Ti-5Al-5Mo-5V-1Cr-1Fe钛合金高周疲劳性能及断裂行为

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY 稀有金属材料与工程 Pub Date : 2018-12-01 DOI:10.1016/S1875-5372(19)30015-3
Liu Yingying, Zhang Le, Shi Xiaonan, Xue Xihao
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引用次数: 2

摘要

在不同应力集中系数Kt和应力比R的条件下,研究了Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511)锻件和棒材的纵向高周疲劳性能和断裂形貌。结果表明:锻件和棒体的疲劳强度均随应力比的增大而增大,随应力集中系数的增大而减小;锻件的疲劳强度是棒材的1.08 ~ 1.57倍。锻件中存在初生α相颗粒,分布更均匀,尺寸更小。但在棒材中存在块状或条状的残余铸造初生α相颗粒。
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High Cycle Fatigue Properties and Fracture Behavior of Ti-5Al-5Mo-5V-1Cr-1Fe Titanium Alloy

Under different stress concentration factors Kt and stress ratios R, the high cycle fatigue (HCF) properties and fracture morphologies of Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) forgings and bars in longitudinal orientation were studied at room temperature. The results show that both the fatigue strength of forgings and bars increases with the increasing stress ratio and decreases with the increasing stress concentration factor. The fatigue strength of forgings is 1.08∼1.57 times greater than that of bars. There are primary α phase particles in the forgings, with more uniform distribution and smaller size. However, there exist residual casting primary α phase particles with the shape of bulk or strip in bars.

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来源期刊
稀有金属材料与工程
稀有金属材料与工程 工程技术-材料科学:综合
CiteScore
1.30
自引率
57.10%
发文量
17973
审稿时长
4.2 months
期刊介绍:
期刊最新文献
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