| 预变形及液固两相区等温处理对ZA27合金铸态组织的影响 |
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| 引用本文： | 谢辉,XU Li-jun,许丽君,袁中岳,郑红星,郭学锋. 预变形及液固两相区等温处理对ZA27合金铸态组织的影响[J]. 中国有色金属学报, 2001, 11(1): 47-50 |
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| 作者姓名： | 谢辉 XU Li-jun 许丽君 袁中岳 郑红星 郭学锋 |
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| 作者单位： | 1. 西安理工大学 材料科学与工程学院,
2. School of Materials Science and Engineering, Xi′an University of Technology, |
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| 基金项目： | 陕西省自然科学基金资助项目(98C13)；陕西省教委基金资助助项目 |
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| 摘 要： | 研究了固液两相区等温处理对铸态ZA27合金初生相形貌的影响，结果表明：在固液两相区进行等温处理时，枝晶熔断受固液界面处原子的散控制，提高等温温度、延长等温时间因有利于Zn和Al原子的扩散而促进初生相由枝晶向颗粒状晶演变，预变形促进初生相形貌演变的根本原因在于等温处理时液相沿预变形产生的亚晶界的熔渗。
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| 关 键 词： | 固液两相区 等温处理 预变形 ZA27合金 铸态组织 |
| 文章编号： | 1004-0609(2001)01-0047-04 |
| 修稿时间： | 2000-01-23 |
Effects of pre-deformingand isothermal treatment on structural granular transformation of as-cast ZA27 alloy |
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| XIE Hui,XU Li jun,YUAN Zhong yue,ZHENG Hong xing,GUO Xue feng. Effects of pre-deformingand isothermal treatment on structural granular transformation of as-cast ZA27 alloy[J]. The Chinese Journal of Nonferrous Metals, 2001, 11(1): 47-50 |
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| Authors: | XIE Hui XU Li jun YUAN Zhong yue ZHENG Hong xing GUO Xue feng |
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| Abstract: | The effects on transformation of primary phase morphology were studied by using isothermal heat treatment of the as cast ZA27 ingots in semi solid state. The results show that remelting of dendrite is controlled by atom diffusion in the solid liquid interface. Increasing isothermal temperature and prolonging isothermal time, which promoted the diffusion of Zn and Al atoms, are helpful to the transformation. Liquefaction along hypo grain boundaries caused by pre deforming is the radical reason for the morphological transformation. [ |
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| Keywords: | semi solid state pre deformation isothermal treatment |
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