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弹簧钢55SiCrA轴向疲劳行为的试验研究肖金福1,刘雅政1,孙小军1,孙景宏1,谢建新1(1.北京市北京科技大学材料科学与工程学院)摘 要:随着对汽车轻量化和安全性要求的不断提高,改善疲劳性能成为弹簧钢研究与开发的一个重要主题.在Amsler HFP 5000高频疲劳试验机上研究了弹簧钢55SiCrA轴向拉-压加载的疲劳性能,测定了其条件疲劳极限及S-N曲线,利用扫描电镜(SEM)和E-DAX对疲劳断口及夹杂物进行观察,对断口进行了宏观和微观分析,研究了疲劳破坏的机制.试验结果表明:试验钢的条件疲劳极限为82......
Trans. Nonferrous Met. Soc. China 23(2013) 650-660 Influence of high-speed milling parameter on 3D surface topography and fatigue behavior of TB6 titanium alloy Chang-feng YAO, Dao-xia WU, Qi-chao.... In order to optimize the machining parameters in high-speed milling TB6 titanium alloy, experiments of high-speed milling and fatigue were conducted to investigate the effect of parameters on 3D surface......
半径和应力比的变化对合金的组织及缺口敏感性影响不大,仅疲劳强度稍有变化.与其他类型常用钛合金相比较,Ti-24Nb-4Zr-8Sn合金具有低的室温疲劳缺口敏感性,这主要归因于其良好的室温塑性以及超弹性变形特点. 关键词:钛合金;缺口;疲劳缺口敏感性 中图分类号:TG 146 文献标志码:A Fatigue notch sensitivity..., Shenyang 110016, China) Abstract: The effect of notch size and R ratios on high cycle fatigue properties at room temperature of Ti-24Nb-4Zr-8Sn alloy was investigated. The results show that, due......
> 关键词: 爆炸复合板;疲劳;界面; 中图分类号: TB331 收稿日期:1999-08-30 基金:国家自然科学基金重点资助项目! 597310 2 0; Fatigue crack propagation of explosive bonded laminate LY12 plate Abstract: An explosive bonded LY12 laminate plate was applied to investigate the effect of interface bonding strength on fatigue crack propagation path. The fatigue crack growth behavior......
:TG146.2 文献标志码:A High cycle fatigue of TG6 alloy LI Juan, CAI Jian-ming, DUAN Rui, HUANG Xu (Beijing Institute of Aeronautical Materials, Beijing 100095, China) Abstract: The high cycle fatigue (HCF) of TG6 titanium alloy was investigated under the condition of different stress concentration factor (Kt) at 600 ℃. In addition, the fatigue fracture surfaces of the alloy were......
基于ANSYS Workbench的齿轮弯曲疲劳寿命分析刘本学,郭沛东,徐科飞,张二亮郑州大学机械工程学院摘 要:在直齿圆柱齿轮高频试验机上对材料牌号为18CrNiMo7-6的直齿圆柱齿轮进行弯曲疲劳试验,获取了该齿轮相关疲劳寿命数据.综合运用SolidWorks与ANSYS Workbench Fatigue Tool对该合金钢齿轮进行疲劳寿命仿真,获取了相关疲劳仿真结果.仿真结果与疲劳寿命对比分析表明,在满足一定的工程精度的情况下,可采用ANSYS Workbench Fatigue Tool快速获零部件的相关疲劳寿命结果,降低产品研发周期与研发成本,具有一定工程参考意义.关键词:18CrNiMo7-6;直齿圆柱齿轮;疲劳寿命;ANSYS Workbench Fatigue Tool;......
peening and plain fatigue specimen (Unit: mm) 分别采用HV-1000型显微硬度计和X-350A型衍射分析仪测量试样沿深度方向的硬度分布和残余应力分布,采用"成组对比法"对激光喷丸强化后的疲劳寿命进行了定量分析,采用GSM-6510型扫描电子显微镜分析试样疲劳断口微观形貌. 2 结果与分析 2.1 显微硬度 铜锌合金试样激光喷丸前后沿深度方向...同的处理方式,i取1,2,3时分别表示未喷丸,2.5 J激光喷丸处理,4.5 J激光喷丸处理;j表示每种处理方式下试样编号,每组疲劳试样有6个,j的取值为1~6.将表3中的数据代入式(1),(2)分别得到,,和s1,s2,s3. 表3 试样疲劳实验数据 Table 3 Fatigue test results of specimens 取置信度g为95%,查t分布表可得t......
Fatigue fracture of high-strength Al-Zn-Mg-Cu alloy JIAN Hai-gen(蹇海根), JIANG Feng(姜 锋), WEN Kang(文 康), JIANG Long(蒋 龙), HUANG Hong-feng(黄宏锋), WEI Li-li(韦莉莉) School of Materials... to study the fatigue fracture of the T7451 Al-Zn-Mg-Cu alloy (470 ℃, 60 min+115 ℃, 8 h+165 ℃, 16 h). The study reveals mainly the microscopic structure of the alloy in the process of crack formation......
on fatigue behavior of 8 m low-height reinforced concrete plate-girder of heavy-haul railway LU Zhaohui1, 2, MA Yifei1, 2, 3, SONG Li1, 2, YU Zhiwu1, 2 (1. School of Civil Engineering, Central South... Supervision Center of Ningxia Hui Autonomous Region, Yinchuan 750001, China) Abstract: In order to understand the fatigue performance of 8 m low-height reinforced concrete plate-girder under heavy-haul trains......
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