金属学报  1980, Vol. 16 Issue (2): 179-259

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高强度钢水介质应力腐蚀研究

褚武扬;李世琼;肖纪美;王枨

北京钢铁学院;北京钢铁学院;北京钢铁学院;北京钢铁学院

STRESS CORROSION OF HIGH STRENGTH STEELS IN WATER MEDIUM

Chu Wuyang;Li Shiqiong;Xiao Jimei (Hsiao Chi-mei);Wang Cheng Beijing Institute of Iron and Steel Technology

褚武扬;李世琼;肖纪美;王枨. 高强度钢水介质应力腐蚀研究[J]. 金属学报, 1980, 16(2): 179-259.
, , , . STRESS CORROSION OF HIGH STRENGTH STEELS IN WATER MEDIUM[J]. Acta Metall Sin, 1980, 16(2): 179-259.

摘要 参考文献 相关文章 Metrics 全文: PDF(2031 KB)   摘要: 本文对应力腐蚀试验的WOL型恒位移试样作了评述.并用它测量了四种高强度钢在水介质中的止裂K_(Iscc)和da/dt.对其中的30CrMnSiNi_2A钢研究了强度和组织的影响.结果表明,对同一类热处理,随强度下降K_(Iscc)提高.当强度相同时,等温后回火组织的K_(Iscc)明显比马氏体组织和不回火贝氏体组织高得多.当强度σ_b≤130—140kgf/mm~2时,裂纹扩展情况发生变化,K_(Iscc)明显升高、da/dt也大幅度下降. 用不同曲率(ρ)的恒位移缺口试样测量缺口形成应力腐蚀裂纹的界限应力强度因子K_(Iscc)(ρ),结果表明: K_(Iscc)(ρ)=B ρ≤ρ_0 Aρ~(1/2) ρ>ρ_0A是材料常数.对σ_b=161 kgf/mm~2的30CrMnSiNi_2A钢,A=426kgf/mm~2. 根据实验数据,运用线弹性断裂力学对30 CrMnSiNi_2A钢高强度螺栓的应力腐蚀断裂事故进行了定量分析,给出了提高螺栓安全性的具体办法. Abstract：A review was made of the modified WOL-type constant displacement speci-men for stress corrosion by which the _(Iscc) and da/dt of four high strength steels,as 30CrMnSiNi_2A, 40CrNiMoA, 30CrMnSiA and ZG-18 cast steel, in water me-dium were evaluated. Among these steels, the influence of heat treatment, thestrength and microstructure of 0CrMnSiNi_2 A on the K_(Iscc) and da/dt has beenstudied in detail. The K_(Iscc) obtained may be increased with decrease f heir ownstrength of specimens undergone same heat treatment. while the K_(Iscc) of specimens,which were isothermal uenched and tempered for structure of equal strength,may be much higher than specimens with both martensite and on-temperedbainite structures. The growth and extension of cracks may be changed whenthe tensile strength of steels σb=130-140 kgf/mm~2, in consequence, the K_(Iscc)increases markedly and da/dt decreases to greater extent. The threshold alues of stress corrosion cracking K_(Iscc)(ρ) was measured bymodified WOL-type notched specimens of various tip radius as follow:K_(Iscc)(ρ)={B ρ≤ρ_0 Aρ~(1/2) ρ>ρ_0where A and B are material constants. For ultra-high strength steel 0CrMnSiNi_2A, A=4170MPa, B=22MPa·m~(1/2) and ρ_0=1.027mm. This correlation conformsto theoretical treatment. According o the experimental results, the accidental failures of the fasteningscrew made of ultra-high strength steel 30CrMnSiNi_2 ere quantitatively ana-lyzed by linear elastic fracture mechanics. Therefore, the remedy to prevent thefailure of astening screw has been suggested. 收稿日期: 1980-02-18      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 褚武扬 李世琼 肖纪美 王枨 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1980/V16/I2/179 [1] Waid, G. M. and Ault, R. T., Stress Corrosion-New Approaches, Ed. by H. L. Craig, Phil. 1976, p. 199． [2] William, W. G., Hydrogen in Metals, Ed. by I. M. Bernstein and A. W. Thompson, ASM, New York, 1974, p. 115． [3] Sandog, C., Stress-Corrosion Cracking in High Strength Steels and in Titaniun and Aluminum Alloys, Ed. by B. F. Brown, Naval Research Laboratory, Washington, 1972, p. 80． [4] Novak, S. R. and Rolfe, S. T., J. Mater., 4 (1969) , 701． [5] 褚武扬,林实,王枨,田中卓,断裂韧性测试,科学出版社,1979,p.158． [6] Gerberich, W. W., Garry, J. and Lessar, J. F., Effect of Hydrogen on Behaviour of Materials, Ed. by A. W. Thompson and I. M. Bernstein, AIME, New York, 1976, p. 70． [7] Chu, W. Y. (褚武扬), Hsiao, C. M. (肖纪美), Li, S. Q. (李世琼), Scro. Met., 13(1979) , 106． [8] Tada, H., Paris, P. C. and Irwin, G. R., The stress Analysis of Cracks Handbook, Del Research Corporation, Hellartown, Pennsylvania, 1975, pp. 3, 19．T No related articles found! Viewed Full text Abstract Cited   Shared      Discussed