金属学报  1982, Vol. 18 Issue (5): 618-626

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16Mn钢疲劳裂纹扩展速率的研究

童志深;侯耀永;李明奇;蒋生蕊

兰州大学;兰州大学;兰州大学;兰州大学

INVESTIGATION OF FATIGUE CRACK GROWTH RATE FOR STEEL 16Mn

Tong Zhishen; Hou Yaoyong; Li Mingqi; Jiang Shengrui (Lanzhou University)

童志深;侯耀永;李明奇;蒋生蕊. 16Mn钢疲劳裂纹扩展速率的研究[J]. 金属学报, 1982, 18(5): 618-626.
, , , . INVESTIGATION OF FATIGUE CRACK GROWTH RATE FOR STEEL 16Mn[J]. Acta Metall Sin, 1982, 18(5): 618-626.

摘要 参考文献 相关文章 Metrics 全文: PDF(543 KB)   摘要: 本文根据三点弯曲试样的J积分计算式及da/dN=C_1(ΔJ)~r的实验事实,导出了三点弯曲试样用ΔJ表征的从线弹性直至全面屈服范围内疲劳裂纹亚临界扩展速率表达式其中高周疲劳近似为它和Paris关系是一致的;而高应变疲劳则为它和Coffin-Manson关系相当。16Mn钢在空气和饱和H_2S水溶液介质中的实验结果表明上述公式是正确的,饱和H_2S水溶液明显加速了疲劳裂纹的亚临界扩展。 Abstract：Based on both the calculating formula for J-integral determined by means of TPB type specimen and the experimental evidence of da/dN=C_1(ΔJ)~r ,an expression of subcritical fatigue crack growth rate characterized by AJ from TPB specimen from the linear elastic to complete yielding region has been derived as follows: For high-cycle fatigue crack, its approximate growth rate will be which seems to be identical with the Paris' relation. For high-stain fatigue crack, it may be which is analogous to the Coffin-Manson's relation.These formulae are confirmed by the experimental results for steel 16Mn specimens in the environment of atmosphere or aqueous H_2S saturated solution. It is also indicated that the aqueous H_2S saturated solution may aggravate the subcritical growth rate of fatigue cracking. 收稿日期: 1982-05-18      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 童志深 侯耀永 李明奇 蒋生蕊 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1982/V18/I5/618 1 Coffin, L. F., Jr., Am. Soc. Test. Mater., Spec. Tech. Publ., № 520,(1973) , p. 5． 2 蔡其巩,金属学报,12(1976) ,45． 3 Dowling, N. E., Am. Soc. Test. Mater, Spec. Tech. Publ., № 601,(1976) , p. 19． 4 申辉旺;邓其源;蔡其巩,未发表资料,1974． 5 陈篪;姚蘅;邓枝生;庄韬;邓其源,金属学报,11(1978) ,174． 6 Mowbray, D. F., Am. Soc. Test. Mater., Spec. Tech. Publ., № 601,(1976) , p. 33． 7 兰州化工机械研究所,未发表资料,1976． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed