Creep behavior of ageing hardened Mg-10Gd-3Y alloy

刘喜波; 关逊; 陈荣石; 韩恩厚

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Creep behavior of ageing hardened Mg-10Gd-3Y alloy

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Tensile creep behaviors of the ageing hardened Mg-10Gd-3Y alloy（referred to GW103）were investigated at temperatures up to 300℃.The extruded-T5 specimen exhibited high creep resistance,i.e.the low steady-state creep rate and long creep rupture time,while the better creep properties were observed in the cast-T6 one.The low steady-state creep rate of 1.71×10- 9s -1is obtained at 200℃and 80 MPa for the extruded-T5 GW103 alloy.In addition,the microstructure development of GW103-T5 alloy was also examined after creep exposure at different temperatures.On the other hand,the stress exponent and activation energy were studied in the temperature range of 200-300℃for the extruded-T5 specimens,and the creep mechanism was also discussed.

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《中国有色金属学报：英文版》 |2010年第s2期|545-549|共5页
作者
刘喜波; 关逊; 陈荣石; 韩恩厚;
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作者单位

1. State Key Laboratory for Corrosion and Protection;

Institute of Metal Research;

Chinese Academy of Sciences 2. Luoyang Ship Material Research Institute 3. High Temperature Creep Laboratory;

Institute of Metal Research;

Chinese Academy of Sciences;

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中图分类镁及其合金的热处理;
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Creep behavior of ageing hardened Mg-10Gd-3Y alloy

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