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Online since: June 2010
Authors: Peter Hodgson, Debashish Bhattacharjee, László S. Tóth, Arunansu Haldar, Rimma Lapovok, Ilana B. Timokhina, Dmitry Orlov
Structure and Mechanical Properties of Asymmetrically Rolled IF Steel Sheet
Dmitry Orlov
1,a, Rimma Lapovok1,b, Laszlo S.
Microstructure, texture and mechanical properties were analysed.
Mechanical properties were determined in tensile tests on flat samples scaled down by factor of 2.5 from standard ASTM E8M-08.
Therefore, reversal asymmetric rolling improves the mechanical properties.
Summarising the reported results, it can be seen that asymmetric rolling with one roll idle does affect the microstructure, texture and mechanical properties evolution in IF steel during deformation.
Microstructure, texture and mechanical properties were analysed.
Mechanical properties were determined in tensile tests on flat samples scaled down by factor of 2.5 from standard ASTM E8M-08.
Therefore, reversal asymmetric rolling improves the mechanical properties.
Summarising the reported results, it can be seen that asymmetric rolling with one roll idle does affect the microstructure, texture and mechanical properties evolution in IF steel during deformation.
Online since: April 2013
Authors: Jian Huan Zhao, Huan Zhou
Building materials is of various kinds, and its properties varied, it can generally be divided into: physical properties, mechanical properties, chemical properties, durability, etc.
The materials in different parts of a building are affected by a variety of different external factors effect.
Some building materials also have additional properties except for those basic properties which are to realize building function, for example, some coating can release formaldehyde which is harmful to human.
Additional properties make material use restricted, and then affect the market price.
In order to better analysis and determine the factors of building materials price changes, it is necessary to understand the main properties of building materials and master the material quality evaluation index.
The materials in different parts of a building are affected by a variety of different external factors effect.
Some building materials also have additional properties except for those basic properties which are to realize building function, for example, some coating can release formaldehyde which is harmful to human.
Additional properties make material use restricted, and then affect the market price.
In order to better analysis and determine the factors of building materials price changes, it is necessary to understand the main properties of building materials and master the material quality evaluation index.
Online since: February 2018
Authors: Arturs Lukasenoks, Rolands Cepuritis, Andrejs Krasnikovs
Rheological Properties.
Mechanical properties of the cementitious composites were determined as the so called single crack tests in tension and bending.
However, the results in Table 2 also further indicate that the L/d ratio is not the only factor affecting the rheology of the fresh mixes.
These observations indicate that in the developed cementitious composite materials the fibres at 1 vol% dosage can not only affect the post-cracking behaviour but also have a considerable effect on the pre-cracking mechanical properties.
However, the fresh state rheological characteristics seem to be affected also by the surface properties of the fibres.
Mechanical properties of the cementitious composites were determined as the so called single crack tests in tension and bending.
However, the results in Table 2 also further indicate that the L/d ratio is not the only factor affecting the rheology of the fresh mixes.
These observations indicate that in the developed cementitious composite materials the fibres at 1 vol% dosage can not only affect the post-cracking behaviour but also have a considerable effect on the pre-cracking mechanical properties.
However, the fresh state rheological characteristics seem to be affected also by the surface properties of the fibres.
Online since: October 2016
Authors: R. Megavarnan, R. Shanmuga Prakash, G. Rajamurugan
Comparative Study on Mechanical Properties of GMA Welded IRSM41 Mild Steel Plate Based on Grain Flow Direction
R.
A range of welding process have been developed so far using single or combination above factors namely heat, pressure and filler wire.
The failure mechanisms associated with their mechanical and microstructural properties is taken as parameters for study.
The result indicated that the shielding gas composition have great influence on mechanical properties.
Hence, certain mechanical properties are increased when a sample is tested in the along the grain flow direction.
A range of welding process have been developed so far using single or combination above factors namely heat, pressure and filler wire.
The failure mechanisms associated with their mechanical and microstructural properties is taken as parameters for study.
The result indicated that the shielding gas composition have great influence on mechanical properties.
Hence, certain mechanical properties are increased when a sample is tested in the along the grain flow direction.
Online since: December 2024
Authors: Xian Wei Niu, Tao Ren, Jun Ming Zhang
After welding, the microstructure and mechanical properties of the joint were observed.
The factors affecting the properties of welded joints were explored by combining microstructure with mechanical tests.
Chemical composition (mass fraction, %) and mechanical properties of base metal.
(1) Welding heat input is the main factor affecting weld formation.
It is suggested to further study the factors affecting the toughness of the weld zone and propose corresponding control measures to guide the prefabricated welding of double-connected pipes.
The factors affecting the properties of welded joints were explored by combining microstructure with mechanical tests.
Chemical composition (mass fraction, %) and mechanical properties of base metal.
(1) Welding heat input is the main factor affecting weld formation.
It is suggested to further study the factors affecting the toughness of the weld zone and propose corresponding control measures to guide the prefabricated welding of double-connected pipes.
Online since: August 2019
Authors: M.A. Gorbunova, D.M. Shukhardin, Elmira R. Badamshina, V.A. Lesnichaya, Denis V. Anokhin
NEW POLYURETHANE UREA THERMOPLASTIC ELASTOMERS WITH CONTROLLED MECHANICAL AND THERMAL PROPERTIES FOR MEDICAL APPLICATIONS
M.A.
Fine-tuning of morphology and mechanical properties allows to desighn adaptive materials with shape memory.
Such TPUs change their shape under the influence of various factors (temperature, light, magnetic and electric field, etc.) and belong to the class of adaptive, or so-called "smart" polymers [4, 5].
