| 挤压及时效处理对铸造Mg94Zn25Y25Mn1合金组织与力学性能的影响 |
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| 引用本文： | 马自在,张金山,李仃,苟科浩,李想,何桦波,姚少华. 挤压及时效处理对铸造Mg94Zn25Y25Mn1合金组织与力学性能的影响[J]. 中国铸机, 2014, 0(5): 43-45 |
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| 作者姓名： | 马自在 张金山 李仃 苟科浩 李想 何桦波 姚少华 |
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| 作者单位： | 太原理工大学,山西太原030024 |
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| 基金项目： | 山西省自然科学基金（No.20090110283,No.20120110221）;山西省大学生创新训练项目基金 |
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| 摘 要： | 利用金相显微镜、扫描电镜等研究了Mg94Zn25Y25Mn1合金正挤压及随后200℃等温时效过程中的组织与力学性能变化。结果表明：Mg94Zn25Y25Mn1合金挤压过程发生动态再结晶，晶粒明显细化，颗粒状的形（Mg3Zn3Y2）相弥散分布，晶界处X相和晶内的14H相发生了小角度变形扭折；挤压态Mg94Zn25Y25Mn1合金经时效50h处理后，可以实现组织均匀化，消除大部分挤压缺陷，抗拉强度高达345MPa，伸长率为22．5％左右。
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| 关 键 词： | Mg94Zn25Y25Mn1 合金 正挤压 等温时效 显微组织 力学性能 |
Microstructure and Mechanics Properties of Mg94Zn25Y25Mn1 Alloy During Extrusion and Aging Process |
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| MA ZiZai,ZHANG JinShan,LI Ding,GOU KeHao,LI Xiang,HE HuaBo,YAO ShaoHua. Microstructure and Mechanics Properties of Mg94Zn25Y25Mn1 Alloy During Extrusion and Aging Process[J]. , 2014, 0(5): 43-45 |
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| Authors: | MA ZiZai ZHANG JinShan LI Ding GOU KeHao LI Xiang HE HuaBo YAO ShaoHua |
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| Affiliation: | (School of Materials Science and Engineering Taiyuan University of Technology, Taiyuan 030024, Shanxi, China) |
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| Abstract: | The microstructure and mechanics properties of extruded and aging-treated Mg94Zn25Y25Mn1alloy has been investigated by using optical microscope （OM）, scanning electron microscopy （SEM）. Resultig in that the grain size of the alloys was decreased and granules Mg3Zn3Y2 phase revealed a more dispersive distribution after direct extrusion. The X-phases and 14H-LPSO phases were bended with small kinking angles.After 200℃aging treatment for 50 hours, the mierostruetures were homogenized, the defects of extrusion and the residual stresses were removed. The ultimate tensile strength and elongation of the as-extruded alloy are 345 MPa and 22.5% respectively. |
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| Keywords: | Mg94Zn25Y25Mn1 alloy Direct extrusion Isothermal aging Microstructure Mechanics properties |
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