...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Mechanical Science and Technology >Experimental research on constant-current source ultrasonic strengthening characteristics of 7075-T651 aluminum alloy
【24h】

Experimental research on constant-current source ultrasonic strengthening characteristics of 7075-T651 aluminum alloy

机译：7075-T651铝合金恒流源超声波强化特性的实验研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

7075-T651 aluminum alloy, which is is widely used in aircraft structural parts, exhibits high-strength deformation. This study proposes using ultrasonic impact enhancement technology to improve the fatigue resistance of this alloy and extend its service life. The principle of ultrasonic impact enhancement is based on equivalent impedance control. The surface-strengthening effect is verified via experiments. Results revealed that the surface roughness of the workpiece decreases from an original value of 0.713 m to as low as 0.353 m. The microhardness of the surface increases from 201 to 260 HV0.1. The residual stress of the surface also increases from -25 to -312 MPa. Under the constant impedance threshold, the surface roughness of the workpiece decreases and the surface microhardness as well as residual stress increase with increasing current output. Under the constant output current, the surface roughness of the workpiece decreases to its minimum value, the microhardness gradually increases, and the residual stress reaches its maximum value with increasing impedance threshold.
机译：7075-T651铝合金广泛用于飞机结构部件，具有高强度变形。本研究提出了使用超声波影响提高技术来提高这种合金的疲劳性，延长其使用寿命。超声波碰撞增强原理基于等效阻抗控制。通过实验验证表面强化效果。结果表明，工件的表面粗糙度从原始值0.713米的原始值降低至0.353米。表面的显微硬度从201到260 HV0.1增加。表面的残余应力也从-25到-312MPa增加。在恒定阻抗阈值下，工件的表面粗糙度降低和表面微硬度以及随着电流输出的增加，残余应力增加。在恒定输出电流下，工件的表面粗糙度降低到其最小值，微硬度逐渐增加，并且残余应力随着阻抗阈值的增加而达到其最大值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号