Properties and Structure of X30MnAlSi26-4-3 High Strength Steel Subjected to Dynamic Compression Processes

Śmiglewicz, A.; Jabłońska, Magdalena; Moćko, W.; Kowalczyk, Karolina; Hadasik, E.

doi:10.1515/amm-2017-0332

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…The main elements that determine the stability of the retained austenite are carbon and manganese [8][9][10][11]. Since the C content is usually limited due to welding reasons, Mn plays an important role in TRIP (Transformation Induced Plasticity) steels containing from 10% to 15% of retained austenite [12][13][14][15][16] and in the formation of the austenitic phase in high-manganese steels showing the TRIP and / or TWIP (Twinning Induced Plasticity) effect [17,18]. In this case, stabilization of homogeneous austenite requires the addition of Mn in the range from 15% to 30% [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Effect of hot deformation and isothermal holding temperature on retained austenite characteristics in 3-5% Mn multiphase steels

Opiela,

Grajcar,

Pakieła

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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The paper presents stress-strain characteristics recorded during the four-step compression of axisymmetric samples in the Gleeble thermomechanical simulator. The hot deformability of three steels with Mn concentrations of 3%, 4% and 5% was compared. The analysis of the influence of plastic deformation and Mn content on the microstructure of alloys, and in particular, on a fraction and morphological features of the retained austenite, was performed. The proportion of the retained austenite was determined by the X-ray diffraction method. It was found that the content of Mn in the range from 3% to 5% does not have a significant impact on the high-temperature resistance of the steel during compression tests, but it has a significant influence on the microstructure of the steel and the fraction of retained austenite. The optimal conditions for maximizing the proportion of retained austenite were obtained at the temperature of 400 °C, and it decreased with increasing Mn concentration in the steel. It has been shown that it is related to the redistribution of carbon from the remaining austenite fraction with an increase in the manganese content. The mechanical properties were determined on the basis of hardness measurements.

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Section: Introductionmentioning

confidence: 99%

Effect of hot deformation and isothermal holding temperature on retained austenite characteristics in 3-5% Mn multiphase steels

Opiela,

Grajcar,

Pakieła

2023

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…The plasticity of steel is influenced too. The reason for it is not only dynamic strain but some increase in temperature during the high rate deformation [7,8]. This temperature leads to activation of temperature dependent strengthening/softening mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Strain Rate Dependent Mechanical Stability of Retained Austenite in Hot-Rolled Medium-Mn Sheet Steels

Morawiec

Grajcar

2021

MSF

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The paper presents microstructural and mechanical results of medium manganese steel deformed under high strain rates. The rotary hammer tests at strain rates of 250, 500 and 1000 s-1 were applied. Mechanical properties under dynamic tensile loads were determined. According to the obtained results, when strain rate increased the yield point of the steel increased. An opposite trend was present regarding total elongation. In case of tensile strength, its level is similar for all analyzed deformation rates. The microstructure of the steel after the dynamic tensile test is composed of bainite, martensite and martensitic-austenitic islands. The strain-induced martensitic transformation was identified in microscopic investigations.

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“…There is only the information on research of welded joints made using laser beam, MIG technology and gas tungsten arc welding (GTA), [34 -36]. FSW can be an alternative to conventional methods for joining stainless steel sheets, which are widely used in aviation and automotive industry in production of fuel tanks, exhaust system components and structural parts operating at ambient temperature, [37,38].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Więckowski¹,

Lacki²,

Adamus³

2019

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The aim of the study was to analyse mechanical properties and microstructure of joints obtained using friction stir welding (FSW) technology. The focus of the study was on overlap linear FSW joints made of 1.4541 DIN 17441 steel sheets with thickness of 1.2 mm. Tools used during friction stir welding of steel joints were made of W-Re alloy. The joints were subjected to visual inspection and their load bearing capacity was evaluated by means of the tensile strength test with analysis of joint breaking mechanism. Furthermore, the joints were also tested during metallographic examinations. The analysis performed in the study revealed that all the samples of the FSW joints were broken outside the joint area in the base material of the upper sheet metal, which confirms its high tensile strength. Mean load capacity of the joints was 15.8 kN. Macroscopic and microscopic examinations of the joints did not reveal significant defects on the joint surface and in the cross-sections.

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Properties and Structure of X30MnAlSi26-4-3 High Strength Steel Subjected to Dynamic Compression Processes

Cited by 6 publications

References 18 publications

Effect of hot deformation and isothermal holding temperature on retained austenite characteristics in 3-5% Mn multiphase steels

Effect of hot deformation and isothermal holding temperature on retained austenite characteristics in 3-5% Mn multiphase steels

Strain Rate Dependent Mechanical Stability of Retained Austenite in Hot-Rolled Medium-Mn Sheet Steels

Archives of Metallurgy and Materials

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