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The main factors affecting the quality of the castings obtained are indicated.
In the case of an increase in the solidification rate, the mechanical properties of the castings are improved due to a finer structure and higher density.
Casting magnesium alloys in chill mold in comparison with casting in single sand molds provides castings with better mechanical properties, as well as with a cleaner outer surface [5].
Heat treatment provides an increase in mechanical properties and a reduction in the level of internal stresses.
Hamid, Mechanical properties and machinability of magnesium alloy AZ31 and AZ91 – A comparative review, IOP Conf.

Tensile Properties.
Table 3 Tensile properties of the bulk nanocrystalline Al 7050 and the traditional counterpart at ambient temperature Sample Ultimate tensile strength [MPa] Elongation [%] Contraction of area [%] Traditionally wrought Al 7050-T6 480-590 5-10 - Bulk nanocrystalline Al 7050 1# 417 5.1 9.8 2# 390 4.3 10.4 3# 429 6.1 11.6 Average value 412 5.2 10.6 Fig. 4 The stress-strain curve for the tensile specimen of the bulk nanocrystalline Al 7050 Fig. 5 SEM images of the tensile fracture surface of the bulk nanocrystalline Al 7050 (a) low magnification; (b) magnified SEM image The Factors Affecting the Mechanical Properties.
In an effort to interpret the mechanical properties especially the low value for the strength of the bulk nanocrystalline Al 7050, it is necessary to investigate the strengthening mechanisms and other factors affecting the mechanical properties.
The strength of the interface also determines the failure modes and mechanical properties of the material [19].
Mechanical properties of an ultrafine-grained Al-7.5 pct Mg alloy.

In the current paper, the mechanical properties and spifability (i.e.
The mechanical properties were mainly determined through tensile testing and the spifability was evaluated using Varying Wall Angle Conical Frustum (VWACF) test.
The mechanical properties of these materials were determined by performing standard tensile tests.
In order to identify the most influential property affecting the degree of formability improvement, the correlation of each property, listed in Table 1, with FLDo(inc) - FLDo(con) was examined.
Though 3 material properties form relationships with formability improvement, true thickness strain at tensile fracture being highest in R2 (multiple correlation factor) value is a better choice.

Meanwhile the influences of solidification agent content and curing age on the mechanical properties of solidification agent stabilized iron tailing gravel were investigated.
The results show that solidification agent stabilized iron tailing gravel has better mechanical properties.
The mechanical properties of solidification agent stabilized iron tailing gravel conform to the current specification, so it can be used as highway sub-base material.
The influences of cement and solidification agent on the maximum dry density, optimum moisture content and 7d unconfined compressive strength were investigated according to the results, some of which meet the required strength were prepared for further study on mechanical properties.
(3) It can be seen from table 3 that there are 6 proportions meet the design strength requirements[6]（Rc,7d,0.95＞Rd=2.5MPa）,the following 4 proportions are prepared for further study on mechanical properties under the specific technical and economic requirements and other factors.

Orthogonal test factor level table L9(33) Level Chemical compositions of the main factors (wt%) A(Al-10Sr) B(RE) C(Al-5Ti-B) 1 0.1 0.1 0.6 2 0.2 0.2 0.8 3 0.3 0.3 1.0 Table 4.
In theory, when the adding beyond the minimum value, mechanical properties of the alloy will be getting better and better.
The stability of the mechanical properties of master alloy was further improved.
Using the weighted evaluation value yg* to evaluate the mechanical properties of the master alloy.
It was showed that Al-5Ti-B had the greatest influence on the mechanical properties, followed was Al-10Sr and then was RE.

The physical and mechanical properties of the Yellow River alluvial silt The composition characteristics of the Yellow River alluvial soil.
In order to study the physical and mechanical properties of the Yellow River alluvial silt, we must confirm soil particle composition characteristics firstly.
The soil properties of the Yellow River alluvial silt.
But the difference of mechanical properties is small.
There are many factors affecting the soil compaction.

Welding is an important method in the production of steel structures and properties welded joints are the key factors affecting the overall performance of steel structure [2].
It is important to improve the performance of welded joints by studing the HAZ of high strength quenched and tempered carbon steel welding, as well as the relationship between microstructure and mechanical properties of weld joint.
Using optical microscope observation of microstructure in heat-affected zone of using electron backscatter diffraction analysis of its grain size, high angle grain boundaries, as well as small-angle grain boundary effects on the properties of welded structures.
Study on Microstructure and Properties of Welded Joints of 600 MPa Grade Ti-microalloyed High Strength Steel.
Microstructure and mecharical properties of HAZ of 980 MPa high strength steel joints.

With orthogonal model design test program to the main factors, and through polarization curves experiments obtain the corresponding corrosion potential, corrosion rate, pitting potential. we have done research on the impact that the change of concentration of Cl- and Na+, the temperature, pH on 304 stainless steel properties.
In the actual production, in order to control the corrosion of equipment, need to know the equipment corrosion rate and the possibility of corrosion, as well as equipment protection properties.
Orthogonal experiment Arrangements of Corrosive Factors.
The experimental design of four major corrosive factors was preceded.
Three levels of all factors are shown in Table 2.

But because the vitrified microsphere we use of which much exists on the defects of high dry density and bad insulation effect, it analyzed deeply kinds of factors which influence on the physical and mechanical properties of vitrified microsphere insulation mortar, making use of orthogonal experiment to optimize the composition materials of insulation mortar.
The orthogonal test results show that the most influential raw materials factors to mortar insulation properties and 28d compressive strength followed by aggregate, polypropylene fiber, fly ash and latex powder.
On this basis, for single-factor test, through analysis of single-factor test, has the basic components of a variety of content on the main properties of glass bead insulating mortar effects of trends.
Table 1 Factors and level table factors level A B C D heat preservation aggregate polypropylene fiber latex powder fly ash 1 1.2m 0.2%m 1%m 30%m 2 1.5m 0.3%m 2%m 40%m 3 1.8m 0.4%m 3%m 50%m Table 2 L9(34) orthogonal test programs and major test results factors No.
Therefore workability and mechanical properties of mortar in meeting conditions, should be appropriately increased aggregate amount and water cement ratio.

Depending on the microstructures, obvious differences in the mechanical properties of this alloy were obtained.
In these studies, different microstructures were established by varying several factors [3~5].
It can be concluded that the α laths have a great influence on the mechanical properties, especially on the yield stress.
Superfluous α phase has an adverse effect on mechanical properties.
Summary A study relating mechanical properties of Ti-10V-2Fe-3Al alloy to microstructures was carried out.