| 冲击拉伸加载下等轴TiAl的微观组织演化行为 |
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| 引用本文： | 昝祥,贺跃辉,卢正欣,汪洋,夏源明. 冲击拉伸加载下等轴TiAl的微观组织演化行为[J]. 粉末冶金材料科学与工程, 2011, 16(1): 13-19 |
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| 作者姓名： | 昝祥 贺跃辉 卢正欣 汪洋 夏源明 |
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| 作者单位： | 合肥工业大学材料科学与工程学院;中南大学粉末冶金国家重点实验室;西安理工大学材料科学与工程学院现代分析测试中心;中国科学技术大学近代力学系中国科学院材料力学行为和设计重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(10902106,90505002) |
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| 摘 要： | 通过对等轴组织的Ti-46.5Al-2Nb-2Cr在不同温度和应变率下的力学行为和变形机理研究,揭示应变率对其变形机理的影响.利用冲击拉伸实验研究等轴TiAl在不同温度下的动态力学行为.研究结果表明:等轴TiAl的强度是与温度和应变率相关;动载下的强度明显高于静载下的强度,但在高应变率范围内(320～1350 S-1)...
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| 关 键 词： | TiAl金属间化合物 高应变率 高温 力学行为 微观组织 |
Microstructure evolvement of isometry TiAl under tensile impact loadings |
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| ZAN Xiang,HE Yue-hui,LU Zheng-xin,WANG Yang,XIA Yuan-ming. Microstructure evolvement of isometry TiAl under tensile impact loadings[J]. materials science and engineering of powder metallurgy, 2011, 16(1): 13-19 |
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| Authors: | ZAN Xiang HE Yue-hui LU Zheng-xin WANG Yang XIA Yuan-ming |
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| Affiliation: | ZAN Xiang1,HE Yue-hui2,LU Zheng-xin3,WANG Yang4,XIA Yuan-ming1(1.School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China,2.State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,3.School of Materials Science and Technology,Advanced Material Analysis and Test Center,Xi'an University of Technology,Xi'an 710048,4.Department of Modern Mechanics,CAS Key Laboratory of Mechanical Behavior and Design of Materials,University of Scienc... |
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| Abstract: | Through study on the mechanical behavior and deformation mechanism of Ti-46.5Al-2Nb-2Cr alloy at different temperature and strain rate,the effects of strain rate on the deformation mechanism of isometric TiAl(NG TiAl) were explored.The dynamic mechanical behavior of TiAl was tested by tensile impact loadings experiment.The results show that the strength of TiAl is strain rate and temperature dependent.The dynamic strength of TiAl is higher than that under quasi-static loadings but is not sensitive to strain... |
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| Keywords: | TiAl intermetallics high strain rate elevated temperature mechanical behavior microstructure |
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