Hybrid metal matrix composite used in automotive crash boxes comprises an aluminum alloy matrix, fly ash cenosphere reinforcements and titanium diboride reinforcements synthesized in-situ, and the composite is fabricated through two-step process involving rheocasting and mechanical stirring
	PRAKASH V; ANAND A; TIWARI S K
	2024-12-30
专利权人	BIRLA INST TECHNOLOGY MESRA (BIRL-Non-standard)
申请日期	2024-12-30
专利号	IN202431104659-A
成果简介	NOVELTY - Hybrid metal matrix composite, comprises an aluminum alloy matrix, 2-6 wt.% fly ash cenosphere (FAC) reinforcements and 1-5 wt.% titanium diboride (TiBZ) reinforcements synthesized in-situ, where the composite is fabricated through a two-step process involving rheocasting and mechanical stirring, so that the reinforcements are homogeneously distributed, enhancing mechanical properties, wear resistance, and grain refinement. The TiBZ reinforcement is synthesized in-situ by the reaction of potassium titanium fluoride and potassium fluoro-borate in stoichiometric proportions during the first step of the fabrication process, under an argon environment to prevent oxidation. USE - The hybrid metal matrix composite is useful in automotive crash boxes. ADVANTAGE - The hybrid metal matrix composite: utilizes fly ash cenospheres derived from industrial waste which improves the material's sustainability and reduces production costs; is lightweight structure and high impact resistance, thus ensuring efficient energy dissipation during collisions. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) rheocasting comprising (a) melting 2 kg aluminum alloy at 750℃ in a graphite crucible, (b) homogenizing the molten matrix for 20 minutes, (c) introducing pre-heated halide salts of potassium titanium fluoride and potassium fluoro-borate, wrapped in aluminum foil, at 250℃, (d) stirring the molten metal intermittently using a stainless-steel mechanical stirrer for 60 minutes, and forming titanium diboride particulates via an exothermic reaction, followed by removal of slag; and (2) fabricating the hybrid metal matrix composite comprising (a1) melting the aluminum alloy at 650-850℃, adding and reacting halide salts to synthesize titanium diboride particulates in situ, (a2) performing rheocasting by pouring the molten alloy over a boron-nitride-coated cooling slope channel to generate a semi-solid slurry, (a3) reheating the slurry to 600-680℃, adding preheated FAC particulates and magnesium to the slurry, (a4) stirring the slurry under an argon environment for homogeneous distribution, and (a5) casting the composite into a preheated mould to achieve billets with varying titanium diboride concentrations.
IPC 分类号	B60R-019/34 ; C04B-111/00 ; C04B-018/08 ; C04B-033/135 ; C04B-035/80
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/13684
专题	中国科学院新疆生态与地理研究所
作者单位	BIRLA INST TECHNOLOGY MESRA (BIRL-Non-standard)
推荐引用方式 GB/T 7714	PRAKASH V,ANAND A,TIWARI S K. Hybrid metal matrix composite used in automotive crash boxes comprises an aluminum alloy matrix, fly ash cenosphere reinforcements and titanium diboride reinforcements synthesized in-situ, and the composite is fabricated through two-step process involving rheocasting and mechanical stirring. IN202431104659-A[P]. 2024.

条目包含的文件
条目无相关文件。

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。