期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.08.045
关键词
Aluminum alloy; Thermo-mechanical processing; Mechanical properties; Intergranular corrosion; Microstructure
类别
资金
- National Basic Research Program of China [2005CB623705]
- National Natural Science foundation of China [51301027]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [14KJB430002]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
A novel thermo-mechanical treatment consisting of conventional pre-aging, cold-rolling and re-aging was developed to enhance the tensile properties and intergranular corrosion resistance of Al-Mg-Si-Cu alloys simultaneously. The thermo-mechanically treated 6061 Al sheets exhibit higher ultimate tensile strength and yield strength (being 466 MPa and 451 MPa) than those of the conventionally peak-aged alloys (being 365 MPa and 347 MPa), and meanwhile have no intergranular corrosion susceptibility and good elongation of 8.1%. Based on the microstructure evolution during the thermo-mechanical treatment, the factors that enhance the tensile properties and intergranular corrosion resistance of the treated sheets are discussed in detail. (C) 2014 Elsevier B.V. All rights reserved.
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