| 高压凝固对Ti-48Al合金片层组织及其力学性能影响 |
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| 引用本文： | 王宏伟,朱冬冬,邹鹑鸣,魏尊杰. 高压凝固对Ti-48Al合金片层组织及其力学性能影响[J]. 稀有金属材料与工程, 2012, 41(1): 42-44 |
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| 作者姓名： | 王宏伟 朱冬冬 邹鹑鸣 魏尊杰 |
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| 作者单位： | 1. 哈尔滨工业大学,黑龙江哈尔滨150001;燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004
2. 哈尔滨工业大学,黑龙江哈尔滨,150001 |
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| 摘 要： | 研究了高压下凝固Ti-48Al合金片层间距及其力学性能的变化。结果表明,压力下凝固时,随着凝固压力的增加扩散系数降低,从而引起片层增厚速度的降低,即片层间距的减小。在常压、2GPa、4GPa下凝固时,片层间距的平均值分别为495,345,227nm。片层组织的显微硬度随着凝固压力的增加而增加。该实验为细化片层间距提供了一种新的方法。
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| 关 键 词： | 高压凝固 片层间距 钛铝金属间化合物 |
| 收稿时间： | 2010-12-21 |
Effect of High Pressure on the Lamellar Spacing and Mechanical Properties of Ti-48Al Alloy |
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| Wang Hongwei,Zhu Dongdong,Zou Chunming and Wei Zunjie. Effect of High Pressure on the Lamellar Spacing and Mechanical Properties of Ti-48Al Alloy[J]. Rare Metal Materials and Engineering, 2012, 41(1): 42-44 |
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| Authors: | Wang Hongwei Zhu Dongdong Zou Chunming Wei Zunjie |
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| Affiliation: | Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | Effect of high pressure on the lamellar spacing and mechanical properties of Ti-48Al alloy was investigated. The results indicate that when solidified under high pressure, the lamellar spacing decreases with the increasing of pressure. The average lamellar spacings are 495, 345 and 227 nm, respectively, when solidified under normal pressure, 2 GPa and 4 GPa. Also the microhardness increases with the pressure increasing. It provides a new way to refine the lamellar structure. |
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| Keywords: | high pressure solidification lamellar spacing TiAl intermetallics |
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