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Online since: June 2005
Authors: Tohru Sekino, Tadachika Nakayama, Takafumi Kusunose, Koichi Niihara, Norihito Tanaka, Yamato Hayashi
Mechanical properties of Y-TZP / TiNi composites were much higher than those of Y-TZP monolith.
In Ceramics/metal composites such as tetragonal ZrO2/Ni[2, 3], Al2O3/Ni[4, 5] , there are excellent mechanical properties and ferromagnetic properties.
Cobalt is often used as additive for TiNi phase by substituting for some amount of Ni atom in order to control its properties.
Next, mechanical and electrical properties of these composites were investigated. 2.
The first factor is critical grain size of t-ZrO2, and the second factor is the strength of TiNi.
Online since: September 2014
Authors: Surachai Dechkunakorn, Niwat Anuwongnukroh, Toemsak Srikhirin, Tassanaporn Saen-Isara, Siriporn Tanodekaew
This could, in turn, affect the properties of the removable appliances as the physical and mechanical properties of auto-polymerizing orthodontic acrylic resin are greatly dependent on their composition [1].
Flexural Properties Test.
The molecular weight distribution is one of the important factors that can be used to determine the properties of acrylic resins [13].
Therefore, an optimized initiator system is one of the important factors for acceptable optical properties of specimen.
Incompatibility of initiator and accelerator system in either chemical composition or ratio could affect the optical properties of the product.
Online since: November 2014
Authors: Shu Wang Duo, Xiang Min Xu, Hao Zhang, Yi Bin Jin, Hao Chen Zhao
The influence of pulse width on microstructure and mechanical properties of CrNx coatings was examined.
In many factors that affect HPPMS, pulse width determines the working time of high power, controls the output power at work. 
The change of pulse width will greatly effect the performance of power and properties of coatings.
References [1] Han Zeng-hu, Tian Jia -wan, Dai Jia-wei, et al., Preparation and mechanical properties of magnetron sputtered CrNx thin films, Journal of Functional Materials, 2002 33(5):500-502
Microstructure, mechanical and tribological properties of Cr–C–N coatings deposited by pulsed closed field unbalanced magnetron sputtering, Surf.
Online since: December 2011
Authors: Jing Pei Xie, W.Y. WANG, Ning Bo Li
Study on Organization and Properties of the new wear-resistant steel LI Ningbo1,a, XIE Jingpei1,b, WANG Wenyan1,c (1Materials Science and Engineering School of Henan University of Science and Technology ,Luoyang,471003,China aningbo721403@163.com, bxiejp@mail.haust.edu.cn, cwangwy1963@163.com ) Key words:new wear-resistant steel, mechanic properties, friction wear Abstract:By means of wear analysis of the wear-resistant steel used in the process, and adjust the wear-resistant steel composition, by adding alloying elements Cr, Mo and so on, optinlizing heat treatment technique, to get new wear-resistant steel.
The HR-150A rock well hardness tester and JB-300B impact tester as well as SHIMADZUAG-I250KV on electronic tensile testing machine were used to test the mechanical properties of materials.
Figure 2-1 Metallographic organization (a)1# (b)2# (c)3# (d)4# 2 Mechanical properties and the tensile fracture morphology analysis In the process of monopodium stretching, the coarser the grain is, the greater the stress and strain concentrate.
Table 3 Comparison of mechanical properties Sample number Tensile strength(MPa) Toughness(J/cm2) Hardness(HRC) 1 1724.2 16.3 52.1 2 2000.1 24.3 49.0 3 1984.5 28.2 52.7 4 1804.1 18.6 48.7 From the Figure 2 (a) and (d) the tensile fracture morphology, can see stress concentration of crack front changes the crack towards, thereby, so that cleavage cell appears to reduce dimple, and brittle fracture mechanism gradually increased , so the sample the section has only a few of dimples,and dimple patterns is bulky , its quasi-cleavage fracture, and there is inclusion therefore σ b low.
Factors affecting thestructure of chromium and chromium molybdenum white irons.
Online since: May 2014
Authors: Lyudmila M. Kaputkina, Evgueni I. Poliak, Gwenola Herman, Artem Marmulev
Effects of Thermomechanical Processing on Uniformity of Microstructure and Properties of AHSS Artem V.
Introduction For manufacturing of advanced high strength steel (AHSS) sheet products for automotive applications it is imperative to produce hot rolled bands with predefined microstructure and mechanical properties optimal for downstream processing.
