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In this research work, resistance spot welded dissimilar joints of ferritic stainless steel and weathering steel sheets is investigated for mechanical and metallurgical properties.
Test specimens were subjected to tensile shear test and micro hardness test to assess the mechanical properties of the weld joints.
Welding current, time and electrode force are some of the important factors controlling the RSW process.
[9] M.Alizadeh-h, S.P.H.Marashi and M.Pouranvari, Resistance spot welding of AISI 430 ferritic stainless steel: Phase transformations and mechanical properties, Materials and Design,56 (2014) 258-263
[20] Y M.Alenius,P.Pohjanne,M.Somervuori and H.Hanninen,Exploring the mechanical properties of spot welded dissimilar joints for stainless and galvanized steels, Welding Journal, (2006) 305-313.

The enhancement effect is affected by various factors, interface is one of the key factors determine its enhancement effect, also is the research focus of metal matrix composites.
Briefly introduced carbon nanotubes reinforced aluminum matrix (CNTs/Al) composite material interface bonding mechanism and interface effect on the properties of composite materials, thermal expansion coefficient and preparation methods were reviewed, purity of carbon nanotubes and other factors impact on CNTs/Alcomposites interface, and puts forward the way to improve interface.
Reinforced metal matrix composite material that is commonly used in including reinforced fiber, whisker reinforcing, particle reinforced body and other enhancements [3], and the structure is stable and has good mechanical properties of carbon nanotubes (CNTs) reinforced body to cause the attention of people more and more [4, 5], carbon nanotubes as an ideal nanoscale fiber reinforced phase, in theory, can greatly improve the mechanical properties of metal matrix, but its mechanical properties in practical research is far from ideal value, this is mainly due to their high surface energy of carbon nanotubes are prone to reunion, and combined with aluminum matrix caused by poor wettability interface is not ideal.
Composite material interface is one of the important factors that affect composite comprehensive performance, so we should strengthen the interface study of cNTg/al composites, fully tap their potential to achieve good performance of the CNTs/Al composites [6].
Interface bonding strength is too low or too high effect on the properties of materials will be unfavourable.

To develop such models, the scale of control volume considering strength, stiffness and deformability is one of important factors.
Meanwhile, the mechanical properties of mortar in fire problem are strongly related to temperature that mortars were experienced to.
During the life span, the structural concrete deteriorates owing to various factors.
In previous studies [8-11], it has been discovered that the various scales material properties, such as chemical decomposition, surface cracking or mechanical properties have been diminished due to fire exposure.
This can cause the reduction in mechanical properties of mortar.

According to Wang et al. [13], factors such as waviness, agglomeration, and interphase, were found to affect the thermo-mechanical performance of Al matrix composites.
It is clear that the wavy shape of the CNT ESF affects the mechanical and thermal characteristics of the TMNCs.
Ruoff, Tensile loading of ropes of single wall carbon nanotubes and their mechanical properties, Phys.
Agarwal, An analysis of the factors affecting strengthening in carbon nanotube reinforced aluminum composites, Carbon N.
Chen, Mechanical properties of carbon nanotube-copper nanocomposites, J.

Due to the good mechanical properties and energetic properties of the HTPB propellant, it becomes the important source of power for missile and space propulsion.
So it is necessary to research the tensile mechanical properties at low temperature [1-3].
Characteristics of stress-strain curve Mechanical properties and master curve.
(1) Results show that the mechanical properties of HTPB propellant are closely related to temperature and strain rate.
Effect of Temperature on Mechanical Properties of Solid Rocket Propellants[J].

The paper deals with the influence of environmental degradation on the change of the mechanical properties of polymer nanocomposites.
The concept of ageing emphasizes the time factor, which not necessarily means the deterioration of properties. [14,15].
Mechanical properties are strength properties defined in the static tensile test and Charpy impact test.
To determine the changes of mechanical properties after ageing, tensile and impact tests were made.
Summary The aim of the contribution was to investigate the impact of nanofiller in selected mechanical properties of prepared nanocomposites.

Despite its excellent mechanical properties even at a low temperature as low as -162℃, with improper welding procedures, 9%Ni steel may still exhibit unsatisfactory postweld mechanical properties in the HAZ.
This study was conducted to seek appropriate approaches to make accurate predictions of HAZ hardness for 9%Ni steel welding, also aimed to explore determining factors of HAZ mechanical properties which might be properly regulated to obtain proper microstructure and relatively low hardness of near-weld HAZ.
However, it is apparent that there are considerable differences between the hypothetic values and the experimental values, because factors like chemical composition are not taken into account which are indeed of considerable importance to other properties.
Relative error shown in Table Ⅵ would suggest that the newly-developed formula of hardness could give a fairly good prediction of HAZ hardness for 9% Ni steel and steels with mechanical properties and microscopic structures alike in normal welding situations.
Easterling, “Predicting heat affected zone microstructures and properties in fusion welds,” Advances in Welding Science and Technology, Australian Welding Institute, 1986, pp. 99-109.

Microstructure and mechanical properties of the 55%, 60% and 67% Mo/Cu composites for electronic packaging application fabricated by a patent squeeze casting route have been investigated.
And density is the key factor that controls the thermal conductivity and mechanical properties of the materials [5, 6].
The present work focuses on microstructure and mechanical properties of the Mo/Cu composites.
It is well know that the interface and interface effect are important factors affecting properties of the composite.
The addition of hard particles can strengthen the matrix alloy and improve mechanical properties.

Mechanical properties tests The mechanical properties of WNC fabrics measured were breaking, tearing and peeling strength.
Many factors are believed to affect the peeling strength fluctuation and these factors can be divided into two main categories: the space between warp-knitted fabric and non-woven fabric and hot melt powder.
The testing results show mechanical properties of these WNC fabrics have little change after different high temperature heat treatment.
Effect of process parameters on the mechanical properties of CO--wrapped PP/flax yarn [D].
Analysis of the influence factors on peeling strength of the nonwovens used for micro-fiber synthetic leather [J].

The content of pigment from 5% to 10% has no impact on mechanical properties and permeability of RAC.
The table 2 declared that the degree orders of four factors affecting the flexural strength were: water-binder ratio>polypropylene fiber dosage>pigment dosage>slag dosage.
Table 4 showed that the degree orders of four factors affecting the compressive strength were: water-binder ratio>polypropylene fiber dosage>slag dosage>pigment dosage.
Table 6 showed that the degree orders of four factors affecting the permeable coefficient were: water-binder ratio> polypropylene fiber dosage> slag dosage >pigment dosage.
It stated that water cement ratio was the main factor affecting permeable coefficient.