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喷丸对18%Ni型超高强度钢低周疲劳性能影响

王欣 江志华 曾候祥 汤智慧

王欣, 江志华, 曾候祥, 等 . 喷丸对18%Ni型超高强度钢低周疲劳性能影响[J]. 北京航空航天大学学报, 2014, 40(5): 608-612. doi: 10.13700/j.bh.1001-5965.2013.0388
引用本文: 王欣, 江志华, 曾候祥, 等 . 喷丸对18%Ni型超高强度钢低周疲劳性能影响[J]. 北京航空航天大学学报, 2014, 40(5): 608-612. doi: 10.13700/j.bh.1001-5965.2013.0388
Wang Xin, Jiang Zhihua, Zeng Houxiang, et al. Effect of shot-peening on low-cycle fatigue property of 18% Ni ultra-high strength steel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(5): 608-612. doi: 10.13700/j.bh.1001-5965.2013.0388(in Chinese)
Citation: Wang Xin, Jiang Zhihua, Zeng Houxiang, et al. Effect of shot-peening on low-cycle fatigue property of 18% Ni ultra-high strength steel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(5): 608-612. doi: 10.13700/j.bh.1001-5965.2013.0388(in Chinese)

喷丸对18%Ni型超高强度钢低周疲劳性能影响

doi: 10.13700/j.bh.1001-5965.2013.0388
详细信息
    作者简介:

    王欣(1983- ),男,福建福州人,工程师,rasheed990918@163.com.

  • 中图分类号: TG668

Effect of shot-peening on low-cycle fatigue property of 18% Ni ultra-high strength steel

  • 摘要: 对C250型18%Ni超高强度钢(C250钢)进行铸钢丸一次喷丸(单喷)和铸钢丸+玻璃丸二次喷丸(双喷),研究喷丸前后的表面形貌、显微组织和低周疲劳性能的变化.结果表明,单喷后C250钢低周疲劳寿命提高了接近2.5倍,而双喷后试样疲劳寿命提高3倍.喷丸表面的亚晶粒细化是提高低周疲劳性能的主要因素,二次喷丸带来的平滑化效果进一步提高了低周疲劳性能.平滑化效果减小了表面应力集中程度,使经过双喷后试样疲劳断口为单源疲劳断口,而未喷丸试样和单喷试样的低周疲劳断口呈现多源疲劳状态.

     

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出版历程
  • 收稿日期:  2013-07-02
  • 网络出版日期:  2014-05-20

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