金属学报  1987, Vol. 23 Issue (3): 217-222

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蠕变断裂韧性对Cr-Mo-V钢蠕变-疲劳交互作用下裂纹开裂和扩展的影响

周顺深

上海发电设备研究所

EFFECT OF CREEP FRACTURE TOUGHNESS ON CRACK INITIATION AND PROPAGATION UNDER CREEP FATIGUE INTERACTION

ZHOU Shunshen (Shanghai Power Plant Equipment Research Institute) (Manuscript received 5 August; 1985; revised manuscript 15 March. 1986)

周顺深. 蠕变断裂韧性对Cr-Mo-V钢蠕变-疲劳交互作用下裂纹开裂和扩展的影响[J]. 金属学报, 1987, 23(3): 217-222.
. EFFECT OF CREEP FRACTURE TOUGHNESS ON CRACK INITIATION AND PROPAGATION UNDER CREEP FATIGUE INTERACTION[J]. Acta Metall Sin, 1987, 23(3): 217-222.

摘要 参考文献 相关文章 Metrics 全文: PDF(2089 KB)   摘要: 本文研究了蠕变断裂韧性对三种低合金Cr-Mo-V钢在蠕变一疲劳交互作用下裂纹开裂和扩展的影响.试验表明,材料韧性对裂纹开裂和扩展起重要作用,脆性状态时,裂纹开裂时间比蠕变时短,二者间的裂纹扩展速度无明显差别;韧性状态时,裂纹开裂时间不仅比蠕变时短,而且其裂纹扩展速度比蠕变时大得多.此外,低合金Cr-Mo-V钢经蠕变一疲劳交互作用后有脆化倾向,其脆性程度取决于钢的原始韧性值.韧性状态时,蠕变-疲劳交互作用显著促使三种Cr-Mo-V钢由韧性向脆性转变;而在脆性状态时,这种脆性转变不明显。 Abstract：Effect of the creep fracture toughness on crack initiation and propagation under creep fatigue interaction for three low alloying Cr-Mo-V steels and their micro-fracture proeesses has been mainly investigated. It showed that toughness of the material plays an important role in crack initiation and propagation. In the brittle state, the crack initiation under creep fatigue interaction is faster than that subjected to creep, and there is no remarkable difference of crack growth rate between them. In the ductile state, not only the crack initiation time is shorter, but also its crack growth rate is much faster. On the other hand, the creep fatigue interaction tends to embrittle the steel, which depends on the original toughness value of the steel. All the three Cr-Mo-V steels can be transformed from toughness into brittleness when they are in ductile condition. But, in brittle condition, this transformation is not clear. 收稿日期: 1987-03-18      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 周顺深 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1987/V23/I3/217 1 Neate G J, Siverns M J. The Application of Fracture Mechanics to Creep Crack Growth, Int Conf. on Creep and Fatigue in Elevated Temperature Application, Phildelphia 1973 and Sheffield U K 1974, C234/73 2 Pilkington R, Miller D A, Worswick D. Metall Trans, 1981; 12A: 173 3 大谷隆一,中村貞二,材料,1976;25(275) :46 4 周顺深,金属学报.1983;19:A59m No related articles found! Viewed Full text Abstract Cited   Shared      Discussed