Hot compression deformation behavior of extruded ZK61M magnesium alloy and establishment of constitutive equation

Chen, Xianglong; Xu, Chunguo; Jiang, Hong; Qin, Sixiao

doi:10.1016/j.promfg.2020.08.114

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…Specifically, at a constant temperature of 1423 K, and under different strain rates (as shown in figure 3(d)), an increase in strain rate results in a corresponding increase in flow stress. At the lower strain rates of 0.01 s −1 and 0.1 s −1 , the flow curves exhibit a single peak, followed by a stress decrease and eventual plateau, indicative of DRX phenomenon [25]. Conversely, at a higher strain rate of 1 s −1 , the flow curves demonstrate characteristics of dynamic recovery (DRV) without an apparent peak stress.…”

Section: Hot Deformation Flow Curvesmentioning

confidence: 97%

High-temperature mechanical properties of additively manufactured 420 stainless steel

Bongao,

de Yro

et al. 2024

Mater. Res. Express

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Martensitic stainless steels are indispensable alloys in various high stress and temperature applications such as plastic injection molds and components in steam generators. Subtractive manufacturing methods used to fabricate these parts, however, limits its functionality and performance due to design constraint of cooling channels. This limitation can be resolved by means of additive manufacturing while ensuring that acceptable high-temperature properties can be achieved. In this work, the mechanical behavior of additively manufactured 420 stainless steel (AM420SS) is explored through material constitutive modeling to determine the mathematical model that best describes its flow stress in extreme conditions. This is accomplished by subjecting the samples to hot compression under the strain rates of 0.1-1.0 s-1, and temperatures between 973-1423 K (700-1150 ºC) via Gleeble thermomechanical test. The experimental data were used to generate the predictive flow stress curves of constitutive models which includes Johnson-Cook, Zerilli-Armstrong, Zener-Hollomon, and Hensel-Spittel equations. Results showed that Zener-Hollomon and Hensel-Spittel models are the most accurate material constitutive equations with relatively high R values of 0.982 and 0.976, and low average absolute relative error values of 8.13 % and 7.69 %, respectively. The material constants derived from these models can be applied in finite element analysis simulations to assess the performance of using AM420SS parts at high temperature and strain conditions.

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Section: Hot Deformation Flow Curvesmentioning

confidence: 97%

High-temperature mechanical properties of additively manufactured 420 stainless steel

Bongao,

de Yro

et al. 2024

Mater. Res. Express

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“…Magnesium alloy is a low-density structural material with a density of only 1.8 g/cm 3 . It has high specific strength, good heat dissipation, strong shock absorption, and high impact strength, as well as an excellent electromagnetic shielding performance.…”

Section: Introductionmentioning

confidence: 99%

“…It is widely employed in the manufacture of engine casings, radar shells, notebook shells, satellite brackets, wing skins for anti-aircraft missiles, and rudders. Furthermore, it has numerous applications in the fields of automotive and high-speed rail transportation [1][2][3][4]. However, the inferior chemical stability, corrosion resistance, and wear resistance of magnesium are significant limitations that must be addressed to enable its expanded use in industrial applications [5,6].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Yttrium Nitrate Content on the Microstructure and Properties of a Micro-Arc Oxidation Coating Prepared on a ZK61M Magnesium Alloy

Li,

Wang,

Geng

et al. 2023

Coatings

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To investigate the effect of the content of yttrium nitrate on the microstructure and properties of micro-arc oxidation coatings on a ZK61M magnesium alloy, this study successfully prepared a ZrO2-Y2O3-containing composite ceramic coating on a ZK61M magnesium alloy by using micro-arc oxidation (MAO) technology, adding different amounts of yttrium nitrate (0 g/L, 0.15 g/L, 0.45 g/L, and 0.75 g/L) to a zirconate electrolyte with the main components of 6 g/L of (NH4)2ZrF6, 4 g/L of NaH2PO4, 1 g/L of NaF, and a pH value of 7.5–8.0. The microstructure, phase composition, corrosion resistance, and friction coefficient of the coating were investigated using a scanning electron microscope, an energy spectrometer, an X-ray diffractometer, a photoelectron spectrometer, an electrochemical tester, and a friction and wear tester, respectively. The results showed that the composite ceramic coating was composed of c-ZrO2, t-ZrO2, m-ZrO2, MgO, Y2O3, and MgF2. Among the MAO coatings prepared in this experiment, it was when the concentration of the Y(NO3)3 was 0.75 g/L that the coating exhibited the best corrosion resistance and wear resistance. The corrosion current density (Icorr) was 1.415 × 10−8 A·cm−2, which was four orders of magnitude lower than that of the substrate. The friction coefficient and wear volume of the coating were reduced by 30.77% and 96.55% compared to the substrate, respectively.

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“…And the experimental data showed the peak stress and elongation increased as the strain rates increased [20]. Chen et al [21] carried out a series of experiments to observe the hot compression deformation behavior of extruded ZK61M magnesium alloy and establishment of constitutive equation. A comparative investigation on processing hole by conventional drilling and helical milling was made to demonstrate the advantages of helical hole milling [22].…”

Section: Introductionmentioning

confidence: 99%

Influence of milling parameters on machining performances and surface quality of ZK61M magnesium alloy

Wang,

Chen,

Huang

et al. 2023

Int J Adv Manuf Technol

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The milling parameters have an important in uence on machining performance and surface quality of metal materials. In this paper, the differences in machining and corrosion resistance properties of ZK61M plates under different processing parameters were analyzed by side milling. The milling process was simulated to explore the change laws of milling temperature and milling force. The hardness of machined surface was observed by Vikers hardness tester. The surface quality and the corrosion performances under different spindle speeds were observed by 3D ultra-depth of eld microscope. The results showed that the milling temperature was increased with the increase of spindle speed and feed speed. The in uence of spindle speed and feed speed on milling force along the milling direction and the cutter direction was signi cant different. The milled surface had better quality when the spindle speed increased or the feed speed decreased. The hardness standard deviation of machined surface was decreased as the surface quality became better. Besides, it was summarized that how spindle speed played a role in corrosion resistance performance by affecting residual stress and metal oxides.

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Hot compression deformation behavior of extruded ZK61M magnesium alloy and establishment of constitutive equation

Cited by 7 publications

References 4 publications

High-temperature mechanical properties of additively manufactured 420 stainless steel

High-temperature mechanical properties of additively manufactured 420 stainless steel

The Effect of Yttrium Nitrate Content on the Microstructure and Properties of a Micro-Arc Oxidation Coating Prepared on a ZK61M Magnesium Alloy

Influence of milling parameters on machining performances and surface quality of ZK61M magnesium alloy

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