通过拉伸测试、显微硬度测试、扫描电镜分析等手段, 研究了预变形对Mg-Gd-Y-Zr合金力学性能的影响.结果表明: 时效前的预变形提高了合金峰值硬度, 加速了Mg-Gd-Y-Zr合金在220 ℃下的时效过程, 合金峰值时效时间提前2～3 h;另外预变形可以提高合金的强度, 同时也降低了合金的塑性;综合考虑合金的强度和塑性, Mg-Gd-Y-Zr合金时效前的预变形以8%为宜.
参考文献
| [1] | 刘正;张奎;曾小勤.镁基轻质合金理论基础及其应用[M].北京:机械工业出版社,2002:5. |
| [2] | Cerrie,Barbagallos .The influence of high temperature on ageing kinetics of a die cast magnesium alloy[J].Materials Letters,2002,56:716. |
| [3] | Mordike BL. .Creep-resistant magnesium alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1-2 Special Issue SI):103-112. |
| [4] | Drits M E;Sviderkaya Z A;Rokhlin L .Effect of alloying on properties of Mg-Gd alloys[J].Metal Science and Heat Treatment,1979,21(11):62. |
| [5] | Ifeanyi Anthony Anyanwu;Shigeharu Kamado;Yo Kojima .Aging Characteristics and High Temperature Tensile Properties of Mg-Gd-Y-Zr Alloys[J].Materials transactions,2001(7):1206-1211. |
| [6] | 张新明,彭卓凯,陈健美,邓运来.耐热镁合金及其研究进展[J].中国有色金属学报,2004(09):1443-1450. |
| [7] | Chaturvedi M C;Chung D W;Doucette R A .Effect of thermo-mechanical treatment on structure and properties of 2036 aluminum alloy[J].Materials Science,1979,13(01):34. |
| [8] | Ringer S P;Muddle B C;Polmear I .Effects of coldwork on precipitation in Al-Cu-Mg-(Ag) and Al-Cu-Li-(Mg,Ag) alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1995,26A(07):1659. |
| [9] | Cingara G.A.;Toronto D.D.P. .An overview for thermomechanical processing of Al-Li based alloy, Part I[J].Aluminium,2000(4):313-315. |
| [10] | 李松瑞;周善初.金属热处理[M].长沙:中南大学出版社,2003:396. |
| [11] | 余永宁.金属学原理[M].北京:冶金工业出版社,2000:400. |
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