magnesium alloy yield function

The next generation material for lightweight railway car …

28/4/2016· The averaged mechanical properties are listed in Table 2, which is consistent with the previously reported literature. 18,19 Reviewing the test results, the magnesium alloy had no significant directional properties but showed asymmetric yield in tension and

Effects of laser beam welding parameters on mechanical properties and microstructure of AZ31B magnesium alloy

magnesium alloy (mass fraction, %) Al Mn Zn Mg 3.0 0.20 1.0 Bal. Table 2 Mechanical properties of base metal AZ31B magnesium alloy Yield strength/MPa Ultimate tensile strength/MPa Elongation in gauge length of 50 mm/% 171 215 14.7 Reduction in cross

Constitutive Characterization of Anisotropic Materials | …

Yield surfaces and constitutive response of a rare-earth magnesium alloy sheet at different temperatures: Alternatively, the use of models that employ a non-associative flow rule has been on the rise in recent years since decoupling yield function and plastic potential greatly simplifies the calibration procedure and can improve accuracy over associative models.

Precipitation strengthening in an ultralight magnesium …

1/3/2019· Magnesium (Mg) alloys are the lightest structural metallic materials (ρ ~1.4–1.9 g cm −3) and, as such, offer significant potential use in many technological, industrial and consumer

A Yield Function for Anisotropic Sheet Material …

This yield function considers the evolution of anisotropy in terms of both r values and stresses. In order to demonstrate the applicability of the proposed yield function, hole expanding tests with mild steel and 6000 series aluminum alloy sheets were simulated.

81.Effects of Strain Rate, Temperature and Sheet …

The yield loci of magnesium alloy (AZ31) sheets with different sheet thickness (0.5 and 0.8 mm) were obtained by performing biaxial tensile tests, using cruciform specimens, at temperatures of 100, 150, 200, 250 and 300 at strain rates of 10-2, 10-3 and 10-4 s-1.

Magnesium Awards of Excellence & Environmental …

China’s domestic major-brand manufacturer has developed self-owned brand, using for the children’s magnesium alloy bicycle, magnesium alloy balanced bicycle for children. The die casting of magnesium alloy for children’s bicycle is mainly used on the frame, the wheel circle, the front fork, and other parts of the bicycle resulting in 70% of the major structures in the bicycle being made

Magnesium (Mg) – Scandium (Sc) Master Alloy - SAM

Appliions of Magnesium – Scandium Master Alloy Rare earth (RE) elements have also been successfully alloyed with Mg. The addition of rare-earth (RE) elements can refine grains and weaken anisotropy to improve the ductility of the Mg alloys.

CYCLIC FATIGUE RESISTANCE OF AZ91 MAGNESIUM ALLOY

The AZ91 magnesium alloy is the most popular commercially available magnesium alloy. This alloy shows perfect castability and good mechanical properties coined with good corrosion resistance for the high purity version of the alloys [5].

MAGNESIUM ALLOY - Chen, Ga-lane

5/10/2006· 13. The magnesium alloy as claimed in claim 11, wherein the reminder further comprises strontium in an amount by mass of 0.3 to 1.5 percent. 14. The magnesium alloy as claimed in claim 11, wherein the sizes of nanoparticles are in the range 15.

2017 Awards of Excellence & Environmental …

A novel magnesium alloy of Mg-Zn-Sn-Mn was developed and the yield strength (YS) and ultimate strength (UTS) for as-extruded Mg-6Zn-3Sn-0.5Mn (wt.%) alloy could reach 383 MPa and 412 MPa, respectively. The yield strength (YS) and ultimate strength

NUMERICAL ANALYSIS OF AZ61 MAGNESIUM ALLOY …

Key words: AZ61 magnesium alloy, modified ECAE method, FEM INTRODUCTION Constantly growing demand for products made from values of yield stress function are as follows: A 0 = 88899,384, m 1 = 0,002638, m 2 = 0,505723, m 3 = -0,072545, m 4

MAGNESIUM

magnesium will burst into flame if struck by sunshine. Fortunately, modern magnesium alloy technology has overcome corrosion problems, and expanding knowledge among engineers has disproved the flamma-bility myth. In fact, magnesium must melt before it

Crystals | Free Full-Text | Effect of ECAP on the …

A fine-grained Mg-2Y-0.6Nd-0.6Zr alloy was processed by bar-rolling and equal-channel angular pressing (ECAP). The effect of ECAP on the microstructure and mechanical properties of rolled Mg-2Y-0.6Nd-0.6Zr alloy was investigated by optical microscopy, scanning electron microscopy, electron backstered diffraction and a room temperature tensile test. The results show that the Mg-2Y-0.6Nd …

