首页> 外文期刊>Journal of Materials Engineering and Performance >Shot Peening and Thermal Stress Relaxation in 17-4 PH Stainless Steel
【24h】

Shot Peening and Thermal Stress Relaxation in 17-4 PH Stainless Steel

机译:17-4 PH不锈钢中的喷丸处理和热应力松弛

获取原文
获取原文并翻译 | 示例
           

摘要

Shot peening is an effective process to enhance the fatigue performance of turbine blades. In this study, the effect of peening pressures was discussed in terms of the residual stress distribution and the surface morphology. Shot peening processes were designed at varying pressures on a 17-4 PH martensitic stainless steel. The profiles of hardness and residual stress were characterized in the cross section. The thermal stress relaxation was further carried out to evaluate the stability of the compressive residual stress under service temperatures of turbine blades. Results show that a maximum stress depth is obtained with peening pressure of 0.40 MPa, and the residual stress can be maintained up to 400 degrees C, which ensures the service in low-pressure turbine blades.
机译:喷丸处理是增强涡轮机叶片疲劳性能的有效方法。在这项研究中,从残余应力分布和表面形态的角度讨论了喷丸压力的影响。在17-4 PH马氏体不锈钢上以不同的压力设计喷丸处理工艺。在横截面上表征硬度和残余应力的分布。进一步进行热应力松弛以评估在涡轮叶片的使用温度下压缩残余应力的稳定性。结果表明,在0.40 MPa的冲击压力下可获得最大应力深度,并且残余应力可以保持在400摄氏度以下,这确保了在低压涡轮叶片中的使用。

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