Process of preparing aluminum alloy

Abstract

A process of preparing an aluminum alloy includes the following steps: first adding and completely melting a ZL101 Al-Si ingot and then covering the melt next adding one of modifiers Te and Sb and then performing heat preservation; finally adding one or more of rare earth elements La, Ce, Y and transition metal element Hf and then performing heat preservation. The ZL101 Al-Si alloy melt after the treatments can be casted into an ingot or a part after refining.

Claims

1. A process of preparing an aluminum alloy comprising: melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10 Kg of the ZL101 Al-Si alloy into a crucible for melting; adding a modifier Te accounting for 0.1% of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 680 C., and performing heat preservation for 15 minutes; adding a rare earth element La accounting for 0.1% of the mass of the melt of the ZL101 Al Si alloy when the temperature of the melt reaches 700 C., and then performing heat preservation for 5 minutes; and refining the melt and then pouring the melt into a mold.

2. A process of preparing an aluminum alloy comprising: melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10Kg of the ZL101 Al-Si alloy into a crucible for melting; adding a modifier Sb accounting for 0.5% of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 740 C., and performing heat preservation for 60 minutes; adding rare earth elements La, Ce, Y and transition metal element Hf accounting for 0.3%, 0.3%, 0.2% and 0.2% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 730 C., and performing heat preservation for 15 minutes; and refining the melt and then pouring the melt into a mold.

3. A process of preparing an aluminum alloy comprising: melting a ZL101 Al-Si alloy, and after the ZL101 Al-Si alloy is completely melted covering the melt, wherein the melting of the ZL101 Al-Si alloy comprises placing 10Kg of the ZL101 Al-Si alloy into a crucible for melting; adding modifiers Te and Sb accounting for 0.2% and 0.1% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 710 C., and performing heat preservation for 40 minutes; adding rare earth elements La and Y accounting for 0.2% and 0.3% respectively of the mass of the melt of the ZL101 Al-Si alloy when the temperature of the melt reaches 715 C., and performing heat preservation for 10 minutes; and refining the melt and then pouring the melt into a mold.

Description

DETAILED DESCRIPTION

(1) The following embodiments are provided in conjunction with the contents of the present invention to further understand the present invention.

EXAMPLE 1

(2) Place 10 Kg of a ZL101 AlSi alloy into a crucible for melting, add Te accounting for 0.1% of the mass of a melt of the AlSi alloy when the temperature reaches 680 C. and perform heat preservation for 15 min. Add La accounting for 0.1% of the mass of the melt of the aluminum alloy when the temperature of the melt reaches 700 C., perform heat preservation for 5 min, refine the melt, and then pour the melt into a mold to obtain a ZL101 AlSi alloy with good mechanical property, wherein -Al is oval and eutectic silicon has a shape of short rod. A tensile test is performed on an alloy test bar after T6 treatment, which indicates that the elongation rate is 12% and the tensile strength is 300 Mpa.

EXAMPLE 2

(3) Place 10 Kg of a ZL101 AlSi alloy into a crucible for melting, add Sb accounting for 0.5% of the mass of a melt of the AlSi alloy when the temperature reaches 740 C., and perform heat preservation for 60 min. Add La, Ce, Y and Hf accounting for 0.3%, 0.3%, 0.2% and 0.2% respectively of the mass of the melt of the AlSi melt when the temperature of the melt reaches 730 C., perform heat preservation for 15 min, refine the melt, and then pour the melt into a mold to obtain a ZL101 AlSi alloy with good mechanical property, wherein -Al is spherical and eutectic silicon is nearly spherical. A tensile test is performed on an alloy test bar after T6 treatment, which indicates that the elongation rate is 18% and the tensile strength is 290 Mpa.

EXAMPLE 3

(4) Place 10 Kg of a ZL101 AlSi alloy into a crucible for melting, add Te and Sb accounting for 0.2% and 0.1% respectively of the mass of the melt of the AlSi alloy when the temperature reaches 710 C., and perform heat preservation for 40 min. Add La and Y accounting for 0.2% and 0.3% respectively of the mass of the melt of the AlSi alloy when the temperature of the melt reaches 715 C., perform heat preservation for 10 min, refine the melt, and then pour the melt into a mold to obtain a ZL101 AlSi alloy with good mechanical property, wherein -Al is oval and eutectic silicon has a shape of a short rod. A tensile test is performed on an alloy test bar after T6 treatment, which indicates that the elongation rate is 16% and the tensile strength is 295 Mpa.

(5) The above description is only used for explaining the present invention rather than limiting the present invention. The scope limited by the present invention is defined by claims and various modifications can be made within the protection scope of the present invention.