张聪惠,杨军,宋国栋,任海涛.超声喷丸对工业纯锆拉拉疲劳性能的影响研究[J].稀有金属材料与工程,2019,48(6):1954~1960.[zhangconghui,yangjun,songguodong,renhaitao.Effect of ultrasonic peening on tensile-tensile fatigue properties of industrial pure zirconium[J].Rare Metal Materials and Engineering,2019,48(6):1954~1960.]
超声喷丸对工业纯锆拉拉疲劳性能的影响研究
投稿时间:2018-05-03  修订日期:2018-06-11
中文关键词:  USSP  粗糙度  疲劳性能  断口形貌
基金项目:国家自然科学基金资助(项目号51674187)
中文摘要:
      采用超声喷丸(USSP)对工业纯锆进行处理,就其拉拉疲劳性能展开研究,并利用光学显微镜(OM)和显微硬度计分别对试样的微观组织和由表层到基体的硬度分布进行表征;利用X射线衍射仪(XRD)分析其表层晶粒尺寸、微观畸变以及残余应力。结果表明:USSP处理后,其晶粒尺寸细化到纳米级别,表层残余压应力、表面粗糙度、硬度随着处理时间的增加而增加;原始工业纯锆的疲劳极限为195MPa,USSP处理可显著提高其疲劳极限,USSP处理45min工业纯锆的疲劳极限达到220MPa,较原始工业纯锆提高11.2%;疲劳加载过程中的应力越低,USSP处理对疲劳寿命的提高越明显。
Effect of ultrasonic peening on tensile-tensile fatigue properties of industrial pure zirconium
英文关键词:USSP, Roughness, Fatigue  property, Fracture  morphology
英文摘要:
      Ultrasonic shot peening (USSP) was used to treat industrial pure zirconium and its tension-tension fatigue properties were studied. The microstructure and surface hardness of the samples were characterized by optical microscopy (OM) and microhardness tester. The grain size, micro distortion and residual stress of sample surface were analyzed by X ray diffractometer (XRD). The results show that:After USSP treatment, the grain size is refined to the nano scale, and the residual compressive stress, surface roughness and hardness of the surface increase with USSP time. The fatigue limit of original industry pure zirconium is 195MPa, USSP treatment can significantly increase the fatigue limit and the maximum fatigue limit of USSP treated 45min is maximum, reaching 220MPa, which is 11.2% higher than original industrial pure zirconium. The lower the maximum loading stress during fatigue loading is, the increase of fatigue life by USSP treatment is more obvious.
作者单位E-mail
张聪惠 西安建筑科技大学 jiandazhang2010@hotmail.com 
杨军 西安建筑科技大学 791784661@qq.com 
宋国栋 西安建筑科技大学  
任海涛 西安建筑科技大学  
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