Prediction of Corrosion in the Stainless Steel 316L in the Near-Surface Zone by Numerical Simulation

IF 2.3 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
JOM Pub Date : 2025-09-03 DOI:10.1007/s11837-025-07661-z
Sandra Friedrich, Thomas Mehner, Axel Dittes, Carolin Binotsch, Till Clausmeyer, Thomas Lampke, Birgit Awiszus
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引用次数: 0

Abstract

Austenitic stainless steels such as 316L (1.4404) are widely used in chemical plant engineering applications because of their exceptional corrosion resistance. However, forming processes significantly affect the material's microstructure, which in turn influences its corrosion behavior. Depending on the chemical composition and forming history, 316L tends to martensite formation during forming, which strongly impacts the corrosion behavior in narrow zones close to the surface. In forming processes with tool contact, local martensite formation occurs at least on the surface up to a few micrometers into the bulk of the material. The residual stress state, phase fractions, crystallite sizes and microstrain are experimentally determined by x-ray diffraction and numerically predicted. This paper introduces a numerical approach to predict corrosion rates of 316L after cold rolling. The method extends conventional forming simulations with empirically calibrated models that factor in the component surface and the near-surface microstructure. This approach facilitates the optimization of workpiece designs and forming processes and is also adaptable to other materials and forming operations.

316L不锈钢近表面腐蚀的数值模拟预测
奥氏体不锈钢如316L(1.4404)因其优异的耐腐蚀性而广泛用于化工厂工程应用。然而,成形过程会显著影响材料的微观结构,进而影响其腐蚀行为。根据化学成分和形成历史的不同,316L在形成过程中倾向于形成马氏体,这强烈影响了靠近表面的狭窄区域的腐蚀行为。在与刀具接触的成形过程中,局部马氏体形成至少发生在材料的表面,直到几微米。用x射线衍射测定了残余应力状态、相分数、晶粒尺寸和微应变,并进行了数值预测。本文介绍了一种预测316L冷轧后腐蚀速率的数值方法。该方法扩展了传统的成形模拟与经验校准的模型,在零件表面和近表面微观结构的因素。这种方法有利于工件设计和成形过程的优化,也适用于其他材料和成形操作。
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
JOM
JOM 工程技术-材料科学:综合
CiteScore
4.50
自引率
3.80%
发文量
540
审稿时长
2.8 months
期刊介绍: JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.
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