MAGNESIUM-BASED ALLOY - Papirov, Igor Isakovich

24/6/2010· The magnesium alloy preferably contains lithium in a portion of 0.01 to 7 mass %, aluminum in a portion of 0.01 to 16 mass %, optionally yttrium in a portion of 0.01 to 7 mass % and rare earth metals in a portion of 0.01 to 8 mass %. US Pat. No. 2004/0 098 108

Tensile-compressive yield asymmetries in high strength …

@article{osti_7108756, title = {Tensile-compressive yield asymmetries in high strength wrought magnesium alloys}, author = {Ball, E A and Prangnell, P B}, abstractNote = {Owing to magnesium''s very low density (of 1.7 g/cm[sup 3]) there is potential for producing Mg alloys with higher specific strengths than those of existing aluminium alloys for appliions where weight savings are at a premium.

Constitutive modelling of magnesium alloy sheets under …

In this study, a continuum-based approach for the description of the plastic hardening behavior of magnesium alloy sheets subjected to non-proportional strain path changes is discussed. The constitutive model is based on an anisotropic distortional yield function coining a stable component and a fluctuating component. The stable component initiates the yield criterion that characterizes the

Constitutive and Fracture Characterization of an Anisotropic and Asymmetric Alloy …

Figure 4.9 – (a) Yield function and plastic potential and (b) uniaxial yield stress ratios and r-values at a plastic work level of 22.46 MJ/m3. Syols show the experimental results.. 39 Figure 4.10 – (a) Yield function and (b) uniaxial yield

Mg Showcase

magnesium alloy balanced bicycle for children. The die casting of magnesium alloy for children’s bicycle is mainly used on the frame, the wheel circle, the front fork, and other parts of the bicycle resulting in 70% of the major structures in the bicycle being

SAE AMS4426 - Castings, Sand, Magnesium Alloy 5.1Y - …

scope: Form This specifiion covers a magnesium alloy in the form of sand castings. Appliion These castings have been used typically for parts requiring high yield strength up to 570 F (299 C) and excellent corrosion resistance, but usage is not limited to such appliions.

Magnesium, Magnesium Alloys, & Magnesium …

C 200 h 0.45 — 2.70 0.08 500 h 0.74 — 6.35 0.10 Alloy AS41 AS21 AZ91D A380 MAGNESIUM-BASED BULK METALLIC GLASSES 79 110 MEZ alloy AE42 alloy Yield strength (MPa) 100 90 80 70 22 125 150 175 Temperature ( C) (a) 18 16 14 Elongation (%) 12 10

Understanding Mechanical and Fatigue Behavior of a Wrought Magnesium Alloy …

a Wrought Magnesium Alloy using In-situ Neutron and Synchrotron X-ray Diffraction Wei Wu University of Tennessee - Knoxville, [email protected] This Dissertation is brought to you for free and open access by the Graduate School at Trace: Tennessee Research

SAE AMS4418 - Magnesium Alloy, Sand Castings 2.5Ag - …

This specifiion covers a magnesium alloy in the form of sand castings. Appliion These castings have been used typically for parts requiring high yield strength up to 400 F (204 C), but usage is not limited to such appliions.

Mechanical responses, texture evolution, and yield loci of …

Mechanical responses and texture evolution of extruded AZ31 Mg are measured under uniaxial (tension-compression) and multiaxial (free-end torsion) loadings. Compression loading is carried out in three different directions at temperature and strain rate ranges of 77-423 K and 10-4 -3000 s -1, respectively. Texture evolution at different intermediate strains reveals that crystal reorientation is

Enhancement of strain-rate sensitivity and shear yield …

A Mg-Zn-Zr alloy was processed by high-pressure torsion for up to 2 turns at room temperature to produce significant grain refinement together with enhanced plasticity and strength. Measurements were performed to determine the strain-rate sensitivity, shear yield strength and activation volume as a function of the processing conditions.

PHYSICAL MODELLING OF PLASTIC DEFORMATION CONDITIONS …

magnesium alloy rods obtaining are plasticity charac-teristics, which represent the yield stress as a function of the deformation limit determined by plastometric testing, such as torsion or compression test under differ-ent temperature - velocity conditions.

Magnesium alloy - BIOTRONIK VI Patent AG

7/7/2015· A magnesium alloy having Y, Zn, Ca, Mn, Ag, Ce, Zr, or Si. The alloy is distinguished in that, in the event of suitable treatment, the alloy is convertible into a very fine-grained microstructure, in particular, having grain sizes less than 20 μm. The alloy components are