As-cast Mg-6Gd-3Y-1Zn-0.5Zr alloy was homogenization annealed at 510 ℃ for different holding time, and then rolled at 450 ℃ with 1-5 passes. The effects of 糖心产精国品免费入口*完整版 time and 糖心产精国品免费入口*完整版 passes on microstructure and tensile properties of the alloy were investigated. The results show that, comparison with the alloy being annealed for 12 h, the amount of lamellar LPSO phase in the alloy being annealed for 40 h was more, which leads to its strength and ductility were far less than those of the alloy being annealed for 12 h. With the increase of 糖心产精国品免费入口*完整版 passes, the volume fraction of recrystallized grains increased, accompanied by the improvement of strength and ductility. After being rolled at 450 ℃ for 5 passes, the alloy being annealed for 40 h exhibited the best tensile properties, with yield strength of 271 MPa, tensile strength of 340 MPa and elongation of 9.0%.
引用该论文:GONG Min-li,LIU Chu-ming,ZHOU Xiao-jie. Effects of Homogenization Annealing Time and Rolling Passes on Microstructure and Tensile Properties of Mg-Gd-Y-Zn-Zr Alloy[J]. Materials for mechancial engineering, 2016, 40(7): 13~17 糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版. 糖心产精国品免费入口*完整版时间和糖心产精国品免费入口*完整版道次对镁钆钇锌锆合金组织及拉伸性能的影响[J]. 机械工程材料, 2016, 40(7): 13~17
【4】YOSHIHITO K, KENTARO H, AKIHISA I, et al. Rapidly solidified powder metallurgy Mg97Zn1Y2 alloys with excellent tensile yield strength above 600MPa[J]. Materials Transaction, 2001, 42: 1172-1176.
【5】XU C, ZHENG M Y, XU S W, et al. Ultra high-strength Mg-Gd-Y-Zn-Zr alloy sheets processed by large-strain hot 糖心产精国品免费入口*完整版 and ageing[J]. Materials Science & Engineering A, 2012, 547: 93-98.
【9】HAGIHARA K, YOKOTANI N, UMAKOSHI Y. Plastic deformation behavior of Mg12YZn with 18R long-period ordered structure[J]. Intermetallics, 2010, 18: 267-276.
【10】ZHU Y M, MORTON A J, NIE J F. The 18R and 14H long-period stacking ordered structures in Mg-Y-Zn alloys[J]. Acta Materialia, 2010, 58(8): 2936-2947.
【11】ZHU Y M, MORTON A J, NIE J F. Growth and transformation mechanisms of 18R and 14H in Mg-Y-Zn alloys[J]. Acta Materialia, 2012, 60(19): 6562-6572.
【12】XU S W, KAMADO S, HONMA T. Effect of homogenization on microstructures and mechanical properties of hot compressed Mg-9Al-1Zn alloy[J]. Materials Science & Engineering A, 2011, 528: 2385-2393.
【13】SHAO X H, YANG Z Q, MA X L. Strengthening and toughening mechanisms in Mg-Zn-Y alloy with a long period stacking ordered structure[J]. Acta Materialia, 2010, 58(14): 4760-4771.
【14】MICHIAKI Y, KENJI H, KOJI H, et al. Effect of multimodal microstructure evolution on mechanical properties of Mg-Zn-Y extruded alloy[J]. Acta Materialia, 2011, 59: 3646-3658.
【15】XU C, ZHENG M Y, XU S W, et al. Microstructure and mechanical properties of rolled sheets of Mg-Gd-Y-Zn-Zr alloy: as-cast versus as-homogenized[J]. Journal of Alloys and Compounds, 2012, 528: 40-44.
【16】MATSUDA M, LI S, KAWAMURA Y, et al. Interaction between long period stacking order phase and deformation twin in rapidly solidified Mg97Zn1Y2 alloy[J]. Materials Science & Engineering A, 2004, 386: 447-452.