Study on Solidification Process of ZL114A Wheel Casting

International Conference on Manufacturing Technology, Materials and Chemical Engineering

材料科学;化学工业

Zhang, Yi^1

Hubei Three Gorges Polytechnic, Yichang

443000, China^1

关键词: Average grain size;    Comparative analysis;    Fracture mechanisms;    Metallurgical quality;    Pouring temperatures;    Solidification process;    Strength and elongations;    T6 heat treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/592/1/012063/pdf
DOI  :  10.1088/1757-899X/592/1/012063

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this paper, three different solidification process design schemes of the ZL114A wheel casting are discussed, in according with the comparative analysis of metallurgical quality statistics, a solidification order from bottom to top and from outside to inside is attained by adjusting the chiller material and reducing the pouring temperature, which meets the HB963-2005IIcasting standards. The average tensile strength, yield strength and elongation of the T6 state are 340MPa, 260MPa and 6.5% respectively after the T6 heat treatment and the low temperature stabilization process. The average grain size of the primary α-Al matrix is about 86μm after adding 0.11%Sb element, the morphology of the binary and ternary eutectic Si phases that distributed nearby the grain boundary are spherical and elliptical, the fracture mechanism of T6 state shows a typical dimple fracture.