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Novel heat-resistant, high-strength, high-plasticity and corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy and preparation method thereof

An al-cu-mg-zn-ti, high plasticity technology, applied in the field of aluminum alloy materials, can solve the problems of heat resistance, high strength, high plasticity and corrosion resistance, so as to improve the heat treatment process, improve plasticity and toughness , Strengthen the effect of aluminum alloy

Active Publication Date: 2019-12-31
江苏艾普克斯铝业有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the existing 2000 series aluminum alloys, and to invent a new heat-resistant, high-strength, high-plasticity, corrosion-resistant Al-Cu-Mg-Zn-Ti series aluminum alloy and Its preparation method solves the problem that it is difficult to balance heat resistance, high strength, high plasticity and corrosion resistance, which are common in 2000 series aluminum alloys.

Method used

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  • Novel heat-resistant, high-strength, high-plasticity and corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy and preparation method thereof
  • Novel heat-resistant, high-strength, high-plasticity and corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy and preparation method thereof

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Embodiment 1

[0028] Such as figure 1 shown.

[0029] A novel heat-resistant and corrosion-resistant high-strength and high-plasticity Al-Cu-Mg-Zn-Ti aluminum alloy, which is prepared by the following steps:

[0030] First, A00 grade pure Al (ingredients: 99.79%Al, 0.14%Fe, 0.04%Si, all the components in the present invention are represented by mass percentage, the same below, and the part where the sum of the components is less than 100% is the impurity) is melted Then add Al-Cu master alloy (49.62%Al, 50.12%Cu, 0.15%Fe, 0.11%Si), Al-Ti-B master alloy (5.11%Ti), Al-Zr master alloy (95.69%Al, 4.11% %Zr, 0.20%Fe, 0.10%Si ), Al-Sr master alloy (90%Al, 9.89%Sr, 011%Si). Then add pure Zn (the loss rate of Zn is about 8%) and pure Mg (the loss rate of Mg is about 8%). The master alloy can be purchased directly from the market, or can be prepared by yourself by conventional methods. During the melting process, the former master alloy or metal is melted, and then the latter master alloy or meta...

Embodiment 2

[0034] Such as figure 2 shown.

[0035]A novel heat-resistant, high-strength, high-plasticity, corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy is prepared by the following steps:

[0036] First, A00 grade pure Al (ingredients: 99.79%Al, 0.14%Fe, 0.04%Si, all the components in the present invention are represented by mass percentage, the same below, and the part where the sum of the components is less than 100% is the impurity) is melted Then add Al-Cu master alloy (49.62%Al, 50.12%Cu, 0.15%Fe, 0.11%Si ), Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si ), Al -Sr master alloy (90%Al, 9.89%Sr, 011%Si). Add pure Zn again (the loss rate of Zn is about 8%), pure Mg (the loss rate of Mg is about 8%), and described master alloy can be purchased directly from the market, also can adopt conventional method self-preparation, melting process After the former master alloy or metal is melted, add the latter master alloy or metal, after all are melted into the aluminum solution...

Embodiment 3

[0040] The preparation method and effect of this embodiment are the same as or similar to those of Embodiments 1 and 2, except that the actual composition of the aluminum alloy of this embodiment measured by EDS is: 2.88%Cu, 3.84%Mg, 2.89%Zn, 0.11% Sr, 0.19% Zr, 0.6% Ti, the balance is aluminum and impurity elements.

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Abstract

The invention provides a novel heat-resistant, high-strength, high-plasticity and corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy and a preparation method thereof. The alloy is mainly prepared fromaluminum (Al), copper (Cu), magnesium (Mg), zinc (Zn), strontium (Sr), zirconium (Zr) and titanium (Ti). The preparation method sequentially includes the steps of casting; homogenized annealing (450 DEG C*24 h); cold extruding; solution treatment (480 DEG C*2 h); and aging treatment (120 DEG C*12 h). Grains of the alloy are fine, the heat-resistant stress peak value of the alloy can reach 302.46 MPa-326.66 MPa, according to the national standard GB / T 7998-2005, the intercrystalline corrosion depth of the alloy is 95.19 micrometers-146.3 micrometers, the room-temperature tensile strength is 475.91 MPa-490.43 MPa, the hardness is 155.63 MPa-160.80 MPa, and the elongation after fracture is 16.67%-20.3%.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to a novel heat-resistant, high-strength, high-plasticity, corrosion-resistant Al-Cu-Mg-Zn-Ti aluminum alloy and a preparation method thereof. Background technique [0002] The 2000-series high-strength aluminum alloy has a series of characteristics such as high specific strength, low manufacturing cost, and good process performance. Alloys represented by 2219, 2014, 2017, 2124, and 2618 were born to meet the requirements of aerospace, weaponry, and civil applications in different historical periods. The development needs of the industrial field. [0003] Heat-resistant, high-strength, high-plasticity and corrosion-resistant aluminum alloy is an aluminum alloy with stable structure and excellent mechanical, physical and chemical properties under high-temperature service environment, and is widely used in special occasions such as aerospace. [0004] Strontium (Sr) element is a very eff...

Claims

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Application Information

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IPC IPC(8): C22C21/06C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/06C22F1/047
Inventor 许晓静金啸鹏张进松张斌刘正张日凯韦宏博张鹏庄园
Owner 江苏艾普克斯铝业有限公司
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