航空学报 > 1994, Vol. 15 Issue (11): 1386-1389

超声振动载荷下合金的疲劳寿命性能研究

倪金刚1, C. Bathias2   

  1. 1. 北京航空航天大学405教研室,北京,100083;2. 法国国家科技研究院冶金试验室,巴黎,75141
  • 收稿日期:1993-06-20 修回日期:1993-12-25 出版日期:1994-11-25 发布日期:1994-11-25

STUDY ON THEFATIGUELIFE BEHAVIORS OF ALLOYS UNDER ULTRASONIC FATIGUELOADING

Ni Jingang1, C. Bathias2   

  1. 1. Faculty 405,Beijing University of Aeronautics and Astronautics,Bebing,100083;2. CNAM,Labo. de Metallurgie,292 Rue St.Martin,75 l41 Paris,Franee
  • Received:1993-06-20 Revised:1993-12-25 Online:1994-11-25 Published:1994-11-25

摘要: 应用超声共振试验技术研究了三种工程常用合金(Udimet500,174PH和Ti-6Al-4V)在超声振动载荷(f=20kHz,R=-1)下的疲劳寿命性能,并与常规疲劳载荷(f=20-50Hz,R=-1)下材料的有关性能做了对比分析。研究结果表明,材料的超声疲劳寿命性能与其动态振动特性、机械响应以及载荷体制有关。

关键词: 超声, 疲劳, 损伤, 应变率, 频率效应

Abstract: The fatigue life behavior of three widely used engineering alloys(Udimet 500,l7-4 PH and Ti-6Al-4V)under ultrasonic fatigue loading are studied(f=20kHz,R=-1).It is shown from experimental and analytical results that fatigue life characteristics of materials at ultrasonic fatigue frequency depend mainly upon the dynamic vibration features and the mechan-ical responses of materials and the different exciting regimes,

Key words: ultrasonic fatigue, damage, strain rate, frequency effect

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