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Effect of Strain-Induced Martensitic Transformation on Coaxing Effect of Austenitic Stainless Steels
Online since: July 2008
Authors: Jae Woong Jung, Masayuki Akita, Yoshihiko Uematsu, Keiro Tokaji, Masaki Nakajima
The mechanical properties after heat treatment are listed in Table 1.
As can be seen in the table, a marked increase of hardness is observed in both steels, while the increased ratio of hardness in both steels decreases Table 1 Mechanical properties.
This means that the coaxing effect of 316 steel subjected to a prestrain of more than 25% is not affected by strain aging.
Factors of influence.
However, 304 steel showed little strain aging ability (Fig.3 (a)), thus the coaxing effect of this steel was not affected by strain aging.
As can be seen in the table, a marked increase of hardness is observed in both steels, while the increased ratio of hardness in both steels decreases Table 1 Mechanical properties.
This means that the coaxing effect of 316 steel subjected to a prestrain of more than 25% is not affected by strain aging.
Factors of influence.
However, 304 steel showed little strain aging ability (Fig.3 (a)), thus the coaxing effect of this steel was not affected by strain aging.
Online since: August 2011
Authors: Tie Jun Ma, Ying Jie Wang, Yong Zhang, Xu Chao Yuan, Guo Dong Wen, Da Lu Gao
At present, the studies about LFW mainly focus on the process, microstructure and mechanical properties.
In addition, the researches about the relationship between the texture variation and mechanical properties of LFW joints of Ti-6Al-4V, Ti-6Al-3.5Mo-1.5Zr-0.3Si and AISI316L also make a great progress [3,4,5].
On the other hand, as the oscillation frequency increases, test cavity oscillates more quickly, affecting motion of traced point.
The displacement of lead in Y direction is attributed to two factors consisting of moving and flow, but the displacements still reflect the trend of plastic flow of lead.
It makes that bottom lead obstructs above lead more seriously, which affects plastic flow of lead in Y direction.
In addition, the researches about the relationship between the texture variation and mechanical properties of LFW joints of Ti-6Al-4V, Ti-6Al-3.5Mo-1.5Zr-0.3Si and AISI316L also make a great progress [3,4,5].
On the other hand, as the oscillation frequency increases, test cavity oscillates more quickly, affecting motion of traced point.
The displacement of lead in Y direction is attributed to two factors consisting of moving and flow, but the displacements still reflect the trend of plastic flow of lead.
It makes that bottom lead obstructs above lead more seriously, which affects plastic flow of lead in Y direction.
Online since: December 2011
Authors: Mehena Oualit, Yannick Melinge, Tahar Abadlia, Raoul Jauberthie
The aim of this paper is to study the degradation mode and the responsible factors of deterioration concrete pipe, used in the sewage’s city of Rennes (France).
Some authors report an increase of the volume with a factor 2 [13, 14].
However, the raft is almost not affected
- The concrete used has good physical, chemical and mechanical properties: a high density, compressive and tensile strength equal to those of high performance concretes, which can explain the weak deteriorations in depth (concrete highly compact with low porosity)
[6] Stewart WF., Disaggregation of Environmental Factors Affecting sewer pipe failures, Journal of Infrastructure Systems 5 (4) (1999) 150 - 158
Some authors report an increase of the volume with a factor 2 [13, 14].
However, the raft is almost not affected
- The concrete used has good physical, chemical and mechanical properties: a high density, compressive and tensile strength equal to those of high performance concretes, which can explain the weak deteriorations in depth (concrete highly compact with low porosity)
[6] Stewart WF., Disaggregation of Environmental Factors Affecting sewer pipe failures, Journal of Infrastructure Systems 5 (4) (1999) 150 - 158
Online since: September 2011
Authors: M. Bnhussain, A.R. Rafiza, Y. Zarina, H. Kamarudin, Mohd Mustafa Al Bakri Abdullah, Khairul Nizar Ismail
However, there are salient parameters that affecting the compressive strength of geopolymer.
Introduction Fly ash has been used to replace cement in the concrete industry for several years because it contributes beneficial properties to concrete [1], especially with respect to its high compressive strength compared to cement.
