Effect of aging treatment on microstructure and tensile properties of Al-6.0Zn-2.5Mg-2.0Cu-0.1Zr-0.1Sc alloy
The effect of artificial aging treatment on both microstructure and tensile properties of Al-6.0Zn-2.5Mg-2.0Cu-0.1Zr-0.1Sc alloy subjected to solid-solution treatment was investigated with tensile tester, X-ray diffractometer and scanning electron microscope. The results show that the tensile strength gradually increases and then decreases with prolonging the holding time during the aging treatment. The highest ultimate tensile strength is 721.1MPa at the aging time of 36h, while the corresponding yield strength is 602.1MPa. The X-ray diffraction analysis demonstrates that the improvement in tensile strength after aging treatment can be attributed to the formation of Al3 (Sc, Zr) and metastable η (MgZn2) phases.
Al-Zn-Mg-Cu-Zr-Sc alloy Aging Microstructure Al3(Sc, Zr) precipitate Tensile property
Wang Chen Chen Lijia Che Xin Li Feng
School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
国际会议
北京
英文
147-150
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）