11-04-2013 дата публикации
Номер: US20130087074A1
A copper-based alloy which contains 7.8 to 8.8 mass % of Al, 7.2 to 14.3 mass % of Mn and a remainder made up by Cu and unavoidable impurities, has a largest crystal grain diameter of more than 8 mm, has good shape memory properties, and enables the production of a structural material having a cross-section size suitable for use as a structure body or the like; and a structural material comprising the copper-based alloy. The copper-based alloy may additionally contain at least one element selected from the group consisting of Ni, Co, Fe, Ti, V, Cr, Si, Ge, Nb, Mo, W, Sn, Bi, Sb, Mg, P, Be, Zr, Zn, B, C, S, Ag and a misch metal in the total amount of 0.001 to 5 mass %. 1. A copper-based alloy that has shape-memory properties and can be applied to various structures , comprising:7.8 to 8.8 mass % of Al;7.2 to 14.3 mass % of Mn; anda remainder comprising Cu and unavoidable impurities;wherein the copper-based alloy has a maximum crystal particle size of more than 8 mm.2. The copper-based alloy of claim 1 , further comprising one kind or two or more kinds of elements selected from the group consisting of Ni claim 1 , Co claim 1 , Fe claim 1 , Ti claim 1 , V claim 1 , Cr claim 1 , Si claim 1 , Ge claim 1 , Nb claim 1 , Mo claim 1 , W claim 1 , Sn claim 1 , Bi claim 1 , Sb claim 1 , Mg claim 1 , P claim 1 , Be claim 1 , Zr claim 1 , Zn claim 1 , B claim 1 , C claim 1 , S claim 1 , Ag and a misch metal by 0.001 to 5 mass % in total.3. A concrete element having a main reinforcement comprising the copper-based alloy of .4. A pre-stressed concrete element that comprises a PC tendon comprising the copper-based alloy of .5. A reinforcing material comprising the copper-based alloy of claim 1 , which is configured to be disposed inside of a masonry wall.6. A splice plate comprising the copper-based alloy of claim 1 , which is configured to be used in joining elements.7. A joint bolt comprising the copper-based alloy of claim 1 , which is configured to be used in joining elements.8 ...
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