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金属学报  1996, Vol. 32 Issue (6): 617-623    
  论文 本期目录 | 过刊浏览 |
C90油管钢的氢损伤
于广华;程以环;陈红星;牛学军;乔利杰;褚武扬
北京科技大学;宝山钢铁公司
HYDROGEN-INDUCED FAILURE OF OIL-WELL TUBULAR STEEL C90
YU Guanghua; CHENG Yihuan; CHEN Hongxing; NIU Xuejun; QIAO Lijie; CHU Wuyang (University of Science and Technology Beijing; Beijing 100083)(Baoshan Corporation of Iron and Steel; Shanghai 201900)
引用本文:

于广华;程以环;陈红星;牛学军;乔利杰;褚武扬. C90油管钢的氢损伤[J]. 金属学报, 1996, 32(6): 617-623.
, , , , , . HYDROGEN-INDUCED FAILURE OF OIL-WELL TUBULAR STEEL C90[J]. Acta Metall Sin, 1996, 32(6): 617-623.

全文: PDF(550 KB)  
摘要: 对比研究了三种油管钢(宝钢的C90和日本的SM90及SM95)的氢致开裂性能.SM90,SM95和C90产生氢损伤的临界扩散氢质量分数(×10~(-6))分别为1.76,4.3和8.38;临界全氢质量分数(×10~(-6))分别为4.24,6.35和10.22三种钢在H_2S中的门槛应力σ_(th)/σ_s分别为0.64,0.80和0.85.三种油管钢抗氢损伤能力和抗氢致滞后断裂的能力是一致的,以C90为最好,它和氢的扩散系数无关.C90钢缺口试样氢致滞后断裂门槛值K_(IH)与可扩散的氢质量分数w_0有关,实验获得K_(IH)=46-12.51ln_(w0).理论分析和实验结果完全一致.对C90钢,当w_0≤4.8×10-6时,在任何K_I/K_C下均将获得韧窝断口;w_0≥7.6×10~(-6),K_I/K_C≥0.5时,则氢致韧断;K_I/K_C≤0.4时,则氢致脆断.
关键词 C90钢SM90钢SM95钢氢损伤氢致滞后断裂    
Abstract:Hydrogen-induced failure properties of three oil-well tubular steels(C90, SM90 and SM95) have been compared. The threshold diffusible hydrogen contents of steel SM90, SM95 and C90 for hydogen blistering are 1 .76, 4.3, and 8.38×10-6, respectively, and the total hydrogen contents 4.24, 6.35 and 10.22 × 10-6 respectively. The threshold stresses of hydrogen-induced fracture corresponding to SM90, SM95 and C90 in NACE solution are σ_(th) /σ_s = 0.64, 0.80 and 0.85, respectively. The threshold stress intensity of hydrogen- induced fracture for C90 decreases with the increase in the diffusible hydrogen content w_o and the experimental result which is consistant with theoretical analysis is as follows: K_(IH) = 46- 1 2. 5lnw_0.
Key words steel C90    steel SM90    steel SM95    hydrogen damage    hydrogen-induced delayed failure
收稿日期: 1996-06-18     
基金资助:国家自然科学基金
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