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Introduction Self-propagating high-temperature synthesis (SHS), or the so-called combustion synthesis (also known as "solid flame"), is a versatile and energy-efficient method for producing a wide range of refractory compounds (carbides, nitrides, borides, intermetallics etc.) and composite materials that possess fine-grained structure and superior properties [1].
The reasons for these effects cannot be reduced only to an increase in the contact surface area and a decrease in the size of particles/layers of reactants, i.e. the characteristic diffusion length, due to comminution and cold welding during MA [8] (these factors can lead only to a buildup of the conversion degree).
The synergetic effect of the aforesaid factors may also be responsible for the difference in the position of a maximum in curves TSHS(tMA) and uSHS(tMA), which was revealed experimentally during MA-SHS in the Ni-Ti and Ni-Al systems [7].
Dieter: Mechanical Metallurgy (McGraw-Hill, New York 1986) [11] L.V.
Rafalovski: Structure and Properties of Metals and Alloys: A Handbook (Naukova Dumka, Kiev 1986) (in Russian) [12] Smithells Metals Reference Book, 7th edition (Butterworth-Heinemann, Oxford 1992) [13] F.R.N.

Properties of concrete.
[9] WK Part, M Ramli, CB Cheah, An overview on the influence of various factors on the properties of geopolymer concrete derived from industrial by-products, Constr.
"Mechanical properties of three high-strength concretes containing silica fume." 
"Factors influencing the compressive strength of fly ash-based geopolymer concrete." 
"The effects of fibre on the mechanical properties of aerated concrete."

The calculation methods are prospective since they allow one to extend the understanding of hot crack formation and the impact of technological factors in the manufacture of casting.
Theoretical part The effect of heat transfer during cooling and solidification of the casting results in a change in the mechanical properties of the sand layer [7, 8] that impedes the shrinkage of the casting.
Lisovskaya, The Use of Thermal Analysis to Study the Structure and Properties of Roll Steels, Metal Science and Heat Treatment. 56 (2014) 302-305
Mironov, Influence of the Chemical Composition on the Structure Formation and Properties of Temperature- and Wear-Resistant Cast Iron, Steel in Translation. 37 (2007) 229-233
Kolokoltsev, Effect of Chemical Composition and Cooling Conditions on Alloyed White Iron Microstructure and Properties, Metallurgist. 58 (2014) 294-298

Many stress corrosion crack accidents of ammonia storage tanks have been reported all over the world for recent years. 16MnR low alloy steel with good composite mechanical properties is the most common used pressure vessel steel in China, it has better anticorrosion properties than the low alloy high strength steel, especially in anhydrous ammonia environments.
Three factors are necessary to induce the stress corrosion: sensitive materials, special operating environments and definite stress, they take effects together and affect to each other.
The other is heat treatment factors, if the welds are not heat treated or treat improperly, there will be high residual stress remained in the structures, and it will promote stress corrosion crack. 16MnR low alloy steel with good composite mechanical properties, its strength is lower than that of high-strength steel, but its welding property and plasticity are better, and it is not susceptive to crack, so it is widely used to manufacture pressure vessels.
Chemical composition and mechanical property of the material are given in Table 1 and Table 2.
Table 4 Crack length and stress intensity factors of the specimen No.

In this paper the effects of process parameters and tool profile on the mechanical properties of friction stir welded butt joints of dissimilar aluminum alloy sheets AA6082 and AA2014 were carried out.
Tool design is an important factor which influences the properties of the joints.
Leitao et al. (2009) investigated the mechanical properties of aluminium alloy friction stir welds with similiar and dissimiliar materials.
Aval et al. (2011) investigated the mechanical and metallurgical properties in similar and dissimilar friction stir welding of aluminium.
[8] Aval HJ, Serajzadeh S, Kokabi AH, “Evolution of microstructures and mechanical properties in similar and dissimilar friction stir welding of AA5086 and AA6061”.

Influencing factors of 1Cr13 SSCC for oil & gas wellhead Pei Junfeng 1,2 Zhang Guixin1 Yin Shunshi 3 Deng Xuefeng3 (1 College of Mechanical and Energy Engineering, Jiangsu Polytechnic University, Changzhou 213016, P.R.
With the applications of 1Cr13 steel in oil & gas wellhead, it is urgent to research hydrogen sulfide stress corrosion cracking (SSCC) properties in high-strength under the simulation condition of production.
Constant load tensile test was carried out in the laboratory in order to better understand the properties of materials to reduce stress corrosion cracking accidents and choose the better material to prevent the occurrence of hydrogen sulfide stress corrosion.
Environmental factors which impact the hydrogen sulfide stress corrosion test.
In the hydrogen sulfide stress corrosion tests, stress corrosion affected by a variety of environmental factors, such as hydrogen sulfide, temperature, pH, chlorine ion concentration and so on [6~9] ，in which hydrogen sulfide has played a very crucial role in hydrogen sulfide stress corrosion test.

It is known from the experimental and analytical results that different chemical environments such as chemical composition, pH value etc can affect the mechanical property of rock differently.
Introduction Research on rock mechanical property under chemical corrosion is one of the most basic subjects in nucleus wastes treatment, geothermy development, petroleum drilling, earthquake mechanism, storage of toxic harmful materials and estimation of long term stability of rock and soil engineering.
Research results have indicated that chemical solutions are important factors in terms of effects on the deformation and strength of rock [1-5].
Analysis of Mechanical Properties of Limestone Eroded by Chemical Solutions The effect of chemical corrosion on the mechanical property of limestone can be analyzed from four stages of the stress-strain curves (Figure 1)
[8] Y.S.Touloukian, W.R.Judd, R.F.Roy.Physical properties of rocks and minerals.

By studying and analyzing the splitting process theory, affecting factors on splitting quality and the expansion force ratio, finite element analysis was conducted by using modern engineering software.
Fig. 3 Connecting rod blank with cracking notch In addition to the applied load size and speed, friction coefficients of the relative movement surfaces and the wedge angle are also important factors for splitting quality.
Affecting Factors on Fracture Splitting Quality.
Affecting factors including connecting rod material, the shape and thickness of cracking notch and fracture cross section, and splitting device and parameters.
Fracture splitting process requires the material to have good mechanical properties to meet the requirement of connecting rod, meanwhile, the toughness index of the material should be limited to avoid large plastic deformation, conducive the realization of brittle fracture and ensure the quality of fracture cross section.

Studies had shown that the comfort of clothing was determined by many factors, such as material, garment structure and wearing state[1].
Experimental The trial was divided into two parts: test of elastic properties and extension properties of knitted fabric, and objective clothing pressure measurement. 1.
The mechanical extension properties of fabrics were measured using a strength tester (YG026B).
The relation between clothing pressure and mechanical properties of fabrics In the Fig 4, the coordinate 1 to 8 on the X-axi means elastic recovery rate on warp direction 80%, 83%, 86%, 89%, 92%, 95%, 98% and 100%.
As all factors, such as environment and clothing construction, were controlled, the variable which was changed was the fiber content of the knitted fiber content.

A forward open cold extrusion process is evaluated to reveal the sensitivity of forming load to numerical factors including number of total degrees of freedom, time step size and mesh size.
The mesh system also strongly affects the finite element solution.
Limit initial radii were obtained for all combinations of the numerical conditions to check the effect of numerical factors on the predictions and are shown in Figure 6.
Effect of Numerical Factors on the Forming Load.
Oyawale, Extrusion die geometry effects on the energy absorbing properties and deformation response of 6063-type Al-Mg-Si aluminum alloy Results, Phys. 3 (2013) 1-6