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金属学报  1995, Vol. 31 Issue (6): 286-288    
  论文 本期目录 | 过刊浏览 |
Ti_3Al基合金的拉伸形变和断裂
艾素华;关少轩;冯泽民;葛景岩
中国科学院金属研究所材料疲劳与断裂国家重点实验室;东北大学
TENSILE DEFORMATION AND FRACTURE OF Ti_3Al BASED ALLOY
AI Suhua; GUAN Shaoxuan (State Key Laboratory Fatigue and Fracture of Materials; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110015)FENG Zemin; GE Jingyan(Department Science and EngineeringNortheastern University; Shenyang 110006)
引用本文:

艾素华;关少轩;冯泽民;葛景岩. Ti_3Al基合金的拉伸形变和断裂[J]. 金属学报, 1995, 31(6): 286-288.
, , , . TENSILE DEFORMATION AND FRACTURE OF Ti_3Al BASED ALLOY[J]. Acta Metall Sin, 1995, 31(6): 286-288.

全文: PDF(249 KB)  
摘要: 测试了三种显微组织Ti_3Al基合金的室、高温拉伸性能;并用SEM和TEM详细观察样品的形变和断裂特征.结果发现,材料的力学性能与断口和位错组态的变化密切相关.随实验温度升高,强度降低,延性增加;随固溶温度提高,强度增加,延性降低.三种组织室温拉伸均为解理断裂,高温呈现解理与沿晶混合断裂.
关键词 Ti_3Al基合金拉伸形变解理断裂    
Abstract:The tensile properties of Ti3Al based alloy undergone 3 different regimes of solutioning treatment have been examined at room and elevated temperatures. The deformation and fractrure feature of the typical specimens have been observed under SEM and TEM. It is found that the mechanical properties correlated closely with the changes of fracture surface and dislocation configuration. With increasing testing temperature the strength decreased and the ductility increased. but with increasing solution temperature the strength increased and the ductility decreased. The cleavage fracture is revealed at room temperature in the three microstructures and the mixed (cleavage and intergranular) fractrue at elevated temperature.
Key wordsTi_3Al based alloy    tensile deformation    cleavage fracture
收稿日期: 1995-06-18     
基金资助:国家自然科学基金
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