循环加载下X70钢韧性变化的压磁行为

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Evaluation Pub Date : 2023-04-01 DOI:10.32548/2023.me-04288

S. Bao, Zhengye Zhao, Yan Li

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引用次数: 0

摘要

本研究的目的是研究X70管线钢在循环载荷下韧性变化所对应的磁场特性。在一系列应力控制的循环载荷后，对试样进行静态拉伸试验。在测试过程中同时记录了磁场的变化。结果表明，循环载荷会降低材料的韧性。静态拉伸试验中获得的磁场应变曲线的初始值和斜率与循环载荷的数量有关。磁场和应力-应变曲线的演变可以反映材料韧性的变化。与应力-应变曲线相比，磁场更明显地表明了疲劳退化过程。磁场对韧性的高灵敏度可以用来估计钢的疲劳损伤程度。

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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Piezomagnetic Behavior Corresponding to the Variations of the Toughness of X70 Steel Under Cyclic Loadings

The goal of this study is to investigate magnetic field characteristics corresponding to variations of the toughness of X70 pipeline steel under cyclic loading. After a series of stress-controlled cyclic loadings, the specimens were subjected to static tensile tests. Changes in the magnetic field were recorded simultaneously during the test. The results suggest that cyclic loadings will reduce the toughness of the material. The initial value and slope of the magnetic field-strain curve obtained in the static tensile test are related to the number of cyclic loadings. The evolutions of magnetic field and the stress-strain curve can reflect variations in the toughness of materials. Compared with the stress-strain curve, the magnetic field demonstrates the fatigue degradation process more markedly. The high sensitivity of the magnetic field to toughness may be used to estimate the degree of fatigue damage of steel.

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来源期刊

Materials Evaluation 工程技术-材料科学：表征与测试

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.