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عنوان فارسی مقاله:
خوردگی تنشی در صفحات Type.316l از یک مبدل حرارتی
عنوان انگلیسی مقاله:
Stress corrosion cracking in Type.316 plates of a heat exchanger
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Stress corrosion cracking (SCC) is cracking due to a process involving conjoint corrosion and straining of a metal due to residual or applied stresses. SCC is known as an insidious form of corrosion failure and it results in a significant drop in the mechanical strength only with little metal loss. Another important point is that although this failure cannot be recognized by casual inspection, it can lead to a catastrophic damage of components and structures such as the rupture of high-pressure gas transmission pipes, the explosion of boilers and the destruction of power stations and oil refineries. In phenomenological viewpoint, the occurrence of SCC depends on three simultaneous requirements; a susceptible material, an environment that causes SCC for that material, and sufficient tensile stress to induce SCC. Three principal mechanisms of SCC are active path dissolution (accelerated corrosion along a path of higher than normal corrosion susceptibility such as the grain boundary), hydrogen embrittlement and film-induced cleavage. However, SCC is an avoidable process by preventing the specific combinations of metal and environment that are subject to the problem. Heat exchangers are common equipments in many industries employed for the cooling/heating purposes. The plate heat exchanger (PHE) or plate and frame heat exchanger is a type of heat exchangers that comprises of the special metal plates and sealing polymeric gaskets; when two fluids with different temperatures pass over two opposite sides of the plates, the heat transfers from the hot side to the cold side. Excellent heat transfer characteristics, easy maintenance and fastmodification are the advantages of this type of heat exchangers which make them a widely used and important part of many industries such as petrochemical complexes [1]. Austenitic stainless steels are widely used in manufacturing of the special plates for PHE. The main benefit of the stainless steels is the corrosion resistivity. However, as previously mentioned, they are susceptible to local corrosion like pitting corrosion and stress corrosion cracking (SCC) [2–4]. Cooperation of stress and specific media such as the chloride or sulfide containing media is mandatory for SCC of susceptible materials. The simultaneous presence of mechanical stress and chloride or sulfide ions in environment accelerates the corrosion failure of metal.
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کلمات کلیدی:
Stress Corrosion Cracking of Annealed Type 316 Stainless Steel in ... corrosionjournal.org › CORROSION › August 1990 by J Congleton - 1990 - Cited by 9 - Related articles Abstract. Slow strain rate tests have been performed on annealed type 316 (UNS S31600) stainless steel in 5 ppm chloride content water at temperatures from ... Stress Corrosion Crack Growth in Type 316 Stainless Steel in ... corrosionjournal.org › CORROSION › November 2007 by QJ Peng - 2007 - Cited by 30 - Related articles Q. J. Peng, S. Teysseyre, P. L. Andresen, G. S. Was, Stress Corrosion Crack Growth in Type 316 Stainless Steel in Supercritical Water, CORROSION. 2007 ... Stress Corrosion Cracking of Type 316 and 316L Stainless Steel in ... https://www.researchgate.net/.../228413513_Stress_Corrosion_Cracking_of_Type_31... Stress corrosion cracking (SCC) was observed in lots of Japanese BWR components made of L grade stainless steels (SS) with very low carbon content. Research paper: Stress corrosion cracking in Type.316 plates of a ... https://www.researchgate.net/.../299336282_Stress_corrosion_cracking_in_Type316_pl... In Jam petrochemical complex (JPC), Iran, the plates (ASTM A.240 Type.316) of some heat exchangers have been damaged due to the occurrence of cracks at ... Stress corrosion cracking of weldments of AISI Type 316 stainless steel onlinelibrary.wiley.com/doi/10.1002/maco.19870380405/full by H Shaikh - 1987 - Cited by 12 - Related articles Abstract. The weldments of AISI Type 316 stainless steel prepared by the tungsten inert gas (TIG) and manual metal arc (MMA) welding processes, were tested ... Stress corrosion cracking - facts and how to reduce the risk — Sandvik ... smt.sandvik.com/en/materials.../corrosion/wet-corrosion/stress-corrosion-cracking-scc/ There are several types of stress corrosion cracking (SCC), for example, ... 304 and 316 austenitic steels have limited resistance to stress corrosion cracking ... Chloride Stress Corrosion Cracking - SSINA: Stainless Steel: Corrosion www.ssina.com/corrosion/stress-corrosion-cracking.html This mode of attack is termed stress corrosion cracking (SCC). ... guidelines for the chloride SCC susceptibility of types 304L and 316L stainless steel in neutral ...
