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Cracked gas injection pipeline stress corrosion testing of hydrogen sulfide

Hydrogen stress corrosion ability. (-F ~ g334 pages) Z. \ Companion is Z. \ Companion is Z \ Lu Shu displacement S / mm Figure 3-4O ℃ Fs curve when the Fig. 3ThecurveofF-sat - 40 ℃ Bin a crack, the crack then the crack extended steady-state mode, as shown in Figure 4. Fs curves of type Ⅲ in a 100 \Z. \ Bai is (a) I-type (b) II-type displacement / mmFig · Figure 4 - 84 \4ThecurveofF-sat for a 84 \s curve of Fig. 5ThecurveofF-satductile-brittletransitiontemperatureof - 100'C curve on the platform, unstable propagation of the crack does not occur at this time,[link widoczny dla zalogowanych], the maximum load at the formation of cracks, crack down load with steady growth, as shown in Figure 3. Fs curve type Ⅱ transition zone corresponding to the crack after reaching the maximum load generated at a load of unstable propagation, unstable crack displacement S (c) Ⅲ type Fs Figure 6 three typical curves 6ThreekindoftypicF-scurves (1) by the Analysis of the test to know in order to impact energy and fiber cross-section rates are combined with fracture surface of a 921A steel, ductile-brittle transition temperature for the i00 ℃, the steel has excellent low temperature toughness. (2) fracture surface analysis shows that the corresponding platform for the 100 on the fibrous ductile; into the transition zone, the fracture occurred crystallization zone, subject to cleavage fracture + mixed dimple; corresponds completely under the platform of crystalline fracture. (3) F_s curve shows that as the temperature decreases, the crack propagation mode from the steady expansion of development to varying degrees of mixed-mode steady-state and non-steady-state expansion, and gradually developed to the unsteady expansion. References: [13GB/T229-1994, metal Charpy notch impact test [s]. (Continued from p. 327) (2) crack initiation at the specimen has obvious characteristics of intergranular corrosion damage,[link widoczny dla zalogowanych], with secondary cracks and corrosion pits. References: E1] Yangxue Bin, Hu Xiulian, Chen Lin, et al. Heavy oil thermal recovery steam injection pipe burst failure analysis [J]. Petroleum Machinery, 1997,25 (6) :24-25. [2] Wen Jianping,[link widoczny dla zalogowanych], Ping Qingwei, Wen Tao, et al. Thermal recovery steam injection pipeline corrosion and security analysis [J]. Corrosion Science and Protection Technology, 2003,[link widoczny dla zalogowanych],15 (5) :304 - 306. 1-3] LiaoCM, LeeJLEffectofMolybdenunlonSulfideStressCrakingResistanceofLow-AlloySteelsEJ]. Corrosion, 1994,50 (9) :695-704. [4] ValentiniR, Solina eight InfluenceofMicrostructureonHydrogenEmbrittlementBehaviourof2-25Cr-lMo · 334 · Steel [J]. MaterialsScienceandTechnology, 1994,10 (10) :908-914. [5] Liu was typical. Wet hydrogen sulfide with low alloy high strength steel [J]. Petroleum Chemical Equipment Technology, 1998,19 (5) :57 - 61. [6] GB/T15970.6-1998, metals and alloys Stress corrosion [s]. [7] Wu-Yang Chu. Hydrogen damage and delayed fracture I-M]. Beijing: Metallurgical Industry Press, 1998. 37O a 374. [8] Jin Xiaojun, TRANSACTIONS,[link widoczny dla zalogowanych], Chang Yu-wind, and so on. X65 pipeline steel welded joints H: S stress corrosion and its finite element analysis [J]. Chinese Society for Corrosion and Protection, 2004,24 (1): 2O-24. [9] TRANSACTIONS OF THE CHINA, Wang Yong, Zhao people. Corrosion of metal structures I-M]. Dongying: Petroleum University Press ,2000.113-126. [1O-I Wen Jianping, Ping Qingwei, Libo Ming, et al. Use the original high-pressure steam injection pipe for the feasibility of re-injection of sewage pipe [J]. TESTING A physical volumes, 2004,40 ( Cool

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