Resilience analysis of stress corrosion cracking in AISI 4340 steel under varying industrial electrochemical conditions

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2024-09-04 DOI:10.1016/j.ijpvp.2024.105304

Hasan Hamdan , Abdullah Alsit , Aghyad B. Al Tahhan , Hadi Jaber , Abdel-Hamid I. Mourad , Mariam Jaber , Mohammad Alkhedher

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Abstract

Stress Corrosion Cracking (SCC) presents a substantial challenge within industries where materials confront both mechanical stresses and corrosive environments. This work comprehensively examines SCC, incorporating the collection and analysis of a diverse dataset. The dataset encompasses pivotal parameters, including time to failure, corrosion rates, and electrochemical data. These parameters are meticulously garnered through Slow Strain Rate Testing on carefully prepared smooth, round tension specimens. The experiments are vigilantly overseen through a condition-based data acquisition and logging system, employing various Potentiostatic loads to mirror real-world electrochemical conditions. This research elucidates the intricate interplay between mechanical stresses, electrochemical processes, and corrosive conditions, rendering crucial insights for industries dependent on material integrity amidst formidable environmental challenges. Findings show that AISI 4340 Steel specimens exposed to a $+ 400 m V$ potential in NS4 solution exhibit an extended time to failure of approximately 7.4 days. Conversely, a $- 1200 m V$ potential in NS4 accelerates the failure to around 5.24 days. In a $3.5 w t %$ NaCl solution at $0 m V$ , the time to failure is approximately 5.76 days. On the other hand, an applied potential of $+ 400 m V$ increases the failure time to approximately 6.16 days. And an applied potential of $- 1200 m V$ accelerates the failure time to approximately 4.77 days. Specifically, the study reflects on structures submerged in water and those buried underground, represented by NS4 (Near Neutral Soil Simulating Solution) and $3.5 w . t . %$ NaCl solutions, simulating real-world corrosive conditions. Through a deeper comprehension of SCC, industries can better anticipate and mitigate the risks associated with material failure in harsh environmental conditions, advancing the safeguarding of critical infrastructures.

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不同工业电化学条件下 AISI 4340 钢应力腐蚀开裂的弹性分析

应力腐蚀开裂（SCC）在材料同时面临机械应力和腐蚀环境的行业中是一项巨大的挑战。本研究通过收集和分析各种数据集，对 SCC 进行了全面研究。数据集包含关键参数，包括失效时间、腐蚀速率和电化学数据。这些参数是通过对精心制备的光滑圆形拉伸试样进行慢应变速率测试而精心收集的。通过基于条件的数据采集和记录系统，采用各种恒电位载荷来反映真实世界的电化学条件，从而对实验进行严格的监督。这项研究阐明了机械应力、电化学过程和腐蚀条件之间错综复杂的相互作用，为在严峻的环境挑战中依赖材料完整性的行业提供了至关重要的见解。研究结果表明，暴露在 NS4 溶液中 +400mV 电位的 AISI 4340 钢试样的失效时间延长了约 7.4 天。相反，NS4 溶液中的 -1200mV 电位会将失效时间缩短至 5.24 天左右。在 0mV 的 3.5wt% NaCl 溶液中，失效时间约为 5.76 天。另一方面，施加 +400mV 的电位会将失效时间延长至约 6.16 天。而施加 -1200mV 的电位会将失效时间加速到约 4.77 天。具体而言，研究反映了浸没在水中的结构和埋在地下的结构，以 NS4（近中性土壤模拟溶液）和 3.5w.t.% NaCl 溶液为代表，模拟真实世界的腐蚀条件。通过加深对 SCC 的理解，各行业可以更好地预测和降低材料在恶劣环境条件下失效的相关风险，从而推进关键基础设施的保护工作。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.