Another factors that influence the compressive strength of geopolymer are the fly ash/alkaline activator ratio and Na2SiO3/NaOH ratio.
In this manner, the properties of the geopolymers produced under several different conditions were studied.
Davidovits, in: Properties of Geopolymer Cements, First International Conference on Alkaline Cements and Concretes (1994), p. 131-149
Introduction Fly ash has been used to replace cement in the concrete industry for several years because it contributes beneficial properties to concrete [1], especially with respect to its high compressive strength compared to cement.
Another factors that influence the compressive strength of geopolymer are the fly ash/alkaline activator ratio and Na2SiO3/NaOH ratio.
In this manner, the properties of the geopolymers produced under several different conditions were studied.
Davidovits, in: Properties of Geopolymer Cements, First International Conference on Alkaline Cements and Concretes (1994), p. 131-149
Effect of Current Density on Microstructure of Mn-Cu Thin Films via Electroplating Coating Technique
Online since: November 2013
Authors: Morteza Zandrahimi, Maryam Haeri far
Electrodeposited coating of Mn or Mn alloys is widely used because of suitable mechanical and physical properties, good sacrificial corrosion protection and low redox potential [3].
Another parameter affecting the grain size is nucleation energy barrier that is inversely proportional to the additional potential.
In fact, the variation of the current densities led to the formation of various grain sizes due to the competition between aforementioned factors.
The films were significantly affected by current density.
Spyrellis, Effect of pulse electrodeposition parameters on the properties of Ni/nano-SiC composites, 254 (2008) Appl.
Another parameter affecting the grain size is nucleation energy barrier that is inversely proportional to the additional potential.
In fact, the variation of the current densities led to the formation of various grain sizes due to the competition between aforementioned factors.
The films were significantly affected by current density.
Spyrellis, Effect of pulse electrodeposition parameters on the properties of Ni/nano-SiC composites, 254 (2008) Appl.
Online since: December 2014
Authors: Paulo Batista Gonçalves, Ignacio Herrera Navarro, José M. Balthazar, Stefan Kaczmarczyk, André Fenili, Marcos Silveira
The fuel slosh dynamics is modeled using its pendulum analogs mechanical system which parameters are identified using the Kalman filter technique.
The results obtained show that the internal fluid and material properties have a significant influence on the vibration characteristics of the shell.
The behavior of vertical conveyors under periodic loads is an important problem which can be significantly affected by non-ideal excitation.
Müller et al. investigate the fatigue potential due to electrical and mechanical loads of electronic components of forklift trucks.
Comfort is an important topic in the elevator industry, and among the different factors which affect it, vibration in the car is one of the most important.
The results obtained show that the internal fluid and material properties have a significant influence on the vibration characteristics of the shell.
The behavior of vertical conveyors under periodic loads is an important problem which can be significantly affected by non-ideal excitation.
Müller et al. investigate the fatigue potential due to electrical and mechanical loads of electronic components of forklift trucks.
Comfort is an important topic in the elevator industry, and among the different factors which affect it, vibration in the car is one of the most important.
Online since: July 2011
Authors: Ping Jie Cheng, Han Zhou Hu, Shu Guang Hu
In the general atmosphere, the most important factor affecting concrete durability is chemical action.
(2)[2] Where: 𝑘𝑗 is the corner correction factor; 𝑘𝑐𝑜2 is the C02 concentration factor; 𝑘𝑝 is the casting surface correction factor; 𝑘𝑠 is working stress coefficient; T is temperature (℃{TTP}8451 ): RH is relative humidity (%).
The above two equations are both raised by Niu Di-Tao, on consideration of factors, (2) is more detailed and applicability better than (1).
Although fcuk is a mechanical indicator, and is not closely linked with the physical and chemical process of concrete carbonation, but the compressive strength is the comprehensive reflection of the water-cement ratio, admixtures, curing conditions, construction quality and other factors and easy to measure, therefore, it is an effective and practical method to predict the carbonation depth with fcuk
The mechanical properties of steel rust [1].