Results and Discussion Mechanical properties of adaptive materials are determined by the physical structure of crystals of the soft block.
This approach allows the mechanical and thermal properties of adaptive materials to be adjusted and the shape memory to be controlled.
Fine-tuning of morphology and mechanical properties allows to desighn adaptive materials with shape memory.
Such TPUs change their shape under the influence of various factors (temperature, light, magnetic and electric field, etc.) and belong to the class of adaptive, or so-called "smart" polymers [4, 5].
Results and Discussion Mechanical properties of adaptive materials are determined by the physical structure of crystals of the soft block.
This approach allows the mechanical and thermal properties of adaptive materials to be adjusted and the shape memory to be controlled.
Online since: January 2012
Authors: Chang Chuan Hsu, C. Y. A. Tsao, Yi Chuan Chen, Sy Cherng Yang
6061 Aluminum Powder Making and its Thermal and Mechanical Properties
Yi-Chuan Chen1, C.
Thermal properties were measured via DSC.
The relationships among the atomization parameters, powder shapes and sizes, powder densities, thermal properties, microstructures and the mechanical properties were analyzed and rationalized.
Introduction The castability and the mechanical properties of the aluminum alloys can be improved by adding Mg, Si… etc.
Therefore, any factor that would affect the spheroidizing time, such as oxidation, which affects the surface tension, would affect the shape of the powders.
Thermal properties were measured via DSC.
The relationships among the atomization parameters, powder shapes and sizes, powder densities, thermal properties, microstructures and the mechanical properties were analyzed and rationalized.
Introduction The castability and the mechanical properties of the aluminum alloys can be improved by adding Mg, Si… etc.
Therefore, any factor that would affect the spheroidizing time, such as oxidation, which affects the surface tension, would affect the shape of the powders.
Online since: October 2014
Authors: Yu Xian Li, Mei Hong Liu, Xi Chen Yuan, You Dong Jia
Finally analyses and summarizes the main factors which we must consider to improve the sealing property of non-asbestos fiber gasket, and points out the main research ways of non-asbestos in the future.
Therefore, the joint components (flange, gasket and bolt) own state and external factors such as working condition (including medium, pressure and temperature), and assembling status must all be taken into consideration.
The factors must be considered to improve the sealing property of non-asbestos gasket.
These new type of non-asbestos sealing composite materials not only improves the synthetic mechanical properties but also reduce the product’s cost [9-11].
There is still certain gap in thermal endurance properties [18].
Therefore, the joint components (flange, gasket and bolt) own state and external factors such as working condition (including medium, pressure and temperature), and assembling status must all be taken into consideration.
The factors must be considered to improve the sealing property of non-asbestos gasket.
These new type of non-asbestos sealing composite materials not only improves the synthetic mechanical properties but also reduce the product’s cost [9-11].
There is still certain gap in thermal endurance properties [18].
Online since: May 2020
Authors: M.A. Mokeev, L.A. Urkhanova, A.N. Khagleev, Denis B. Solovev
The Impact Evaluation of Factors on the Adhesion of Modified Polytetrafluoroethylene Films in a Glow Discharge Non-Thermal Plasma
M.A.
However, after modification, the polymer film changes its physical properties, becomes brittle, changes the transparency of the film.
Based on the data obtained, a mathematical model of the dependence of the change in the contact properties of the resultant feature (wetting angle) of the PTFE film on the factor values of which are: voltage (x1) and discharge current (x2) in the reaction chamber.
According to the data obtained, a matrix of experimental planning of the wetting angle depends on 2 factors: amperage (I) and voltage (U) (table. 2).
Kuznetsov, Adhesive properties of polytetrafluoroethylene films modified by plasma, High energy chemistry. 43 (2009) 6 569-572
However, after modification, the polymer film changes its physical properties, becomes brittle, changes the transparency of the film.
Based on the data obtained, a mathematical model of the dependence of the change in the contact properties of the resultant feature (wetting angle) of the PTFE film on the factor values of which are: voltage (x1) and discharge current (x2) in the reaction chamber.
According to the data obtained, a matrix of experimental planning of the wetting angle depends on 2 factors: amperage (I) and voltage (U) (table. 2).
Kuznetsov, Adhesive properties of polytetrafluoroethylene films modified by plasma, High energy chemistry. 43 (2009) 6 569-572
Online since: September 2014
Authors: Pawel Kucharczyk, Sebastian Münstermann
The microstructure of welded joints differs significantly from that of the base material, what changes their mechanical properties and influences fatigue life.
This leads to a change of mechanical properties and deformation behavior.
A common approach for the estimation of mechanical properties is the sampling of micro tensile (flat or round) specimens using electro-discharge machining [1].
Fig. 4: Hardness distribution in the heat treated specimen Local mechanical properties For the estimation of the local mechanical properties small samples with the respective bulk microstructure were manufactured from heat-treated work pieces and tested in monotonic tensile tests.
Fig. 5: Local mechanical properties of coarse grained zone estimated using heat treated samples Conclusions In the current work an approach for the determination of the local mechanical properties of welded joints was presented.
This leads to a change of mechanical properties and deformation behavior.
A common approach for the estimation of mechanical properties is the sampling of micro tensile (flat or round) specimens using electro-discharge machining [1].
Fig. 4: Hardness distribution in the heat treated specimen Local mechanical properties For the estimation of the local mechanical properties small samples with the respective bulk microstructure were manufactured from heat-treated work pieces and tested in monotonic tensile tests.
Fig. 5: Local mechanical properties of coarse grained zone estimated using heat treated samples Conclusions In the current work an approach for the determination of the local mechanical properties of welded joints was presented.