microstructure and strain rate sensitivity behavior of

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Microstructure and strain rate sensitivity behavior of

Microstructure and strain rate sensitivity behavior of

3 rows · May 10, 2019 · In this study, the microstructure and the strain rate sensitivity (SRS) behavior of SM490 sp.info Microstructure and strain rate sensitivity behavior of The results showed that both yield strength and indentation hardness of WM, fine-grain HAZ, and BM exhibit the strain rate-dependent behavior, in which yield strength and indentation hardness tend to increase with increasing strain rate indentation. Strain rate sensitivity (SRS) values of WM, fine-grain HAZ, and BM were determined by using three different models:sp.info Microstructure characteristics and strain rate sensitivity May 09, 2015 · The results show that both microstructure evolution and flow behavior are sensitive to strain rate. At the lower strain rates of 0.001鈥0.1 s鈭1, dynamic recovery leads to abundant sub-grains. At the higher strain rates of 1鈥50 s鈭1, dynamic recrystallization (DRX) is activated in small extent, resulting in the localized grain refinement and a decreased strain sp.info Effects of Microstructure on the Strain Rate Sensitivity microstructure and the role it plays in dictating the strain rate sensitivity of the steel grade [3-14]. Few studies considered the microstructure and its correlation to rate sensitivity, particularly in advanced steel grades. Hwang et. al [15] studied the effects of ferrite grain size on the strain rate sensitivity in DP steels.


			
Microstructure and strain rate sensitivity behavior of

Microstructure and strain rate sensitivity behavior of

Request PDF On May 10, 2019, Nguyen Ngoc Vinh and others published Microstructure and strain rate sensitivity behavior of SM490 structural steel weld zone investigated using indentation Find sp.info Microstructure, strain-rate sensitivity, work May 22, 2019 · The properties obtained by the LAM process are compared to commercial rolled sheets of these metals. Strain-rate sensitivity, work hardening, and fracture behavior are assessed by conducting uniaxial tensile testing at different strain rates (0.001, 0.01, 0.1, and 1.0 sec 鈭1). Moreover, a correlation between the final microstructure and mechanical properties sp.info Strain rate sensitivity, microstructure variations, and Aug 01, 2020 · High energy x-ray diffraction and microstructure characterization are employed. 鈥 Strain rate sensitivity increases with amount of plasticity. 鈥 Strain rate sensitivity increases in coarser grain microstructures. 鈥 A stress-assisted 尾 鈫 伪鈥 phase transformation was observed in Ti6246. Abstractsp.info Strain rate sensitivity, microstructure variations, and May 29, 2020 · This is accompanied by calculation of the strain rate sensitivity (SRS) in these alloys, as a function of applied loading. The results of the calculated SRS and the mechanical


			
Effect of Strain Rate on the Microstructure Evolution

Effect of Strain Rate on the Microstructure Evolution

May 22, 2019 · Moreover, as strain rates increased, the rates of work hardening and work softening increased simultaneously. The microstructural observation after the compressive deformation confirmed microstructure evolution in all materials, and as the strain rate increased, the average grain size decreased, and a more uniform structure was formed.sp.info The dependence of stress and strain rate on the Sep 30, 2021 · Although a raft-like microstructure is observed at a normal strain rate (10 鈭3 s 鈭1), but the mechanism seems to be different from that caused by the creep experiment. In a common tensile strain rate of 10 鈭3 s 鈭1, the 纬鈥 cubes are clearly elongated along the tensile direction (this is easy to imagine). The raft-like microstructure is caused mainly by Poisson's sp.info Comparison in Deformation Behavior, Microstructure, and According to the experimental results, yield strength and ultimate tensile strength of the alloy increase with the increase in strain rate in room temperature. Microstructure results indicate that the size of dimples is smaller in the tensile fracture surface at low strain rate than the high strain rate, and the number of dimples is also related to the strain rates and twins appear sp.info Microstructure, strain-rate sensitivity, work hardening Microstructure, strain-rate sensitivity, work hardening, and fracture behavior of laser additive manufactured austenitic and martensitic stainless steel structures


			
Strain rate sensitivity behavior of a structural steel

Strain rate sensitivity behavior of a structural steel

The results showed that the strain rate sensitivity exhibited decrease almost linearly when the strain amplitude increased from 0.4% to 1.0%. The results of the present study were used to assess and understand the strain rate sensitivity behavior of sp.info Tensile properties, strain rate sensitivity, and Sep 01, 2019 · @article{osti_1566789, title = {Tensile properties, strain rate sensitivity, and activation volume of additively manufactured 316L stainless steels [Tensile properties of 316L stainless steels made by laser powder-bed-fusion additive manufacturing]}, author = {Li, Zan and Voisin, Thomas and McKeown, Joseph T. and Ye, Jianchao and Braun, Tom and Kamath, sp.info Work-hardening behavior, strain rate sensitivity, and Mar 23, 2016 · Abstract. An in situ CuZr-based metallic glass matrix composite containing B2-CuZr phase was prepared by arc melting and injection casting. Mechanical behaviors of the composite under uniaxial compression were investigated over a wide strain rate range (2.0 × 10 鈭4 鈥3.6 × 10 3 s 鈭1 ). The composite exhibited obvious work-hardening behavior, sp.info Strain Rate and Anisotropic Microstructure Dependent Five dynamic strain rates from 0.00625 s-1 to 12.5 s-1 are tested to show the strain rate sensitivity of the cocoon shell material. In the meantime, the anisotropy of the cocoon shell is considered and the cocoon shell specimens are cut along 0°, 45° and 90° orientation to the short axis of cocoons.


