刘莹莹,张乐,史晓楠,薛希豪,杨健.Ti–5Al–5Mo–5V–1Cr–1Fe合金高周疲劳性能及断裂行为的研究[J].稀有金属材料与工程,2018,47(12):3666~3671.[Yingying Liu,Le Zhang,Xiaonan Shi,Xihao Xue,Jian Yang.Study on the High Cycle Fatigue Properties and Fracture Behavior of Ti–5Al–5Mo–5V–1Cr–1Fe Titanium Alloy[J].Rare Metal Materials and Engineering,2018,47(12):3666~3671.]
Ti–5Al–5Mo–5V–1Cr–1Fe合金高周疲劳性能及断裂行为的研究
投稿时间:2017-06-20  修订日期:2017-08-30
中文关键词:  钛合金  疲劳  应力集中系数  应力比
基金项目:陕西省自然科学基金(2016KW-054)
中文摘要:
      研究了在不同应力集中系数Kt和应力比R下Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511)锻件和棒材纵向的室温高周疲劳性能及断口形貌。结果表明:应力比和应力集中系数是影响疲劳性能的两个重要因素。锻件和棒材的疲劳强度均随应力比R的增大而增大,随应力集中系数Kt的增大而减小。锻件的疲劳性能优于棒材,并且锻件的疲劳强度是棒材的1.08~1.57倍。
Study on the High Cycle Fatigue Properties and Fracture Behavior of Ti–5Al–5Mo–5V–1Cr–1Fe Titanium Alloy
英文关键词:titanium alloy  fatigue  stress concentration factor  stress ratio
英文摘要:
      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 stress ratio R and stress concentration factor Kt are two important factors that affect the fatigue properties. Both the fatigue strength of forgings and bars increases with increasing stress ratio and decreases with increasing stress concentration factor. The fatigue properties of forgings are better than bars, and the fatigue strength of forgings is 1.08~1.57 times greater than that of bars.
作者单位E-mail
刘莹莹 西安建筑科技大学冶金工程学院 wfllyy7779@163.com 
张乐 西安建筑科技大学冶金工程学院 fufengzhangle@163.com 
史晓楠 西安建筑科技大学冶金工程学院  
薛希豪 西安建筑科技大学冶金工程学院  
杨健 航空工业第一飞机设计研究院  
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