Effect of loading speed on the stress-induced magnetic behavior of ferromagnetic steel

Bao, Sheng; Gu, Yifan; Fu, Minyue; Zhang, Da; Hu, Shengnan

doi:10.1016/j.jmmm.2016.09.092

Cited by 14 publications

(6 citation statements)

References 22 publications

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“…According to previous research, the SMLF intensities of ferromagnetic materials are random in the absence of stress [13], but they change to linear pattern as the stress increases in elastic state [14][15][16]. The SMLF intensities vary on a small scale once the applied stress reaches the yield point and plastic deformation state [17,18]. A sharp change of Hp(y) signal from negative to positive values and a zero-crossing point at the fracture location [12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 83%

“…As the tensile load increases, the amplitude of dHp(x)/dX and dHp(y)/dX peaks also increases. The piezomagnetic effect causes the magnetic properties of the material to become stronger as the stress level rises [15,29,30], as the magnetic domain walls within the specimen are able to rotate freely and easily [17][18][19]. As shown in Figure 4, there were no significant changes in Hp(x) and Hp(y) as the tensile stress reached the yield point.…”

Section: Elastic Statementioning

confidence: 99%

“…The SMLF intensities vary on a small scale once the applied stress reaches the yield point and plastic deformation state [17,18]. A sharp change of Hp(y) signal from negative to positive values and a zero-crossing point at the fracture location [12][13][14][15][16][17][18][19]. The findings of previous research have focused on the influence of material deformation states on SMLF intensities in the normal component, as compared to both the normal and tangential components.…”

Section: Introductionmentioning

confidence: 99%

“…Bao et al, [18] stated that the characteristics of the abnormal distribution of SMLF intensities of 30CrNiMo8 steel can be used to find the exact location and shape of a defect. Xu et al, [20], who investigated the response of SMLF intensities on a cracked Q345 steel specimen subjected to tensile load, the authors found that the peak and peak trough appears in the tangential and normal components, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Tensile Stress on Self-Magnetic Leakage Field in Carbon Steel Pipe Material

Nur Akmal Hakim Jasni,

Mohamed Azlan Suhot,

Mohd Hisham Abu Bakar

et al. 2023

ARAM

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Metal magnetic memory (MMM) technique is a promising non-destructive technology for determining the state of material deformation and structural defect in carbon steel pipe by measuring the self-magnetic leakage field (SMLF). The relationship between SMLF and stress concentration of cracked specimens has been extensively researched, but little is known about corrosion defects in carbon steel pipes, such as circular holes. A static tensile test and MMM measurement were performed on the ASTM A106 Gr. B steel to investigate its applicability in predicting material deformation state and structural defect. The tensile load makes the distribution of self-magnetic leakage field, SMLF intensities in the elastic stage regular. In the defect zone of defective specimens, a peak-trough in the SMLF intensity in the tangential component, Hp(x), and a peak in the normal component, Hp(y), were observed. As yield approached, the SMLF intensities remained unchanged. During plastic deformation, dislocation slip and dislocation interaction rarely change the SMLF intensities and its gradient. The SMLF intensities and its gradient rise as the tensile load approach its ultimate strength. The distribution of SMLF intensities show a peak feature in the Hp(x), and a peak-trough in the Hp(y) as the specimen fractures. Variations in the magnetic and stress fields of carbon steel pipe are caused by structural defect. As a result, the SMLF intensity varies. The method described in this study can be applied to MMM technique to detect material deformation states and defect formation in ASTM A106 Gr. B steel at low cost and with minimal equipment.

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Section: Introductionmentioning

confidence: 83%

Section: Elastic Statementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Tensile Stress on Self-Magnetic Leakage Field in Carbon Steel Pipe Material

Nur Akmal Hakim Jasni,

Mohamed Azlan Suhot,

Mohd Hisham Abu Bakar

et al. 2023

ARAM

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“…金属磁记忆检测技术是以压磁效应为基础的新型无损检测技术, 它通过测量铁磁性材料的磁记忆信号来探测材料中的应力集中区域和微型损伤, 可用来评估铁磁性材料的早期损伤 [10] . 这项技术首先由Dubov [11] 于1997年提出, 此后研究者们开展了一系列有关无损检测的理论和试验研究 [12,13] Dubov [11] 指出铁磁性材料应力集中区域的切向磁信号会达到局部最大, 而法向磁信号会有归零的现象. Zhang等 [14] 研究了带肋钢筋疲劳损伤与压磁信号之间的关系, 通过对HRB400加肋钢筋进行单轴静态加载和循环拉伸加载试验, 证明了这种无损检测技术对分析带肋钢筋疲劳过程的有效性.…”

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Effect of defects on magnetostriction and magnetic moment evolution of iron thin films

Zhang¹,

Long²,

Jing-Yi³

et al. 2022

Acta Phys. Sin.

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Magnetostrictive materials have broad application prospects in sensing, control, energy conversion, and information conversion. The improving of the performances and applications of such materials has become a research hotspot, but defects will inevitably appear in the preparation and use of materials. In this study, the magnetostrictive structure model of iron elemental material with no defect or hole defect or crack defect is established by the molecular dynamics method. The influences of different defects on the magnetostrictive behavior of iron thin films are analyzed, and the mechanism of the influence of defects on the magnetostrictive behavior is depicted from the perspective of atomic magnetic moment. The results show that the films with 60 × 2 × 1 defects in the center are the easiest to reach saturation magnetostriction, and the magnetostriction is the least after reaching saturation, with respect to the films without defects. The films with 10 × 10 × 1 and 2 × 60 × 1 defects in the center require a larger magnetic field to approach to saturation, and the magnetostriction of the film with 2 × 60 × 1 defects in the center reaches a maximum value after saturation. This is because the defects will affect the magnetic moment of the surrounding atoms and make them deflect to the direction parallel to the defects, thus affecting the magnetostriction of the iron thin film. Among them, the hole defects have less influence on the magnetostriction, while the crack defects have stronger influence on the magnetostriction. The direction of the crack also has an effect on the magnetostriction of Fe thin film. When the crack is parallel to the direction of magnetization, the maximum magnetostriction of the film in the direction of magnetization from the initial state to the saturation of magnetization will decrease. When the crack is perpendicular to the direction of magnetization, the maximum magnetostriction of the film in the direction of magnetization from the initial state to the saturation of magnetization will increase. These results suggest that the defects affect the magnetostriction of the model as a whole during magnetization by affecting the initial magnetic moment orientation of the surrounding atoms.

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State of the Art of the MMM Technique

Huang

Qian

Liu

2021

Metal Magnetic Memory Technique and Its Applications in Remanufacturing

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Effect of loading speed on the stress-induced magnetic behavior of ferromagnetic steel

Cited by 14 publications

References 22 publications

Effect of Tensile Stress on Self-Magnetic Leakage Field in Carbon Steel Pipe Material

Effect of Tensile Stress on Self-Magnetic Leakage Field in Carbon Steel Pipe Material

Effect of defects on magnetostriction and magnetic moment evolution of iron thin films

State of the Art of the MMM Technique

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