Analyzing the Effect of CeB6 on Microstructure and Mechanical Properties of High-Speed Steel Consolidated by Powder Metallurgy

Ouyang, Qi; Luo, Peng; Zhang, Fengli; He, Qinqiu; Wang, Ying; Li, Songlin

doi:10.1007/s11665-018-3675-1

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…High speed steels can be produced by conventional processing that consists of stages such as melting followed by die casting, forming, heat treatments (annealing, austenitizing, quenching, tempering) and machining. Powder metallurgical processing can also produce these steels, and this is useful when conventional processing becomes ineffective with formation of eutectics during solidification and the final product has a coarse and non-uniform microstructure from dendrite formation and segregation [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…Often, large-scale carbide segregation in conventional processing causes embrittlement. These carbides align at times to form paths that favor crack propagation [4][5][6] . The presence of these cracks reduces the energy required for fracture and decreases the fracture toughness of the steel 7,8 .…”

Section: Introductionmentioning

confidence: 99%

“…2) The capacity to resist to permanent deformation (creep resistance). An alternate definition was offered by Johnson, who defined toughness as the amount of energy measured during plastic deformation in a static bend or torsion test 5 . Johnson demonstrated that there is no essential correlation between toughness, as defined by him, and the life of a tool executing intermittent cuts.…”

Section: Introductionmentioning

confidence: 99%

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Fracture Toughness of Vacuum Sintered AISI M3:2 High Speed Steels

Silva Junior,

Silva,

Neves

et al. 2023

Mat. Res.

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The aim of this investigation was to study and evaluate the fracture toughness (K ICV ) of an AISI M3:2 high speed steel that was prepared by powder metallurgical processing, which consisted of uniaxial cold compaction of irregularly shaped water atomized powders, without and with 0.3% of carbon in the form of graphite, followed by vacuum sintering to obtain compacts with densities close to its theoretical value. The sintered steels were then hardened by austenitizing, quenching and triple tempering. Chevron fracture toughness test samples were prepared from the compacts and the tests conducted to determine K ICV . The microstructures of the specimens were examined by scanning electron microscopy (SEM), and the composition of the phases determined by x-ray diffraction analysis (XRD). The sizes of the primary carbides and of the austenite grains were determined using Quantikov digital analysis software. No significant difference in fracture toughness (K ICV ) between the two high speed steels AISI M3:2, austenitized at the different temperatures, was observed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fracture Toughness of Vacuum Sintered AISI M3:2 High Speed Steels

Silva Junior,

Silva,

Neves

et al. 2023

Mat. Res.

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Mechanical properties and fracture mechanism of boron-containing 304L austenitic stainless steel densified by liquid phase sintering

Lin

et al. 2021

Materials Science and Engineering: A

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Microstructure, Strengthening Mechanism and Mechanical Properties of Vanadis 60-Ta0.5Nb0.5C-B4C High-speed Steel Composite via Vacuum Sintering, Sub-zero, and Heat Treatments

Huang,

Chang,

Chang

2024

ISIJ Int.

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This research added different ratios of Ta 50 Nb 50 C and B 4 C powders to Vanadis 60 high-speed steel powders, and then, sintered the Vanadis 60 composite from 1205 to 1225°C by vacuum sintering for 1 hour. Subsequently, a series of heat treatments were conducted, including quenching, sub-zero, and tempering processes. The study results show that the optimal sintering temperature and the additive ratio for Vanadis 60 composites were 1205°C and 0.975 mass% Ta 50 Nb 50 C-0.025 mass% B 4 C powders, respectively. Simultaneously, the transverse rupture strength (TRS) value was 2328.2±0.90.7 MPa and the hardness value was 81.3±0.1 HRA, respectively. In particular, when the optimally sintered Vanadis 60 composite underwent sub-zero plus heat treatments, the TRS and hardness values obviously increased to 2456.6±76.3 MPa and 85.7±0.3 HRA, respectively. Finally, the TEM and EBSD study results also revealed that various MC and M 6 C-type carbides significantly appeared in the Vanadis 60 composite after vacuum sintering and sub-zero plus heat treatments.

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Analyzing the Effect of CeB6 on Microstructure and Mechanical Properties of High-Speed Steel Consolidated by Powder Metallurgy

Cited by 3 publications

References 18 publications

Fracture Toughness of Vacuum Sintered AISI M3:2 High Speed Steels

Fracture Toughness of Vacuum Sintered AISI M3:2 High Speed Steels

Mechanical properties and fracture mechanism of boron-containing 304L austenitic stainless steel densified by liquid phase sintering

Microstructure, Strengthening Mechanism and Mechanical Properties of Vanadis 60-Ta<sub>0.5</sub>Nb<sub>0.5</sub>C-B<sub>4</sub>C High-speed Steel Composite via Vacuum Sintering, Sub-zero, and Heat Treatments

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