Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing

Xia, Peikang; Sabirov, I.; Molina-Aldareguia, J.M.; Verleysen, Patricia; Petrov, Roumen

doi:10.1016/j.msea.2018.09.015

Cited by 14 publications

(9 citation statements)

References 46 publications

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“…It can be concluded that the impact crashworthiness of the 1 mm thick 304 SS is 130 J. This value is higher than that of the quenching and partitioning (Q&P) steel showing the impact resistance of 110 J in our previous publication [25]. However, in another report by J.A.…”

Section: Uniaxial Tensile Properties Of the Studied 304 Ssmentioning

confidence: 54%

Microstructure evolution and adiabatic heating during dynamic biaxial deformation of a 304 stainless steel

Xia

Rodríguez

Sabirov

2020

Materials Science and Engineering: A

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This study focuses on the microstructure evolution and adiabatic heating during high strain rate biaxial deformation of a 304 stainless steel. Adiabatic heating is measured in situ during drop weight impact testing of the studied material. The considerable temperature rise induced by adiabatic heating (up to 184.3 °C when impacted with 140 J) is detected. The microstructure was analyzed by X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and high resolution transmission electron microscopy (HRTEM) techniques. Dislocation glide, twinning and austenite-martensite phase transformation are operating during high strain rate plastic deformation. The XRD analysis shows a steady increase of α'-martensite fraction (up to 36 %) with plastic strain (up to 0.8), whereas the fraction of intermediate εmartensite remains negligible (< 0.5 %). The decreasing stacking fault energy (SFE) with temperature along with biaxial stress compensated the possible impediment of martensitic transformation caused by adiabatic heating. Nanotwins having a width of ~5 nm to ~20 nm are inhomogeneously distributed in the microstructure. Interrelationship between adiabatic heating, deformation mechanisms and microstructure evolution is discussed.

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Section: Uniaxial Tensile Properties Of the Studied 304 Ssmentioning

confidence: 54%

Microstructure evolution and adiabatic heating during dynamic biaxial deformation of a 304 stainless steel

Xia

Rodríguez

Sabirov

2020

Materials Science and Engineering: A

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“…Less retained austenite in the EBSD method is due to a limited resolution of the analysis. Hence, the smallest blocky retained austenite grains and thin layers of this phase cannot be revealed [29,30,31]. These microstructural components can be detected using the X-ray diffraction [15,25].…”

Section: Resultsmentioning

confidence: 99%

“…For this purpose, the electron backscatter diffraction (EBSD) technique can be successfully applied. The EBSD method is useful for determining a volume fraction of microstructural constituents: bainite, ferrite, and austenite [29,30,31,32,33]. Petrov et al [30] used this method to determine an amount of retained austenite in a TRIP-assisted steel deformed to 10%.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Mechanical Stability of Retained Austenite in Thermomechanically Processed Medium-Mn Steel

Grajcar

Kilarski²,

Kozłowska

et al. 2019

Materials

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A microstructure evolution of the thermomechanically processed 3Mn-1.5Al type steel and mechanical stability of retained austenite were investigated during interrupted tensile tests. The microstructural details were revealed using scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) techniques. It was found that the strain-induced martensitic transformation began in central regions of the largest blocky-type grains of retained austenite and propagated to outer areas of the grains as the deformation level increased. At rupture, the mechanical stability showed only boundaries of fine blocky grains of γ phase and austenitic layers located between bainitic ferrite laths. The effects of various carbon enrichment, grain size, and location in the microstructure were considered. The martensitic transformation progress was the highest at the initial stage of deformation and gradually decreased as the deformation level increased.

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“…3. Schematic presentation of a cross-sectioned sample [53]. The area marked by white square refers to the region selected for EBSD and TEM characterization.…”

Section: Mechanical Property Characterizationmentioning

confidence: 99%

Adiabatic heating and energy absorption capability of an advanced high strength steel during drop weight impact testing

Xia

Palomar

Sabirov

2020

Materials Science and Engineering: A

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The manuscript focuses on the energy absorption capability of an advanced high strength steel during drop weight impact testing. The in-situ measurements of temperature during impact resistance testing of samples revealed intensive adiabatic heating effect with the peak temperature of 225 ℃ at the top of the dome resulting in the local softening effect. The drop weight impact resistance of the material under present testing condition is 90 J. Microstructural characterization demonstrated that dislocation glide and formation of substructure is the main deformation mechanism. Analysis of fracture surface of cracked samples (tested with the impact energy of > 90 J) revealed ductile failure mode. The energy required for formation of fracture surface was calculated by quantitative analysis of the 3D digital models generated using microscopy images of the fracture surface taken from different angles. This energy is negligibly lower compared to the total energy spent for plastic deformation of the material.

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Mechanical behavior and microstructure evolution of a quenched and partitioned steel during drop weight impact and punch testing

Cited by 14 publications

References 46 publications

Microstructure evolution and adiabatic heating during dynamic biaxial deformation of a 304 stainless steel

Microstructure evolution and adiabatic heating during dynamic biaxial deformation of a 304 stainless steel

Microstructure Evolution and Mechanical Stability of Retained Austenite in Thermomechanically Processed Medium-Mn Steel

Adiabatic heating and energy absorption capability of an advanced high strength steel during drop weight impact testing

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