Al-Mg-Si aluminum alloy and extrusion method for sectional bar of Al-Mg-Si aluminum alloy

• Main Authors: Jing Qiming, Yang Hongchi, He Jianxian, Zhao Qizhong, Lai Lin
• Format: Patent
• Language: Chinese; English
• Published: 10.08.2016
• Subjects: ALLOYS; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses an Al-Mg-Si aluminum alloy and an extrusion method for a sectional bar of the Al-Mg-Si aluminum alloy. The Al-Mg-Si aluminum alloy comprises, by weight percent, 0.9%-1.25% of Mg, 0.5%-0.9% of Si, 0.2%-0.42% of Cu, smaller than or equal to 0.6% of Fe and 0.07%-0.35% of Cr and further comprises one or more elements of smaller than or equal to 0.15% of Mn, smaller than or equal to 0.22% of Zn, smaller than or equal to 0.15% of Ti, smaller than or equal to 0.05% of V, smaller than or equal to 0.5% of Hf, smaller than or equal to 0.25% of Sc, smaller than or equal to 1.0% of Ag and the balance Al. The aluminum alloy with the high mechanical performance is obtained by optimizing alloy components, the content of the alloy components and the sectional bar extrusion technology, and the production efficiency is effectively improved. The problems that in the prior art, conventional aluminum for transportation is low in strength and poor in ductility, the control range of the sectional bar extrusi