(2)[2] Where: 𝑘𝑗 is the corner correction factor; 𝑘𝑐𝑜2 is the C02 concentration factor; 𝑘𝑝 is the casting surface correction factor; 𝑘𝑠 is working stress coefficient; T is temperature (℃{TTP}8451 ): RH is relative humidity (%).
The above two equations are both raised by Niu Di-Tao, on consideration of factors, (2) is more detailed and applicability better than (1).
Although fcuk is a mechanical indicator, and is not closely linked with the physical and chemical process of concrete carbonation, but the compressive strength is the comprehensive reflection of the water-cement ratio, admixtures, curing conditions, construction quality and other factors and easy to measure, therefore, it is an effective and practical method to predict the carbonation depth with fcuk
The mechanical properties of steel rust [1].
Online since: January 2014
Authors: Peter N. Bychkov, Olga V. Solodovnikova
It was concluded that the ageing of polymer dielectrics affected by electric microseconds impulses did not relate to volume charge accumulation in the polymers.
In the process of insulation use, the long-term influence of the operating voltage, as well as the number of other factors (temperature, mechanical loadings, environment, radiation and others) can result in its ageing.
The interconnection and interdependence of the influence of the ageing factors hinder the insulation ageing investigation.
A number of works points out the participation of macrostructure defects (cavities, where the partial discharges are developed) [3, 4], as well as the environmental factors [5].
Bonnet, Investigation on electrical properties of thermally aged PMMA by combined use of FTIR and impedance spectroscopies, J. of Alloys and Compounds, 469 (2009) 197–202
In the process of insulation use, the long-term influence of the operating voltage, as well as the number of other factors (temperature, mechanical loadings, environment, radiation and others) can result in its ageing.
The interconnection and interdependence of the influence of the ageing factors hinder the insulation ageing investigation.
A number of works points out the participation of macrostructure defects (cavities, where the partial discharges are developed) [3, 4], as well as the environmental factors [5].
Bonnet, Investigation on electrical properties of thermally aged PMMA by combined use of FTIR and impedance spectroscopies, J. of Alloys and Compounds, 469 (2009) 197–202
Online since: November 2011
Authors: Jie Ma, Lu Hui Lin, Xiao Li Xu
So it has seriously affected the production and economic benefits.
So intensity values of the unit are selected as a sensitive factor for prediction [3].
KPCA remains a variety of mathematical and statistical properties of PCA and also has the capacity of nonlinear problems.
KPCA provides a possible approach for the mechanical failure prediction.
And it reflects the unit’s overall operating state, so the value of vibration intensity is selected as sensitive factor for the unit status.
So intensity values of the unit are selected as a sensitive factor for prediction [3].
KPCA remains a variety of mathematical and statistical properties of PCA and also has the capacity of nonlinear problems.
KPCA provides a possible approach for the mechanical failure prediction.
And it reflects the unit’s overall operating state, so the value of vibration intensity is selected as sensitive factor for the unit status.
Online since: February 2018
Authors: Xiao Chen Wang, Quan Yang, Ren Jie Xue, An Min Yin, Yan Jie Zhang
Since the grain size has a very important influence on its mechanical properties and corrosion resistance it is significant to study the average grain size of TWIP steel.
Grain size and its distribution are important parameters which reflect the microstructure of metallic materials, and directly affect the mechanical properties and physical properties of materials, so it is an important parameter in production process control [2,3].
It is a hot research in new nondestructive testing technique and evaluation of material properties.
Kr, Ks and Kd are constants related to the material properties and αs represents the scattering attenuation coefficient.
Conclusions TWIP steel is widely used in the automobile manufacturing industry due to the characteristics of high elongation and high tensile strength, and the average grain size has an important influence on its mechanical properties.
Grain size and its distribution are important parameters which reflect the microstructure of metallic materials, and directly affect the mechanical properties and physical properties of materials, so it is an important parameter in production process control [2,3].
It is a hot research in new nondestructive testing technique and evaluation of material properties.
Kr, Ks and Kd are constants related to the material properties and αs represents the scattering attenuation coefficient.
Conclusions TWIP steel is widely used in the automobile manufacturing industry due to the characteristics of high elongation and high tensile strength, and the average grain size has an important influence on its mechanical properties.