High-temperature aluminium alloy
A technology for aluminum alloys and casting alloys, applied in the field of cold hardening aluminum casting alloys, which can solve problems such as unfavorable castability and increased tendency of thermal cracking
Active Publication Date: 2008-11-26
АЛЮМИНИУМ РАЙНФЕЛЬДЕН ГМБХ
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[0003] Currently AlSi alloys are commonly used as thermally loaded components, the thermal stability is increased by alloying said alloys with Cu (copper), which however increases the tendency to thermal cracking and has a detrimental effect on castability
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[0060] Further advantages, features and details of the invention can be found from the following description of a preferred exemplary embodiment.
[0061] The alloys according to the invention were cast by die casting to form flat tensile test pieces with a wall thickness of 3 mm. After removal from the die casting mold, the specimens were cooled in still air.
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Abstract
A cold hardening ceralumin used for manufacturing a casting component for bearing heat and mechanical load with excellent thermal stability, comprises: 11.0-12.0 wt% Silicon; 0.7-2.0 wt% Magnesium; 0.1-1 wt% manganese, at most 1 wt% iron; at most 2 wt% copper; at most 2 wt% nickel; at most 1 wt% chromium; at most 1 wt% co; at most 2 wt5 zinc; at most 0.25 wt% Ti; at most 40 ppm boron; optional 80-300 ppm sr and the balance aluminium, and other elements and impurities with respectively at most 0.05 wt% and in total 0.2 wt%. The alloy is particularly suitable to manufacturing a cylinder crankcase through a die manufacturing method.
Description
technical field [0001] The invention relates to work-hardenable aluminum casting alloys having good thermal stability for the manufacture of cast components capable of withstanding thermal and mechanical loads. Background technique [0002] Further developments of diesel engines aimed at improving diesel combustion and obtaining higher specific powers lead, inter alia, to increased explosion pressures and thus to pulsating mechanical loads acting on the cylinder crankcase, which place great demands on the material. Stringent requirements. In addition to high durability, in order to be used in the manufacture of cylinder crankcases, the material must also have high temperature cycle strength. [0003] Currently AlSi alloys are commonly used as thermally loaded components, the thermal stability is increased by alloying said alloys with Cu (copper), which however increases the tendency to thermal cracking and has a negative effect on castability. Applications in which thermal...
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IPC IPC(8): C22C21/02B22D17/00
CPCB22D17/00C22C1/06C22C21/02
Inventor 达恩·德拉古林鲁迪格·弗兰克
Owner АЛЮМИНИУМ РАЙНФЕЛЬДЕН ГМБХ
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