Development of aluminum alloy materials
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What is aluminum alloy? eskimo kiss儿童学编程This question should be familiar to everyone. It is a very common alloy in life.Aluminum alloy is one of the most widely ud non-ferrous metal structural materials in industry. it has been widely ud in aviation, aerospace, automobile, machinery manufacturing, ship and chemical industry. With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing, which makes the rearch on weldability of aluminum alloy in depth. At prent, aluminum alloy is the most widely ud alloy.
What are the advantages of aluminum alloy? Aluminum alloy density is low, but the strength is relatively high, clo to or more than high quality steel, good plasticity, can be procesd into various profiles, has excellent electrical conductivity, thermal conductivity and corrosion resistance, widely ud in industry, the u of cond only to steel. Some aluminum alloys can obtain good mechanical properties, physical properties and corrosion resistance by hea
t treatment. Aluminum alloys are easy to process and have a high degree of heat dissipation. In particular the engine part of the vehicle, is particularly suitable for the u of aluminium alloy materials. Here is almost entirely aluminum alloy.
末端What are the shortcomings of aluminum alloy materials?First，Metal fatigue is poor. 动名词作表语Metal fatigue principle is: metal under a certain amplitude can withstand how many times, more than this number is more than the fatigue limit of metal, deformation will occur.Second，The elastic modulus of different alloys is also different, and the elastic modulus will change with the change of temperature, the higher the temperature, the smaller the elastic modulus. The modulus of elasticity of that aluminum alloy at room temperature is about 72,000 MPa, which is significantly different from other material such as 45 # steel.Third，The melting point of aluminum is low，The melting point of aluminum alloy is vegetable>pudong airportabout 650℃, 45 # steel melting point 1350℃.Although aluminum alloy is a good material, but we also need to pay attention to when choosing to u whether appropriate. Ordinary decoration, or decoration, aluminum alloy is no problem, but in some specific environment aluminum alloy is not competent.
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Classification of aluminium alloys. According to the processing method, aluminum alloys can be divided into two categories: wrought aluminum alloys and cast aluminum alloys. Wrought aluminum alloys can withstand pressure machining. Can be procesd into aluminum alloy materials with various shapes and specifications. Mainly ud for manufacturing aviation equipment, building doors and windows, etc. Wrought aluminum alloys are divided into non - heat - treatable strengthened aluminum alloys and heat - treatable strengthened aluminum alloys. Non - heat - treatable strengthening type can not improve mechanical properties by heat treatment, but can only be realized by cold working deformation. it mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum and rust-proof aluminum, etc. Heat - treatable reinforced aluminum alloys can be classified into hard aluminum, wrought aluminum, ultra-hard aluminum and special aluminum alloys by heat treatment such as quenching and aging to improve mechanical properties.erar是什么意思
Prospects for aluminum alloys.Aluminum alloy is the fastest and most widely ud light metal in automobile, this is mainly becau the performance of aluminum alloy itlf has r
eached the requirements of light weight, high strength, corrosion resistance. Early aluminum alloys were ud only in transmission housings, oil pumps, oil dispenrs and other parts that were not strongly impacted. Now, after adding the strengthening element to the aluminum material, the strength is greatly enhanced, and the aluminum material still has the characteristics of light weight, good heat dissipation and the like, so that the aluminum material can meet the requirements of vere working environments such as engine pistons, cylinder heads and the like. The improvement of the aluminum alloy further reduces the weight of the whole vehicle and improves the economy of the whole vehicle.
The aluminum alloy material has the advantages of high strength, large elongation, good ductility and forming performance and good corrosion resistance, and can be ud as balcony guardrails, signs, automobile aerospace, ships, military industry, large-scale building structures and the like of high-ri buildings, besides being applied to doors, windows and curtain walls of aluminum alloy buildings. Becau of its good corrosion resistance, not only can put an end to carbon steel, cast iron guardrail due to rust caud
by repeated maintenance costs and troubles, and colorful surface, can be matched with the building of the human environment effect, greatly enriched the facade of the building, enhance the overall aesthetic feeling of the building. At prent, the results are further to the traffic highway guardrail, automobile and other more extensive industry penetration promotion.
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