Pitting corrosion behavior of a laser hardened, high-alloyed steel
Pitting corrosion behavior of a laser hardened, high-alloyed steel
复制标题
激光硬化高合金钢的点蚀行为
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
T. Lampke
中科院分区：
文献类型：
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作者：
T. Mehner;P. Landgraf;E. Haack;I. Scharf;T. Grund;T. Lampke
与传统硬化工艺相比，激光硬化在加工时间和能耗方面具有显著优势，尤其是对于小批量。此外，可以针对不同的应用对功能特性进行局部调整。然而，激光处理区域和周围未处理基材中的微观结构状态的差异可能导致腐蚀问题。在本文中，高合金，激光处理的X153CrMoV12（1.2379）钢在肉类加工业中使用的腐蚀行为进行了研究，在汉克斯平衡盐溶液，模拟体液，全球浸泡试验和局部的微电化学研究，取决于在激光点的测量温度。发现了点蚀敏感性的差异以及与热力学计算的相关性，从而可以对与应用相关的腐蚀行为进行数值估计。
Laser hardening provides significant advantages in processing time, and energy consumption compared to conventional hardening processes, especially for small batches. In addition, the functional characteristics can be adjusted locally for different applications. However, the differences of the microstructural states in the laser-treated areas and the surrounding untreated base material may result in corrosion issues. In this paper, the corrosion behavior of the high-alloyed, laser-treated steel X153CrMoV12 (1.2379) used in the meat-processing industry is investigated in Hanks’ balanced salt solution, a simulated body fluid, globally by immersion tests and locally by microelectrochemical investigations, depending on the measured temperature in the laser spot. Differences of the susceptibility to pitting, as well as correlation to thermodynamic calculations were found. Thus, the application-related corrosion behavior can be estimated numerically.