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Micromanufacturing technology and its practice

Journal Article


Abstract


  • In order to make micro composite drills (Fig. 1), cemented tungsten carbide (WC-10Co) and high strength (AISI 4340) steel were successfully bonded by hot compaction diffusion bonding at a low temperature. The effects of holding time, pressure and temperature on microstructure and mechanical properties of the sintered carbides and bonding strengths of the bimetallic composites were examined, and a transitional layer was found at the interface as a result of elemental inter-diffusion. The optimal bonding parameters were determined to achieve the maximum bonding strength of 226 MPa of the WC-10Co/AISI 4340 steel joints, which is helpful in producing micro composite drills. Microforming is introduced to produce lighter and more energy effective products. In this study, Magnesium-Lithium (Mg-Li) alloy, new material in microscale, was chosen to superior formed micro-cup due to its ultralight weight with outstanding ductility. The dry and oil lubrication conditions were chosen as benchmarks to investigate effects of a novel oil-based nano-particle lubricant in micro deep drawing (MDD) process of Mg-Li alloy. Finite Element (FE) modelling was conducted and the simulation results of the drawing force were in a good agreement with the experimental results. The formed cup quality with consideration on the surface roughness has been extensively evaluated and the results illustrated the quality improvement was substantial.

Publication Date


  • 2020

Citation


  • Jiang, Z., Hasam, M., Kamali, H., Jia, F., & Xie, H. (2020). Micromanufacturing technology and its practice. Solid State Phenomena, 311 SSP, 12-20. doi:10.4028/www.scientific.net/SSP.311.12

Scopus Eid


  • 2-s2.0-85096413916

Web Of Science Accession Number


Start Page


  • 12

End Page


  • 20

Volume


  • 311 SSP

Abstract


  • In order to make micro composite drills (Fig. 1), cemented tungsten carbide (WC-10Co) and high strength (AISI 4340) steel were successfully bonded by hot compaction diffusion bonding at a low temperature. The effects of holding time, pressure and temperature on microstructure and mechanical properties of the sintered carbides and bonding strengths of the bimetallic composites were examined, and a transitional layer was found at the interface as a result of elemental inter-diffusion. The optimal bonding parameters were determined to achieve the maximum bonding strength of 226 MPa of the WC-10Co/AISI 4340 steel joints, which is helpful in producing micro composite drills. Microforming is introduced to produce lighter and more energy effective products. In this study, Magnesium-Lithium (Mg-Li) alloy, new material in microscale, was chosen to superior formed micro-cup due to its ultralight weight with outstanding ductility. The dry and oil lubrication conditions were chosen as benchmarks to investigate effects of a novel oil-based nano-particle lubricant in micro deep drawing (MDD) process of Mg-Li alloy. Finite Element (FE) modelling was conducted and the simulation results of the drawing force were in a good agreement with the experimental results. The formed cup quality with consideration on the surface roughness has been extensively evaluated and the results illustrated the quality improvement was substantial.

Publication Date


  • 2020

Citation


  • Jiang, Z., Hasam, M., Kamali, H., Jia, F., & Xie, H. (2020). Micromanufacturing technology and its practice. Solid State Phenomena, 311 SSP, 12-20. doi:10.4028/www.scientific.net/SSP.311.12

Scopus Eid


  • 2-s2.0-85096413916

Web Of Science Accession Number


Start Page


  • 12

End Page


  • 20

Volume


  • 311 SSP