Progress in grinding performance by additive manufacturing of grinding wheels integrated with internal venturi cooling channels and surface slots

Barmouz, Mohsen; Azarhoushang, Bahman; Zahedi, Ali; Rabiei, Farnaz; Steinhäuser, Felix

doi:10.1016/j.jmapro.2023.05.078

Cited by 7 publications

(1 citation statement)

References 32 publications

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“…Although SLM technology is considered an effective and viable method of fabricating high-performance diamond-grinding tools, defects such as high porosities, micro-cracks, and thermal damage pits still exist because of high cooling rates and internal stresses during SLM fabrication. These issues must be overcome when considering their potential for further application [19,20]. Generally, it is difficult to eliminate these defects during the SLM process.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Heat Treatment Temperature on Tensile Properties of Metal-Bonded Diamond Composites Fabricated via Selective Laser Melting

Han,

Xu,

Wei

et al. 2023

Materials

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Selective Laser Melting (SLM) is an effective technology for fabricating new types of porous metal-bonded diamond tools with complex geometries. However, due to the high cooling rate and internal stresses during SLM fabrication, defects such as high porosities and interface gaps still need to be resolved before it can be considered for use in other applications. The influence of heat treatment temperature on internal characterization, interface microstructures, and tensile properties of AlSi7Mg-bonded diamond composites fabricated by SLM were investigated in this work. From experimental results, the porosities of HT-200, HT-350, and HT-500 specimens were 12.19%, 11.37%, and 11.14%, respectively, showing a slightly lower percentage than that of the No-HT specimen (13.34%). Here, HT represents “Heat Treatment”. For No-HT specimens, an obvious un-bonding area can be seen in the interface between AlSi7Mg and diamond, whereas a relative closer interface can be observed for HT-500 specimens. After heat treatment, the elastic modulus of specimens showed a relative stable value (16.77 ± 2.79~18.23 ± 1.72 GPa), while the value of yield strength decreased from 97.24 ± 4.48 to 44.94 ± 7.06 MPa and the value of elongation increased from 1.98 ± 0.05 to 6.62 ± 0.51%. This difference can be attributed mainly to the disappearance of the solid-solution hardening effect due to the increase of Si content after heat treatment.

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Section: Introductionmentioning

confidence: 99%