			
Twinning-Induced Abnormal Strain Rate Sensitivity and

Twinning-Induced Abnormal Strain Rate Sensitivity and

Nov 22, 2021 · The strain rate sensitivity and indentation creep behavior of a bulk nanocrystalline Mg鈥揋d鈥揧鈥揨r alloy were investigated. The main findings were as follows:Nanocrystalline Mg鈥揋d鈥揧鈥揨r alloy exhibits negative strain rate sensitivity.sp.info Strain-rate sensitivity of strength dependence on the Oct 01, 2017 · The strain-rate sensitivity of tensile strength is now assessed using a modified Kocks-Mecking formulation for hardening. The operative scale of the microstructural strengthening is designated by the coefficieint c b that can be determined from measurements of plastic strain, yield and ultimate strength.sp.info Evolution of microstructure and rheological behavior of Semisolid materials exhibit non-uniform, pressure dependent, strain rate independent, granular flow during deformation at medium liquid contents and in the range of strain rates examined. Finally, a simple criterion for processability in the semisolid state is introduced, based on the sensitivity of the liquid content to temperature fluctuations.sp.info Microstructure and mechanical properties of tantalum Microstructure and mechanical properties of tantalum after equal channel angular extrusion (ECAE) technically to investigate the evolution in microstructure and mechanical behavior during ECAE of refractory metals with relatively high melting temperatures. These hundred nanometers also leads to a decrease in strain rate sensitivity [20


			
Metals Free Full-Text Superplastic Forming and

Metals Free Full-Text Superplastic Forming and

Jan 14, 2022 · The strain rate sensitivity exponent m can be determined from the logarithm of tensile stress versus logarithmic strain rates, as shown in Figure 3b. The value of m is calculated to be 0.51, K is estimated to be 1038.03 MPa·s on account of the flow stress curves at 400 °C with different strain rates.sp.info Effects of Microstructure on the Strain Rate Sensitivity The dependence of the strain rate sensitivity of advanced ~1 GPa tensile strength steels on the phases present in their microstructures was studied by sp.info Freeze casting of porous hydroxyapatite scaffolds. II The mechanical response showed high strain tolerance (5-10% at the maximum stress), high strain to failure (>20%), and high strain rate sensitivity. Manipulation of the freeze-cast microstructure, achieved by additions of glycerol and 1,4-dioxane to the aqueous suspensions, produced changes in the magnitude of the mechanical response, but little change in the sp.info (PDF) Synthesis of nanodiamond reinforced silver matrix Therefore, a homogeneous distribution of the NDs in the testing region and a steady state of the microstructure of the Ag matrix is guaranteed. This is further confirmed by the constant microhardness at a strain larger than 150 as shown in Fig.1b and the microstructural evolution visible in the SEM micrographs in Fig. 4.


			
Microstructure and Work Hardening Behavior of Micro

Microstructure and Work Hardening Behavior of Micro

May 01, 2019 · The strain hardening behavior varied with local microstructure, which indicates non-uniform deformation and dislocation along the welded specimen. The work hardening behavior influences ductility and strength in the plastic deformation zone. Strain Rate Sensitivity, Strain Hardening, and Yield Behavior of 304L Stainless Steel, J. Eng. Mater sp.info Hot Deformation Behavior of PM Ni with Harmonic Jan 04, 2022 · A strain value 蔚 of 0.05 was chosen for the measurement of m, since at this deformation all the stress鈥搒train curves are in the initial work-hardening step before reaching the peak flow stress. Values of strain rate sensitivity m, calculated as shown in Figure 8, are summarized in Table 2 and plotted in Figure 9 as a function of temperature sp.info Strain Rate and Anisotropic Microstructure Dependent Mar 03, 2016 · A is the yield stress of cocoon materials at a strain rate of 0.005 s-1, B and n reflect the nonlinearity of stress-strain behaviors of the cocoon materials after yield, which can be obtained by curve fitting at a strain rate of 0.005 s-1, while C is a parameter showing strain rate sensitivity of cocoon materials, determined by plotting sp.info (PDF) Strain Rate Effects on the Mechanical Properties of The AlCoCrFeNi HEA exhibited high strain rate sensitivity, especially under dynamic compression. the mechanical behavior and microstructure evolution of CoCrFeMnNi alloy (Cantor alloy) under

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