金属学报  2006, Vol. 42 Issue (5): 515-520

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深层滚压加工对高碳铬轴承钢超长寿命疲劳行为的影响

鲁连涛; 盐泽和章;姜燕

西南交通大学牵引动力国家重点实验室

EFFECT OF SURFACE TREATMENT ON ULTRA LONG LIFE FATIGUE BEHAVIOR IN HIGH CARBON-CHROMIUM BEARING STEEL

LianTao Lu

西南交通大学

鲁连涛; 盐泽和章; 姜燕 . 深层滚压加工对高碳铬轴承钢超长寿命疲劳行为的影响[J]. 金属学报, 2006, 42(5): 515-520 .
, , . EFFECT OF SURFACE TREATMENT ON ULTRA LONG LIFE FATIGUE BEHAVIOR IN HIGH CARBON-CHROMIUM BEARING STEEL[J]. Acta Metall Sin, 2006, 42(5): 515-520 .

摘要 参考文献 相关文章 Metrics 全文: PDF(1364 KB)   摘要: 深层滚压加工对高碳铬轴承钢超长寿命疲劳行为的研究表明: 与深层滚压加工前相同, 在高应力幅短寿命区,疲劳裂纹萌生于试样表面;由于表面压缩残余应力的影响, 疲劳强度有所提高.在低应力幅长寿命区, 疲劳裂纹萌生位置从未经深层滚压加工试样的次表面向深层滚压加工试样内部没有压缩残余应力和硬化层的位置转移; 因弯曲应力梯度的影响, 疲劳强度有了较大的提高. 深层滚压加工可以提高高碳铬轴承钢在超长寿命区的旋转弯曲疲劳强度. 关键词 ： 超长寿命疲劳,  滚压加工,  S-N曲线     Abstract：In order to investigate the effect of surface treatment on fatigue behavior of high strength steel in ultra long life regime, cantilever-type rotating-bending fatigue tests were performed in laboratory air at room temperature using hour-glass-shaped specimens of high carbon-chromium bearing steel, JIS SUJ2, with three kinds of surface treatment, which can induce residual stress and hardening in the specimen surface layer. Surface treatments included superoll processing, fine-particle and conventional particle shot-peening. The results obtained are summarized as follows: (1) After surface treatment, fatigue crack initiation site in high cycle region transfers from subsurface in a ground specimen to interior of the specimen, where compressive residual and hardened layer vanish. The largest transference is attributed to the superoll processing specimen, followed by the conventional particle shot-peening one and the smallest is fine-particle shot-peening one. (2) After sur-face treatment, stress gradient of bending fatigue and tensile residual stress exist at fatigue crack initiation site, and affect the fatigue strength of nominal stress amplitude. Fatigue strength of the superoll processing speci-men is improved due to the deeper stress gradient of bending fatigue as compared with the ground specimen. However, that of the shot-peening specimen is not improved. (3) Fatigue strength of high strength steel in ultra long life regime under rotating-bending can be improved by surface treatment which must induce smaller ten-sile residual stress and deeper compression residual stress distribution in surface layer of the material. Key words： Ultra long life fatigue    Superoll processing    Shot-peening    Subsurface fatigue crack    Bearing steel 收稿日期: 2005-05-18      ZTFLH:  TG111   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 鲁连涛 盐泽和章 姜燕 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2006/V42/I5/515 [1] Bathias C. Fatigue Fract Eng Mater Struct, 1999; 22: 559 [2] Bathias C, Drouillac L, Le Francois P. Int J Fatigue, 2001, 23 (Suppl): 143 [3] Ochi Y, Msaki K, Matsumura T. Int J Fatigue, 2001; 23: 441 [4] Shiozawa K, Lu L T, Ishihara S. Fatigue Fract Eng Mater Struct, 2001; 24:781 [5] Shiozawa K, Lu L T. Fatigue Fract Eng Mater Struct, 2002; 25: 813 [6] Murakami Y, Endo M. Int J Fatigue, 1994; 16: 163 [7] Lu L T, Shiozawa K, Morii Y, Nishino S. Acta Metall Sin, 2005; 41: 1066 (鲁连涛,盐泽和章,森井佑一,西野精一．金属学报,2005; 41:1066)J [1] 鲁连涛 李伟 张继旺 盐泽和章 张卫华. GCr15钢旋转弯曲超长寿命疲劳性能分析[J]. 金属学报, 2009, 45(1): 73-78. [2] 鲁连涛; 盐泽和章; 森井佑一; 西野精一 . 高碳铬轴承钢超长寿命疲劳破坏过程的研究[J]. 金属学报, 2005, 41(10): 1066-1072 . [3] 张哲峰;李广义;王中光;李守新. 铜双晶体中晶界及组元晶体的疲劳寿命[J]. 金属学报, 1998, 34(1): 51-56. Viewed Full text Abstract Cited   Shared      Discussed