Preparation method of high-strength and high-toughness A356.2 metal matrix composites for hub

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United States of America Patent

PATENT NO 11685967
APP PUB NO 20220389539A1
SERIAL NO

17634249

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Abstract

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A preparation method of a high-strength and high-toughness A356.2 metal matrix composites for a hub is provided, including the following preparation process steps: preparation of a (graphene+HfB2)-aluminum master alloy wire; A356.2 alloy melting, master alloy addition, refining, and pressure casting; solution and aging treatment; shot blasting, finishing, alkaline/acid cleaning, anodic oxidation, and finished product packaging. In this way, two systems of two-dimensional nano-structure graphene nucleation and in-situ self-nucleation are introduced to complement each other, a second phase of silicon in A356.2 is refined by multi-dimensional scaling, and multi-dimensional nano-phases strengthen the aluminum-based composite material simultaneously. The preparation method solves the problems of limiting the strength, hardness, plasticity and toughness during the application of common A356.2 alloys for a hub, and a graphene/HfB2/aluminum composite material produced by a low-pressure casting process has an excellent comprehensive performance, so as to achieve a further weight reduction requirement for light weight.

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Patent Owner(s)

Patent OwnerAddress
NANJING TECH UNIVERSITY30 PUZHU SOUTH ROAD NANJING JIANGSU PROVINCE 210000 NANJING CITY JIANGSU PROVINCE 210000
D MAG (KUNSHAN) NEW MATERIAL TECHNOLOGY CO LTDNO 118 PENGXI SOUTH ROAD KUNSHAN JIANGSU 215300
GIANT LIGHT METAL TECHNOLOGY (HAIAN) CO LTDNO 188 ALISHAN ROAD HAIAN JIANGSU 226601

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Leng, Jinfeng Shangdong, CN 2 0
Tho, Kee Ping Jiangsu, CN 14 58

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