Characterization of Texture Evolution during Recrystallization by Laser-Induced Transient Thermal Grating Method

Yin, Anmin; Xu, Xiaodong; Zhang, Shuyi; Glorieux, Christ; Shu, Xuedao; Wang, Yufan; Yan, Xuejun

doi:10.3390/met9030288

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…Interstitial free (IF) steel provides a combination of deep drawability, formability, and weldability, and hence has been widely used in the automobile industry in recent years [1][2][3]. As a type of ultralow carbon ferritic steel in which the content of interstitial elements (C and N) is strictly controlled [4], the properties of IF steel matrix phase make a fundamental contribution to the properties of the steel.…”

Section: Introductionmentioning

confidence: 99%

Ab Initio Calculations on Elastic Properties of IF Steel Matrix Phase at High Temperature Based on Lattice Expansion Theory

Long

Zhang

et al. 2020

Metals

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Elucidating the evolution law of the elastic properties of the matrix phase is of great significance for the control of steel properties and quality during continuous casting and subsequent heat treatment. In this paper, thermal expansion experiments and ab initio calculations are used to study the elastic properties of the interstitial free (IF) steel matrix phase in different magnetic states and crystal structures. The results show that the bulk modulus B and the tetragonal shear elastic constant C’ for the entire temperature range decrease with increasing temperature, but C44 is the opposite. While from paramagnetic (PM) to ferromagnetic (FM) state, C’(C44) have changed ~188% (~27%), B increases by ~55% during the crystal structure change (fcc→bcc). With the FM to PM state, the Zener anisotropy parameter increases sharply, and Young’s modulus decreases significantly in the [001] direction; the maximum difference is ~76 GPa. The evolution rate of average Young’s modulus in single bcc-phase FM (fcc-phase PM) range reaches ~5.5(~5.6) × 10−2 GPa K−1. The research provides an effective method for ab initio calculation of the elastic properties of interstitial free and ultra-low carbon steels at high temperature, also furnishing a basis for the application of ab initio calculations to the high temperature performance of steel materials.

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Section: Introductionmentioning

confidence: 99%

Ab Initio Calculations on Elastic Properties of IF Steel Matrix Phase at High Temperature Based on Lattice Expansion Theory

Long

Zhang

et al. 2020

Metals

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Measurement of micro-region elastic anisotropy in textured metal by laser-ultrasonics

et al. 2020

AIP Advances

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Measurement of elastic anisotropy in textured polycrystalline metals is very difficult, especially the nondestructive testing of the elastic anisotropy of micro-regions. In this paper, the angular dependence of surface acoustic wave velocity affected by texture in micro-regions is measured by the laser ultrasonic method, and a method for calculating elastic anisotropy based on angular dependence of surface acoustic wave velocity is discussed. The results show that the elastic anisotropy calculated by the angular dependence of the surface acoustic wave velocity fits well with the measured elastic anisotropy, and the elastic anisotropy in micro-scale regions can be characterized well by the laser ultrasonic method. In addition, a calculation model of the elastic modulus at different temperatures based on the elastic modulus at 25 °C is given, and the elastic modulus at different temperatures is also calculated, which fits well with the experiment results. This model can be used for nondestructive testing of the elastic modulus in micro-regions.

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Characterizing microscale energy transport in materials with transient grating spectroscopy

Choudhry

Kim

Adams

et al. 2021

Journal of Applied Physics

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Microscale energy transport processes are crucial in microelectronics, energy-harvesting devices, and emerging quantum materials. To study these processes, methods that can probe transport with conveniently tunable length scales are highly desirable. Transient grating spectroscopy (TGS) is such a tool that can monitor microscale energy transport processes associated with various fundamental energy carriers including electrons, phonons, and spins. Having been developed and applied for a long time in the chemistry community, TGS has regained popularity recently in studying different transport regimes in solid-state materials. In this Tutorial, we provide an in-depth discussion of the operational principle and instrumentation details of a modern heterodyne TGS configuration from a practitioner’s point of view. We further review recent applications of TGS in characterizing microscale transport of heat, charge, spin, and acoustic waves, with an emphasis on thermal transport.

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Characterization of Texture Evolution during Recrystallization by Laser-Induced Transient Thermal Grating Method

Cited by 4 publications

References 22 publications

Ab Initio Calculations on Elastic Properties of IF Steel Matrix Phase at High Temperature Based on Lattice Expansion Theory

Ab Initio Calculations on Elastic Properties of IF Steel Matrix Phase at High Temperature Based on Lattice Expansion Theory

Measurement of micro-region elastic anisotropy in textured metal by laser-ultrasonics

Characterizing microscale energy transport in materials with transient grating spectroscopy

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