Search results

The average grain size of the base metal, HAZ and weld nugget was estimated to be 85 μm, 76 μm and 47 μm respectively.
By fitting power law, between stiffness (S) and number of cycles (N) and hysteresis energy (H) and number of cycles (N), it is possible to assess the quality of the material being tested.
The exponent in the power law indicates the rate at which the mechanical property degrades with the number of cycles.
Material Power law R2 Base Metal S=52.661 N-0.017 0.874 HAZ S=56.062 N-0.021 0.905 Weld zone S=59.262 N-0.023 0.960 Fig. 6: a) Variation of stiffness (S) with number of cycles, b) Hysteresis energy (H) – number of cycles curve.
The displacement variation of the indenter may also be characterized in a similar way with the number of cycles to failure.

The structural analysis shows that the average crystallite size decreases while lattice grain size increases with the increasing milling time.
Xin et.al [16] mentioned that high lattice strain in HEA-based catalyst is able to promote the formation of defects such as oxygen vacancies and can create more numbers of active sites for the adsorption to occur.

It is evident that Taguchi approach has decreased the number of experiments without negative effects on the result.
Joining ferritic low carbon steel is faced with the problem of coarse grains in the weld zone and heat affected zone of fusion welds and consequent low toughness and ductility due to the absence of phase transformation [2].

The time step was adjusted to maintain a maximum Courant number of less than 1.
The dimensionless Froude number (Fr) and Archimedes number (Ar) were usually used to predict the fluidization behavior of a given fluid-particle system [4,15].
Benyahia, Coarse-Grained-Particle Method for Simulation of Liquid–Solids Reacting Flows, Ind.
Moncada, Particle Densimetric Froude Number for Estimating Sediment Transport, J.
Goossens, Classification of fluidized particles by Archimedes number, Powder Technol. 98 (1998) 48-53

It was observed that the film having lower phosphorous concentration adheres well at the surface while the higher phosphorous concentration film has fallen off at number of places and the substrate has been exposed.
In the Ni-P alloy compositions [Table 2], the alloys containing low P content are characterized by crystalline and microcrystalline nickel which indicates that the number of phosphorous atoms are not sufficient to distort the nickel lattice to an extent where amorphous nickel can be obtained, rarely observed regions of amorphous nickel even in 10.8 at.
Apart from Ni, a number of non-equilibrium phases with a general chemical formula NixPy are also there in as deposited films and the Ni content in it increases with increase in P content of the film.
Also, the crystalline nature is less prominent in Ni-P-X satisfies the result of SEM analysis and the grain size reduction by the presence of broaden peak.
The enhancement in grain size within the particles of annealed EL (Ni-P)/RAM powder is due to simultaneous growth of EL Ni-P and RAM powders [28].

Table 2 also shows the number of experimental runs, and the weights of GCHA, RHA, and cement used for each run at a constant water-binder ratio of 0.5.
These tests were conducted at the ROLAB research and diagnostic laboratory in Oyo State, adhering to ASTM E1621 [36] and ASTM E1382 [37] standards. 2.2.2.2 Mechanical Properties of Concrete Containing GHCA and RHA The compressive strength test which conformed with the stipulations in BS EN 12390-3:2019 [38] was conducted using a STYE-2000 Analogue type compression testing machine with serial number 131010 supplied by Okhard Machine Tools, Lagos, Nigeria.
The grant’s reference number is KWASUIBR/CRIT/270921/VOL1/TETF2020/0015.
[35] ASTM D7928, “ASTM D7928-17 Standard Test Method for Particle-Size Distribution (Gradation) of Fine-Grained Soils Using the Sedimentation (Hydrometer) Analysis,” (2017)
[37] ASTM E1382-97, “Standard Test Methods for Determining Average Grain Size Using Semiautomatic and Automatic Image Analysis,” (2015)

To remove casting porosity and obtain smaller crystal grains, many large forgings need ingots to be upset axially with large ratio of height to diameter (H/D) greater than 3.
The is the effective plastic strain at nodes, and the n is the node number.

For an ideal alloy with the vacancy mechanism operating, Ni can be calculated as the product zNCiCVwit, with z being coordination number, N is number of lattice sites, CV is vacancy composition and wi is an exchange frequency of an atom i and a vacancy.
It is assumed that maximum length is xmax=40, where x-∞=-20 and x+∞=-20 i.e. x varies from -20 to +20 and the number of grid spacings in the x direction is n=200.
Hence, the constant mesh size along the x-axis is equal to the dimensionless number ∆x=0.2 (-20≤x≤+20) with a smaller time step ∆t=0.0001.
The work presented in this study is based on non-dimensioned numbers.
Divinski, Radioactive isotopes reveal a non sluggish kinetics of grain boundary diffusion in high entropy alloys, Scientific reports, vol. 7, no. 1, p. 12293, 2017

The serial numbers of soil press cells used to measure the pile and soil press were F04, F06 and F07.
Soil press cells with the serial number of F01 to F03 from bottom to top were used to examine the soil press among the piles.
Strain gauges were used to examine the pile axis force and the interaction of pile side and soil, which serial numbers were J01 to J04 from bottom to top.
Centrifugal Model Test Progress First, foundation soil was filled by layers (every layer thickness equal to 40mm and it should be close-grained), and at the same time the mini soil press cells and piezometers were also located by predesigned.
In the following analysis the data of number J02, J03, J04 strain gauges were used, and that of the number J01 was only used as a reference.

Field test data on influence of MgCl2 content on sodium removal Test data collected under carefully monitored and controlled conditions at a number of casthouses is presented as follows: Tables 1&2 show the comparisons made between a 40%MgCl2 and a 60-65% MgCl2 containing product applied manually in two identical 50 tonne furnaces at a smelter casting 5xxx alloy.
Figure 3: Effect of increasing MgCl2 content from 60% to 75%, Robichaud, [5] So, the evidence from practical evaluations from a number of different sources is clearly that alkali removal efficiency is not influenced by the % of MgCl2 in the fused salt contrary to the widely held view at the time.
This trend is due to the increase in global demand for potash fertilizer for the production of grain crops and biofuels.