Factors Responsible for Non-Uniformity of Hot Band Microstructure If the phase transformation of austenite on the run-out table is incomplete, it continues after the hot band coil has been made.
These two factors increase the extent of phase transformation on run-out table and consequently less transformation takes place in the coil.
[2] Marmulev A.V., Herman G., Poliak E.I., Kaputkina L.M., Factors Affecting Gauge Uniformity of Flat Cold Rolled AHSS, Proceeding of Materials Science and Technology (MS&T- 2011) International Conference, October 16-20, 2011, Columbus, Ohio, USA, p. 470 – 476.
Online since: January 2013
Authors: Ying Li, Ji Ke Liu, Wen Juan Gu
However, the stability of the impregnant emulsion is affected by many factors.
Research on the factors that affect it stability is valuable for us to prolong the storage term and improve the performance of the product.
Through comparative analysis, it was found that there were three factors which affect its stability, which were studied separately in this paper.
Effect of pH on the stability of the paste like impregnant The acid & base property is an important factor that affect the stability of silicone water repellent paste.
The factors that affect the stability were studied.
Online since: March 2014
Authors: Rahul Davis
Heat treatment comprises of the application of heat, to a material to attain desired material properties (e.g. mechanical, electrical, magnetic, e-t-c.) as the material usually undergoes phase micro-structural and crystallographic changes [7].
The highest possible performance is obtained by determining the optimum combination of design factors.
It possesses the application of orthogonal arrays to identify the factor(s) and level(s) that affect the response data significantly.
Since there is a significant role of this factor Height of the Hammer also in Impact Testing therefore three different heights of the hammer were selected to see the affect.
Daramola et al: Effects of Heat Treatment on the Mechanical Properties of Rolled Medium Carbon Steel, Journal of Minerals & Materials Characterization & Engineering, Vol. 9, No.8, 2010, pp.693-708
Online since: November 2014
Authors: Laily Suraya, Bukhari Manshoor, Mohd Hadzley, Mohd Amran Ali, Raja Izamshah, Nur Izan Syahriah Hussein, Mohd Razali Muhamad, Mohd Amri Lajis, Taufik Taufik, Nor Atiqah Jaffar Sidek
It is found that the current and pulse off time are significantly effected the MRR, EWR and Ra while pulse on time and voltage are less significant factors that affected the responses.
It finds uses in numerous places due to these properties such as marine, manifolds, motor casings, cast doors, pumping applications.
It shows that peak current was dominant factor affecting MRR followed by pulse off time, pulse on time and voltage.
It can be concluded that peak current was the main factor affecting MRR, EWR, and Ra.
The others factors such as voltage, pulse on time and pulse off time are less significant affecting the responses.
Online since: February 2008
Authors: Hugo Ricardo Zschommler Sandim, Carlos Roberto Grandini, Luciano Henrique de Almeida, Odila Florêncio, Luciano Monteiro da Silva
Metals that present bcc crystalline structure, when receiving addition of interstitial atoms as oxygen, nitrogen, hydrogen and carbon, undergo significant changes in their physical properties, being able to dissolve great amounts of those interstitial elements, thus forming solid solutions.
Interstitial diffusion coefficients, pre-exponential factors and activation energies were calculated for nitrogen in the Nb-2.0wt%Ti alloys.
This characteristic facilitates its application in materials that exhibit high mechanical resistance in high temperatures.
Metals that have bcc structure, when they receive the addition of interstitial atoms as oxygen, nitrogen, hydrogen and carbon, suffer significant changes in their physical properties, being able to dissolve great amounts of those elements, thus forming solid solutions.
Normally, internal friction is determined by damping mechanical oscillations and measured as a function of temperature.
Online since: January 2012
Authors: Hidekazu Murakawa, Hisashi Serizawa, Seigo Tomiyama, Tsuyoshi Hajima
As the results assuming the influence of grain orientation on the grain boundary, it was found that the anisotropic mechanical property of grain boundary (interaction between opening and slipping deformations) would be a dominant factor of the fracture process.
Mechanical Property of Grain.
The properties of each grain in metallic materials have anisotropy due to the direction of grain growth.
Mechanical Property at Grain Boundary.
Conclusions Fig. 7 Effect of mechanical property in grain on von Mises stress distributions.
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