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A semi-finished product made of wrought aluminum alloys with improved mechanical properties and improved stress crack corrosion resistant warmth treatment liquid, as well as their
A semi-finished product made of wrought aluminum alloys with improved mechanical properties and improved stress crack corrosion resistant warmth treatment liquid, as well as their
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机译:由锻造铝合金制成的半成品,具有改善的机械性能和改善的抗应力开裂腐蚀的耐温处理液,以及它们的
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摘要
The invention relates to a method of heat treatment which is applied to forged aluminum alloys, whereby the mechanical characteristics and resistance against corrosion under tension are increased considerably. This method is characterized by heating prior to tempering, above the temperature of eutectic melting, while remaining below the temperature of the start of the melting at equilibrium. The liquid phase formed temporarily is resorbed progressively, while the formation of pores is avoided by a sufficiently low hydrogen content of the metal. The application of this procedure to several aluminum alloys made it possible to observe increases of the limit of elasticity and of the break load of the order of 7% and a non-rupture stress under tension in 30 days at least equal to 30 hb.
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