Interface characteristics and fracture behavior of brazed polycrystalline CBN grains using Cu–Sn–Ti alloy

Ding, Wenfeng; Xu, Jie; Chen, Zhenzhen; Miao, Qing; Yang, Chuanfang

doi:10.1016/j.msea.2012.09.002

Cited by 79 publications

(25 citation statements)

References 22 publications

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“…The heating and cooling rates were 10 ∘ C/min during the brazing cycle. The brazing parameters were determined based on the preliminary results in our previous research [10]. Figure 1(c) shows the typical morphology of the brazed BCBN abrasive wheels, which is also called grinding heads in the industrial fields.…”

Section: Brazing Experiments and Characterization Methodmentioning

confidence: 99%

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Comparative Investigation on Brazing Behavior, Compressive Strength, and Wear Properties of Multicrystalline CBN Abrasive Grains

Ding

Zhu

et al. 2014

Advances in Mechanical Engineering

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In order to fabricate the abrasive wheels with good grain self-sharpening capacity, two types of multicrystalline CBN grains, that is, polycrystalline CBN (PCBN) and binderless CBN (BCBN), were brazed using Cu-Sn-Ti alloy, respectively. Comparative investigation on the brazing interface, compressive strength, and wear properties of the different grains was carried out. Results obtained show that the PCBN grains have more intricate reaction, more complicated resultants, and thicker reaction layer than the BCBN counterparts under the identical brazing conditions. Though the average compressive strength of the PCBN grains is similar to that of BCBN ones, stronger self-sharpening action by virtue of the microfracture behavior takes place with BCBN grains during grinding. As a consequence, compared to the brazed PCBN wheels and the conventional monocrystalline CBN (MCBN) ones, longer service life is obtained for the brazed BCBN wheels.

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Section: Brazing Experiments and Characterization Methodmentioning

confidence: 99%

“…Though the preliminary research has been done for the polycrystalline CBN grains in our previous work [10,11], there is still a lack of the comparative investigation on the brazing behavior, compressive strength, and wear properties of polycrystalline CBN grains and binderless CBN ones.…”

Section: Introductionmentioning

confidence: 99%

Comparative Investigation on Brazing Behavior, Compressive Strength, and Wear Properties of Multicrystalline CBN Abrasive Grains

Ding

Zhu

et al. 2014

Advances in Mechanical Engineering

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“…The properties of bond materials are taken from published literatures or supplied by the manufacturers, as listed in table III [9]. Commercially available 3D finite element program-SIMULATION of the SOLIDWORKS was used to analyse the stress exits in the bond material under the same workload.…”

Section: Grit Holding Capacity Analysismentioning

confidence: 99%

“…The simulation applies normal force Fn of 0.04N and the tangential force Ft of Fig .5 shows the stress distribution in the grain-bond junction region for different shapes of the diamond grains, it can be seen that the maximum stress occurred in the contact zone of the grit and workpiece. The maximum stress of the pyramidal grains is approximately 1.107×10 9 Pa, while the shear strength of Cu-Sn-Ti alloy is 2.45 ×10 8 Pa, it indicates that shear failure will occur in the contact zone, the macro-fracture at the grit-bond junction region will occur severely, which could lead to the grit pullout during grinding. The maximum stress of the polyhedral, ellipsoidal and spherical grains are approximately 2.56×10 8 Pa, 1.386×10 8 Pa and 9.307×10 7 Pa respectively.…”

Section: Grit Holding Capacity Analysismentioning

confidence: 99%

“…The results show that a high stress state occurs at the interface close to the surface of the matrix, the magnitude of stress at the tension side of the particle increases drastically when the matrix is worn away evenly on both sides of the particle. Ding et al [9] developed a two dimensional finite element model to investigate the stress characteristics and fracture wear of the grains, it was found that grain macro-fracture wear is dominated by the brazing stresses in the junction region of the grains, and the peak brazing stress reduces with the increase in the grain embedding depth. However, the effect of grit shape on the stress was overlooked.…”

Section: Introductionmentioning

confidence: 99%

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Effects of abrasive grit shape on grinding performance

Chen

2017

2017 23rd International Conference on Automation and Computing (ICAC)

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-The quality of grit in grinding wheel has predominate influence on the grinding wheel performance, such as wheel sharpness and wheel wear. This paper presents an investigation on the effect of difference grit shapes on grinding force and grit holding capacity. Some critical grinding behaviours are analysed in relation to grit shapes to establish a foundation for grit quality assessment. A desirable grit shape is identified for better cutting efficiency and grinding wheel life.

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Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

Sinha

Lim

Chothe

et al. 2022

J of Applied Polymer Sci

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Titanium (Ti) being a lightweight, biocompatible, and strong metal, immense attention is being paid to develop Ti-based different low-cost and efficient biomedical implants by employing additive manufacturing (AM) or 3D printing.Binder having abundant binding efficacy binds the alloying metal powders and maintains their stoichiometry and close attachment. However, in the case of Ti-alloy, the Ti, or other alloying metals, e.g., zirconium (Zr), because of their high reactivity with ambient moisture and oxygen, needs to be stabilized before the alloy formation. In this work, instead of using various nonbiocompatible thermoplastic and semi-crystalline polymers responsible for causing stress-induced defects in the final structure, the efficacy of a biocompatible amorphous polymer (i.e., polyvinyl pyrrolidone [PVP]) as a binder towards developing the Ti-alloy has been examined. PVP-bound alloying metal powders were found to be stable for 30 days (as per the XRD analysis) and exhibited a nearly similar composition to the experimental formula. Thermal debinding was examined for two temperatures, 600 and 1000 C, and compared with the help of SEM and XRD analyses. The better debinding (i.e., reduction of carbon content as per the EDX analysis) was found for the 1000 C debinding temperature.

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Interface characteristics and fracture behavior of brazed polycrystalline CBN grains using Cu–Sn–Ti alloy

Cited by 79 publications

References 22 publications

Comparative Investigation on Brazing Behavior, Compressive Strength, and Wear Properties of Multicrystalline CBN Abrasive Grains

Comparative Investigation on Brazing Behavior, Compressive Strength, and Wear Properties of Multicrystalline CBN Abrasive Grains

Effects of abrasive grit shape on grinding performance

Polyvinyl pyrrolidone (PVP) as an efficient and biocompatible binder for metal alloy processing: A case study with Ti‐20Zr‐11Nb‐3Sn

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