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中国腐蚀与防护学报  1982, Vol. 2 Issue (1): 18-26    
  研究报告 本期目录 | 过刊浏览 |
高强钢螺桩应力腐蚀断裂研究
褚武扬;姚玉琴;林实;肖纪美;金铮
北京钢铁学院金属物理教研室;北京钢铁学院金属物理教研室;北京钢铁学院金属物理教研室;北京钢铁学院金属物理教研室;北京钢铁学院金属物理教研室
ANALYSIS OF STRESS CORROSION FAILURE OF FASTENING BOLT
Chu Wuyang Yao Yuqin Jin Zheng Hsiao Chimei and Lin Shi (Department of Metal Physics; Beijing University of Iron and Steel Technology)
全文: PDF(1573 KB)  
摘要: 对超高强钢螺桩的大批量断裂事故进行了断日分析,确认是水介质或БФ—2~(**)胶中的应力腐蚀断裂。测量了几种高强钢在不同热处理条件下的K_(ISCC)和da/dt(平台值)。应用断裂力学对带裂纹螺桩断裂的可能性进行了定量分析, 测量了缺口形成应力腐蚀裂纹的临界应力场强度因子K_(ISCC)。利用不同曲率的缺口试样详细研究了缺口形成应力腐蚀裂纹的规律。由此也可估算无预裂纹的螺桩产生应力腐蚀断裂的力学条件。
Abstract:The accidental failures of fastening bolt(M33) made of Ultra-high strength steel 3OCrMnSiNi2 were investigated by fraetography. The result showed that it was stress corrosion fracture in water or БФ-2gum. The K_(ISCC) and da/dt of 3OCrMnsiNi2 steel in water and БФ-2 gum were measured by the constant load and constant displacement specimen of L-C and R-C direction. For three low alloy steels, the influence of heat treatment on the K_(ISCC) and da/dt were investigated. The threshold value of stress corrosion cracking of the notch specimen K_(ISCC)(ρ)was measured by modified WOL type notched specimens of various tip radius ρ. The result was as follows where A and B are constants for the speejfje materials. For 3OCrMnSiNi2 (T. S.=158OMPa), the parameters A, B and ρ are 21.7 MPa m~(1/2), 4180 MPa and 0.027 mm respectively. The accidental failures of the fastening bolt with pre-crack or no crack are quantitatively analyzed by linear elastic fracture mechanics. According to these results. preventive measures to avoid failure of the fastening bolt have been suggested.
收稿日期: 1982-02-25     

引用本文:

褚武扬;姚玉琴;林实;肖纪美;金铮. 高强钢螺桩应力腐蚀断裂研究[J]. 中国腐蚀与防护学报, 1982, 2(1): 18-26.
. ANALYSIS OF STRESS CORROSION FAILURE OF FASTENING BOLT. J Chin Soc Corr Pro, 1982, 2(1): 18-26.

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y1982/V2/I1/18

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