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Effect of Two-Step Ball Milling on Microstructure and Mechanical Properties of Al4032/Bimodal-B4C Composites
Al4032/Bimodal-B4C composites were synthesized via different milling methods, namely low speed ball milling (SLBM), high speed ball milling (SHBM) and two speed ball milling (TSBM). The Al4032 powder particles were shifted to flakes and some agglomerated B4C were slowly dispersed in flakes during SLBM. SHBM generated severe cold welding of Al4032 flakes and stronger collision, resulting in agglomerated zones within the Al matrix grain. While, TSBM processed samples showed the well coordination of bimodal B4C dispersion in matrix material and better interfacial bonding between Al4032/B4C. The composite powders synthesized at varying concentration of B4C (2.5, 5 and 7.5 wt.%) were hot pressed at 620 °C for 60 min in a vacuum furnace.The results demonstrated that the Al4032 composite with the dispersion of 5 wt.% of bimodal B4C through long term SLBM followed by short term SHBM achieved better hardness and tensile strength values of 87.32 HV and 219.36 MPa.
Effect of Two-Step Ball Milling on Microstructure and Mechanical Properties of Al4032/Bimodal-B4C Composites
Al4032/Bimodal-B4C composites were synthesized via different milling methods, namely low speed ball milling (SLBM), high speed ball milling (SHBM) and two speed ball milling (TSBM). The Al4032 powder particles were shifted to flakes and some agglomerated B4C were slowly dispersed in flakes during SLBM. SHBM generated severe cold welding of Al4032 flakes and stronger collision, resulting in agglomerated zones within the Al matrix grain. While, TSBM processed samples showed the well coordination of bimodal B4C dispersion in matrix material and better interfacial bonding between Al4032/B4C. The composite powders synthesized at varying concentration of B4C (2.5, 5 and 7.5 wt.%) were hot pressed at 620 °C for 60 min in a vacuum furnace.The results demonstrated that the Al4032 composite with the dispersion of 5 wt.% of bimodal B4C through long term SLBM followed by short term SHBM achieved better hardness and tensile strength values of 87.32 HV and 219.36 MPa.
Effect of Two-Step Ball Milling on Microstructure and Mechanical Properties of Al4032/Bimodal-B4C Composites
J. Inst. Eng. India Ser. D
Arumugam, G. (author) / Saravanan, S. (author) / Iqbal, S. Mohamed (author) / Kishorekumar, P. (author)
Journal of The Institution of Engineers (India): Series D ; 105 ; 285-295
2024-04-01
11 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2013
| British Library Online Contents | 2013
| British Library Online Contents | 2013