Multi-scale investigation on local strain and damage evolution of Al1050/steel/Al1050 clad sheet

Gu, Gang Hee; Kim, Rae Eon; Kim, Eun Seong; Kim, Yongju; Kwon, Hyuk-Sung; Ahn, Soung Yeoul; Seo, Min Hong; Kim, Hyoung Seop

doi:10.1016/j.jmrt.2022.07.056

Cited by 13 publications

(2 citation statements)

References 41 publications

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“…As shown in Fig. 5e , GND value development in the non-recrystallized and recrystallized regions as a strain was obtained from EBSD results of the aged sample with ε tr 5–25%; the accumulation of GNDs occurred predominantly in the recrystallized grains, leading to long-range internal stress, i.e., back stress 39 . The number of GNDs in the recrystallized grains increased continuously until they reached a strength level comparable to that of the non-recrystallized grains, hindering dislocation motion and developing long-range back stresses for HDI strengthening and strain hardening 40 – 42 .…”

Section: Resultsmentioning

confidence: 99%

Periodic spinodal decomposition in double–strengthened medium–entropy alloy

Park,

Haftlang,

Heo

et al. 2024

Nat Commun

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Achieving an optimal balance between strength and ductility in advanced engineering materials has long been a challenge for researchers. In the field of material strengthening, most approaches that prevent or impede the motion of dislocations involve ductility reduction. In the present study, we propose a strengthening approach based on spinodal decomposition in which Cu and Al are introduced into a ferrous medium–entropy alloy. The matrix undergoes nanoscale periodic spinodal decomposition via a simple one-step aging procedure. Chemical fluctuations within periodic spinodal decomposed structures induce spinodal hardening, leading to a doubled strengthening effect that surpasses the conventional precipitation strengthening mechanism. Notably, the periodic spinodal decomposed structures effectively overcome strain localization issues, preserving elongation and doubling their mechanical strength. Spinodal decomposition offers high versatility because it can be implemented with minimal elemental addition, making it a promising candidate for enhancing the mechanical properties of various alloy systems.

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Section: Resultsmentioning

confidence: 99%

Periodic spinodal decomposition in double–strengthened medium–entropy alloy

Park,

Haftlang,

Heo

et al. 2024

Nat Commun

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show abstract

“…Structures that exceed their design life are also susceptible to performance degradation. The above factors may lead to imperceptible damage, such as delamination and debonding in composites [ 8 ], or corrosion and impact in metals [ 9 ]. Therefore, the development of a robust NDT method is imperative to detect damage during the manufacturing stage, as well as to perform routine maintenance during the operational stage [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

A Review of Laser Ultrasonic Lamb Wave Damage Detection Methods for Thin-Walled Structures

Zheng

Luo

et al. 2023

Sensors

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Thin-walled structures, like aircraft skins and ship shells, are often several meters in size but only a few millimeters thick. By utilizing the laser ultrasonic Lamb wave detection method (LU-LDM), signals can be detected over long distances without physical contact. Additionally, this technology offers excellent flexibility in designing the measurement point distribution. The characteristics of LU-LDM are first analyzed in this review, specifically in terms of laser ultrasound and hardware configuration. Next, the methods are categorized based on three criteria: the quantity of collected wavefield data, the spectral domain, and the distribution of measurement points. The advantages and disadvantages of multiple methods are compared, and the suitable conditions for each method are summarized. Thirdly, we summarize four combined methods that balance detection efficiency and accuracy. Finally, several future development trends are suggested, and the current gaps and shortcomings in LU-LDM are highlighted. This review builds a comprehensive framework for LU-LDM for the first time, which is expected to serve as a technical reference for applying this technology in large, thin-walled structures.

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A simple physics-based constitutive model to describe strain hardening in a wide strain range

Kim

Bouaziz

et al. 2023

Int J Mater Form

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Multi-scale investigation on local strain and damage evolution of Al1050/steel/Al1050 clad sheet

Cited by 13 publications

References 41 publications

Periodic spinodal decomposition in double–strengthened medium–entropy alloy

Periodic spinodal decomposition in double–strengthened medium–entropy alloy

A Review of Laser Ultrasonic Lamb Wave Damage Detection Methods for Thin-Walled Structures

A simple physics-based constitutive model to describe strain hardening in a wide strain range

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