Metallurgical Problems of Welding 1201 (Al-6Cu-Mn) Alloy
The Al-6Cu-Mn alloy differs from other aluminum alloys in that it has relatively good mechanical properties at low temperatures and, therefore, can be successfully used for low-temperature structures. Unlike the duralumin-type alloys, the Al-6Cu-Mn heat-treatable alloy contains more copper (5.8 to 6.8%) and no magnesium . It is similar to the USA alloy 2219. It has satisfactory weldability and mechanical properties over a wide range of temperatures: from 20 K up to 523 K, making it suitable for welded vessels for liquefied gas transportation and storage.
KeywordsMagnesium Welding Argon Helium Shrinkage
susceptibility to hot crack formation
notch toughness energy
ultimate notch tensile strength
conditional yield strength in tension
tensile reduction in area
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