Non-destructive characterisation of pearlitic steel microstructure at room temperature and in-situ microstructure development during heat treatment using electromagnetic sensors

IF 4.1 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Ndt & E International Pub Date : 2024-07-18 DOI:10.1016/j.ndteint.2024.103199

L. Zhou , F. Wu , M.A. Jolfaei , S. Hobson , C.L. Davis

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引用次数: 0

Abstract

Pearlitic steels are important engineering materials in various high-strength applications. Their mechanical properties are influenced by microstructure control using chemical composition and/or thermomechanical processing. In the current study, a novel, non-destructive technique is presented for the characterisation of key microstructure parameters that are essential for strength, both at room temperature and during dynamic heat treatment. The pearlite interlamellar spacing in a 0.81 wt% C steel has been accurately measured at room temperature using an electromagnetic (EM) sensor. Furthermore, the spheroidisation process in 100Cr6 pearlitic steel has been monitored at elevated temperatures. A strong linear relationship between the EM sensor signal and the pearlite interlamellar spacing is demonstrated, indicated by an R² value of 0.91. Additionally, the capability of this method to track the spheroidisation process in real-time during constant heat treatment offers potential avenues for process optimisation in pearlitic steels.

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利用电磁传感器对珠光体钢室温下的微观结构和热处理过程中的原位微观结构发展进行无损表征

珠光体钢是各种高强度应用中的重要工程材料。它们的机械性能受到使用化学成分和/或热机械加工控制微观结构的影响。在本研究中，介绍了一种新颖的非破坏性技术，用于表征在室温和动态热处理过程中对强度至关重要的关键微观结构参数。使用电磁（EM）传感器可在室温下精确测量 0.81 wt% C 钢中的珠光体层间间距。此外，还监测了 100Cr6 珠光体钢在高温下的球化过程。电磁传感器信号与珠光体层间间距之间存在很强的线性关系，R2 值为 0.91。此外，这种方法能够在恒定热处理过程中实时跟踪球化过程，为珠光体钢的工艺优化提供了潜在的途径。

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

Ndt & E International 工程技术-材料科学：表征与测试

CiteScore

7.20

自引率

9.50%

发文量

121

审稿时长

55 days

期刊介绍： NDT&E international publishes peer-reviewed results of original research and development in all categories of the fields of nondestructive testing and evaluation including ultrasonics, electromagnetics, radiography, optical and thermal methods. In addition to traditional NDE topics, the emerging technology area of inspection of civil structures and materials is also emphasized. The journal publishes original papers on research and development of new inspection techniques and methods, as well as on novel and innovative applications of established methods. Papers on NDE sensors and their applications both for inspection and process control, as well as papers describing novel NDE systems for structural health monitoring and their performance in industrial settings are also considered. Other regular features include international news, new equipment and a calendar of forthcoming worldwide meetings. This journal is listed in Current Contents.