Energy absorption aluminum profile for railway vehicle body and manufacturing method thereof
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A technology for rail vehicles and aluminum profiles, applied in the field of Al-Mg-Si new energy-absorbing aluminum alloy profiles containing element V and its preparation, can solve the problems of secondary injury to passengers, poor energy-absorbing effect, and easy tearing, etc. Achieve the effects of inhibiting grain growth, improving energy absorption characteristics, and refining the casting structure
Inactive Publication Date: 2015-10-21
龙口市丛林铝材有限公司
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The aluminum profile applied to the front of the car in the prior art has poor energy absorption effect, and it is easy to tear and splash during high-speed collisions, and it is easy to cause secondary damage to passengers
Method used
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Embodiment 1
[0026] Example 1: 0.5% Si, 0.15% Fe, 0.4% Mg, 0.2% Mn, 0.01% Cu, 0.1% Cr, 0.01% Zn, 0.04% Ti, 0.04% V, and The amount is Al.
Embodiment 2
[0027] Example 2: 0.6% Si, 0.1% Fe, 0.5% Mg, 0.25% Mn, 0.005% Cu, 0.15% Cr, 0.005% Zn, 0.05% Ti, 0.06% V, and The amount is Al.
Embodiment 3
[0028] Example 3: 0.7% Si, 0.15% Fe, 0.6% Mg, 0.3% Mn, 0.01% Cu, 0.2% Cr, 0.01% Zn, 0.06% Ti, 0.1% V, and The amount is Al.
[0029] In the energy-absorbing aluminum profile of the present invention, by adding 0.04%-0.1% V element to the energy-absorbing aluminum profile, the columnar crystal structure of the ingot can be reduced, the casting structure can be refined, and at a relatively high solution treatment temperature, Fine VAl can be precipitated 11 These dispersed phases have high density and high thermal stability, pinning dislocations and grain boundaries during alloy heat treatment and thermal deformation, hindering dislocation rearrangement and grain boundary migration, and inhibiting recrystallization of deformed grains and The role of recrystallization grain growth achieves the purpose of refining the structure of the profile, so that the strength and toughness of the ingot can be improved, the plasticity and corrosion resistance can be improved, and the energy a...
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Abstract
The invention relates to an energy absorption aluminum profile for a railway vehicle body and a manufacturing method thereof. The energy absorption aluminum profile comprises, by mass, 0.5%-0.7% of Si, 0-0.15% of Fe, 0.4%-0.6% of Mg, 0.2%-0.3% of Mn, 0-0.01% of Cu, 0.1%-0.2% of Cr, 0-0.01% of Zn, 0.04%-0.06% of Ti, 0.04%-0.1% of V, and the balance of Al. By adding the 0.04%-0.1% of V into the energy absorption aluminum profile, the columnar crystal structure of a cast ingot can be reduced, the cast structure can be refined, the effects of restraining recrystallization of deformed grains and growth of recrystallized grains can be achieved in the heat treatment and heat deformation processes of the alloy, the purpose of refining the profile structure is achieved, the strength, toughness, ductility and corrosion resistance of the profile are improved, and the energy absorption property of the profile is significantly improved.
Description
technical field [0001] The invention relates to an aluminum profile, in particular to a novel Al-Mg-Si energy-absorbing aluminum alloy profile containing element V suitable for a rail vehicle body and a preparation method thereof. Background technique [0002] While rail trains are lightweight and their operating speed is greatly improved, their safety is becoming more and more prominent. While the running speed of rail trains continues to increase, the braking ability in the event of emergencies has not been effectively improved. At present, an aluminum profile that absorbs collision energy is generally used on the car body to protect the car body. There are no reports on the application of aluminum profiles in rail transportation (especially high-speed rail). The aluminum profile applied to the front of the car in the prior art has poor energy absorption effect, and is easy to tear and splash during high-speed collisions, and easily causes secondary injuries to passengers...
Claims
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