Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1574590 | Materials Science and Engineering: A | 2015 | 9 Pages |
Abstract
A novel production method of the Al-Mg-Si-Cu cold-rolled sheets was proposed in the present work, which was characterized by solution treatment substituting for conventional intermediate recrystallization annealing before the final cold-rolling of the sheets. After further solution and peak-ageing treatment, the newly produced 6061 Al sheets exhibited markedly higher mechanical properties (ultimate tensile strength (UTS): 454Â MPa, yield strength (YS): 438Â MPa and elongation (El): 13%) than those of the conventionally produced ones (UTS: 384Â MPa, YS: 368Â MPa and El: 11%). The quantitative estimation of strengthening mechanisms indicated that the increased peak-ageing strength of the newly processed 6061 alloy sheets was mainly attributed to their high average Taylor factor value, which resulted from the P texture with high volume fraction. Furthermore, the fracture characteristics of the newly produced and peak-aged 6061 alloy sheets were dominated by dimple induced cracking accompanied by small amount of intergranular cracking.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Hai Li, Qingzhong Mao, Zhixiu Wang, Fenfen Miao, Bijun Fang, Ziqiao Zheng,