Search results

Effects of minor silver addition on microstructure, mechanical properties and corrosion resistances of Al-8Zn-1.Cu-1.3Mg-0.1Zr alloys were investigated using optical microscope (OM), scanning electron microscopy (SEM), mechanical properties and corrosion testing.
It was well known that the mechanical properties of 7000 series Al alloys can be improved by properly controlling the size and volume fraction of η' phases.
On the other hand, the both positive and negative effects of silver addition on mechanical properties of 7000 Al alloys were also reported by Kusui [8].
However, the mechanical properties of the based alloy become terrible when the silver content approach to 0.2 wt.%.
A3) The four main influencing factor of tensile properties is the degree of recrystallization, the effect of solid solution phase, the grain size of the recrystallization region and the volume fraction of strengthening phase which exist in matrix.

The effect of heat treatment of gray and nodular cast iron with ferrite matrix on mechanical properties and corrosion rate compared with medium carbon steel Mohamed A.
Introduction One reason for the versatility of metallic materials lies in the wide range of mechanical properties they possess, which are accessible to management by various means.
Steel with low carbon content has the same properties as iron, soft but easily formed.
· Medium carbon steel exposed to corrosion under many factors specially due to multiphase at room temperature more than after heat treatment and quenching even with stressed martensite structure which produced after quenching
· Improvement of mechanical properties of both gray and nodular cast iron with ferrite matrix couldn’t be achieved with heating at austenite area for one hour then quenching but have to give more time to allow some decomposition of graphite

The objective of this study is to discuss the discharge parameters affecting the crack arrest effects.
The appropriate discharge parameters improve the comprehensive mechanical properties.
Figure 5 Mechanical properties versus electric energy input for Inconel 625 Alloy Figure 5 demonstrates the relationship between the electric energy input and mechanical properties.
The coupling of these effects improves the comprehensive mechanical properties
The mechanical properties are not in direct proportion with the electric energy input

An important factor affecting the cooling rate is the size and shape of the casting [14].
Poreba, Microstructure and mechanical properties of high temperature creep resisting superalloy René 77 modified CoAl2O4, Archives of Mat.
Sieniawski, Surface modification, microstructure and mechanical properties of investment cast superalloys, J.
Sarma, Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy Inconel 718, Mat.
Tyrała, Effect of cooling rate on microstructure and mechanical properties of thin-walled ductile iron castings, J.

Concentration of carrier agent The concentration of the carrier agent also affected the powder properties.
The physicochemical properties of spray-dried watermelon powders [J].
Powder properties [J].
Factors influencing flow patterns, temperature fields and consequent drying rates in spray drying [J].
Prediction of final product properties after co-current spray drying [J].

The hardness and toughness met the need of the comprehensive mechanical property and proper toughness of 45CrMnSi.
An average of three observations within the variation of ±5% were considered for calculating mechanical property data.
Hardness is the most important factor affecting wear resistance.
The range analysis was used to investigate the effects of the factors, whose results are illustrated in Table 3.
Fig.2 Level effects of each factor on hardness Relative wear resistance is the most important property of wear material.

Effect of B4C on the Mechanical Properties and Microstructure of ZrB2-SiC Based Ceramics Liu Xuana, Xu Qiang b, Zhu Shizhenc Department of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China a lxbeing@126.com, b xuq@bit.edu.cn, c zhushizhen@bit.edu.cn Key words: B4C; ZrB2-SiC; mechanical properties; microstructure; high temperature strength Abstract: ZrB2-SiC-B4C is sintered at 1700°C by spark plasma sintering process.
The effect of B4C content on the mechanical properties and microstructure of ZrB2-SiC based ceramics is studied.
In this paper the SPS method is used to produce dense ZrB2-SiC-B4C composites and their mechanical properties and high temperature strength are investigated.
Results and Discussion Relative density and mechanical property.
The mechanical properties of ZrB2-SiC-B4C are summarized in Table 1.

The preliminary analysis has shown that the most important parameters of the FCVAD process affecting the properties of the coating being formed and used during the tests are: ITi  titanium cathode arc current; pN  nitrogen pressure in the vacuum chamber, Us – substrate (tool) voltage in the process of condensation of coating.
The study has used a function, which expresses the relationship of wear rate J and the factors most strongly affecting it: J=CJ∙ITia1∙pNa2∙Usa3∙expb1∙ITi∙b2∙pN∙b3∙Us (1) where J = h3/L is wear rate of the flank face of a carbide insert; L= v·TM is length of cutting path; ТM is cutting time.
The varied factors most strongly affecting the composition, structure, and properties of coatings (a layer of multi-layer composite coating) were as follows: arc current at evaporation of titanium ITi, pressure of reaction gas (nitrogen) pN, voltage on the tool (substrate) during the process of coating deposition Us.
The following ranges of variation of factors of the synthesis process were selected: ITi – 40-140 А; pN - 5·10-2 - 5·10-1 Pa; Us= 20-200 V.
Given the selected model, each of the selected factors was varied over three levels.

Thermite welding, which is a heat treatment technique, can cause changes in mechanical properties including strength, hardness, ductility and toughness [5]–[7].
Configuration of the properties of the UIC 54 railroad track is done via ANSYS 2021 R2 software.
The mechanical properties of the UIC 54 railroad are shown in Table 2.
The material used is a material whose properties have been configured as shown in Table 2.
The decreasing number of cycles value indicates that the size of the defect in the specimen has a greater length and/or width, thus affecting the age of the specimen.

In this research the effect of artificial aging/precipitation hardening on mechanical properties and microstructures of 6061 aluminum alloy weldments produced using gas tungsten welding (TIG) was studied.
Michal et al. [5] casted and extruded AA6060 aluminum alloy and studied the effect of pre-deformation together with artificial aging, solution heat treatment on the mechanical properties.
It was found pre-deformations affect the precipitation kinetic, in terms of hardness and tensile properties.
The hardness achieved is mainly due to two factors.
Marthinsen, Combined effect of deformation and artificial aging on mechanical properties of Al−Mg−Si Alloy, Trans.