90 pct was obtained at a temperature of 1118 K. [12] Fast densification was also achieved with SPS in other material systems due to an acceleration of mass transport resulting from the presence of pulse currents. [13][14][15][16][17][18] To seal the porosity, the samples that were SPS consolidated at 1073 K were HP at 773 K (designated as SPS-HP hereafter) to full density corresponding to INCONEL 625 alloy (8.46 g/cm 3 ) at a deformation strain of~8 pct (Figure 1(c)). The fully dense sample SPS-HP yielded a similar yield stress compared to the ones SPS consolidated at higher temperatures (SPS-1173 and SPS-1273), as seen in Figure 1(b).…”

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confidence: 99%

Mechanical Behavior of Cryomilled Ni Superalloy by Spark Plasma Sintering

Zhang

Han

Huang

et al. 2009

Metall Mater Trans A

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The mechanical behavior of ultra-fine-grained (UFG) INCONEL 625 superalloy prepared via cryomilling and spark plasma sintering (SPS) was studied. The workhardening response of the ultra-fine-grained (600 to 700 nm) INCONEL 625 was compared to that of the material with a 1-lm grain size and the results showed normal work hardening for the latter material but not for the former. Moreover, the results suggest that a combination of high strength and good ductility can be simultaneously obtained in the UFG INCONEL 625 alloy.

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“…The blended powders were first ball-milled for 10 h in argon atmosphere, and then hot pressed sintering in vacuum at 1000-1300 1C for 1 h with a pressure of 20 MPa. The TiB reinforcement can be obtained by the chemical reaction between Ti and B during the sintering process [13]. TiB whiskers were separated from the composites by the electrodissolution method and collected.…”

Section: Methodsmentioning

confidence: 99%