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Online since: August 2018
Authors: Victor Geantă, Ionelia Voiculescu, Maria-Diana Vrânceanu, Robert Ciocoiu, Cosmin Mihai Cotruț, Bogdan Istrate
The Influence of Chromium Content on the Structural and Mechanical Properties of AlCrxFeCoNi High Entropy Alloys Victor GEANTĂ1,a*, Ionelia VOICULESCU1,b, Bogdan ISTRATE2,c, Diana M.
The structural and mechanical properties of AlCrxFeCoNi alloy was studied in this paper for different content of chromium (atomic ratio, x= 0.2 to 2.0 at. %).
Besides the high entropy effect, HEA’s also present sluggish diffusion and severe lattice distortions, which have a major effect on their microstructures and properties.
Elemental composition is a critical factor in alloy design, which will definitely affect the alloying behavior and properties of high entropy alloys.
The statistical analysis performed allows determining the importance of each chemical element and revealing their significance on the mechanical properties variation.
Online since: June 2021
Authors: Manish S. Deshmukh, Rajesh T. Shelke, Shailesh S. Pimpale, Dheeraj S. Deshmukh
If the crosslinking is performed in sudden manner, the affects caused due to it on the UHMWPE are reduction in solidness, mechanical properties embroilment and reduced immobility of the polymers.
The application of the XLPE results in to insert misalignments but non effect on then mechanical properties.
This material comprises super biocompatibility thank to its optimum and effective mechanical properties, it is also discovered that the trash material properties were also biocompatible [126].
Affatato, “Ultra-High Molecular Weight Polyethylene: Influence of the Chemical, Physical and Mechanical Properties on the Wear Behavior.
Toni, “Risk factors for ceramic liner fracture after total hip arthroplasty,” Hip Int, vol. 22, no. 6, pp. 607–614, Dec. 2012, doi: 10.5301/HIP.2012.10339
Online since: September 2013
Authors: Si Hai Zhao, Zhe Qian Zhao, Lin Yu Jiao, Yu Wei Hu, Ji Shen Dong, Ji Ye Gao
Nano-magnetic Rheological Fluid Magnetorheological fluid is such a material that can change drastically in rheological properties under magnetic field.
Factors Affecting the Rheological Properties of Magnetorheological Fluid In the presence of applied strong magnetic field, magnetorheological fluid shows a nature of non-Newtonian fluid, with its stress-strain relation generally described in the Bingham plastic model [2].
The factors affecting the yield stress of magneto-rheological fluid are as follows: (1) The influence of the particle saturation magnetization: When the particles are completely magnetically saturated, the maximum yield stress of the magnetorheological fluid is τy∝ Ms2 (where Ms is the saturation magnetization of magnetic particles) [6].
Rheological Properties of Nanometer Iron-nitride MRF The yield stress of the magnetorheological fluid, characterizing the cure strength of this material, is the main parameter of this material.
The magnetorheological fluid rheological properties of the test device used in this paper is a slit rheometer[8], an indirect measuring method.
Online since: August 2012
Authors: Jun Min Li, Jin Ge Wang, Xing Qiao Deng
Research of interpolation algorithm for improving the movement stability of X-Y worktable of NC machine Li Junmin12, a , Wang Jinge2,b and Deng xingqiao2,c 1College of Manufacturing Science and Engineering,SiChuan,University,Chengdu 610064,China 2 School of Mechanical Engineering & Automation ,XiHua University,Chengdu 610039,China alijunmin1975@163.com, bwangjg@mail.xhu.edu.cn , c dxq_zyc@126.com Keywords:NC machine; interpolation algorithm; kinematics; dynamics Abstract: After making an analysis of the primary factors affecting the movement balance of NC machine, the paper proposed an new method to enhance its movement stability, which based on kinematic and dynamic analysis of the servo mechanism.
Introduction There are many factors which effect working accuracy of NC machine, including NC machine’mainframe accuracy and component accuracy and servo system accuracy and so on.
Meanwhile, kinematics and dynamics’problems of servo mechanism are also important factors which effect working accuracy, and the problems become more outstanding with the development of NC machine’high-accuracy and high-efficiency.
Meanwhile, in order to simplify model, the mechanical drive system's external load is ignored, which will not bring a great influence on simulation result.
ANALYSING KINEMATIC AND DYNAMIC PROPERTIES OF A MACHINE TOOL ALONG CURVED TOOL PATH IN HIGH MACHINING,CHINESE JOURNAL OF MECHANICAL ENGINEERING. 2002(1): 31-3
Online since: July 2013
Authors: Shi Wu Bai, Chang Xue Xu, Liu Qing Yang, Yu Liu, Bin Feng
Physical Simulation on Microstructure and Properties for Weld HAZ of X100 Pipeline Steel Yu Liua, Liuqing Yangb, Bin Fengc, Shiwu Baid and Changxue Xue Pipeline Research Institute of CNPC, Langfang, 065000, P.
China aly_liuyu@126.com, byanglq99@yahoo.com.cn , cfengb58@126.com, dbsw845@163.com, excx939@163.com Keywords: X100 pipeline steel, Physical simulation, SH-CCT, Microstructure and Properties Abstract.
In this paper, the simulation heat affected zone (HAZ) continuous cooling transformation (SH-CCT) diagram of X100 pipeline steel was drew by using Gleeble 3500-HS thermal/mechanics simulation test machine, and the microstructure and properties of the HAZ of single-pass/double-pass welding were simulated and studied.
In this paper, the continuous cooling transformation rules of the weld HAZ for X100 pipeline steel was researched by thermal simulation method, the microstructure and properties of weld HAZ of single-pass and double-pass welding were simulated and analyzed, the effects of different welding thermal cycle parameters on the microstructure and properties of weld HAZ were investigated, and the control measures to optimize microstructure and properties of weld HAZ of X100 pipeline steel were proposed, which provided a technical basis for the welding process of X100 pipeline steel. 2 Experimental method A typical X100 line pipe is chosen as experimental material whose outer diameter is 1016mm and wall thickness is 14.7mm.
Its chemical composition is listed in Table 1 and the mechanical properties are shown in Table 2.
Online since: December 2014
Authors: Lei Nie, Wen Jing Xiang, Hua Jing Li, Fei Huang
Researches on Lifetime Modeling of LED luminaires Huajing Li1, a, Lei Nie1, 2, b* ,Fei Huang1, c and Wenjing Xiang1,3,d 1School of Mechanical Engineering, Hubei University of Technology, Wuhan, 430068, P.
The temperature and vibration have great influence on the properties and materials of LED luminaires.
Owing to those properties, its application fields extend greatly [1,2].
This paper designed to explore the properties and performances of LED luminaires though interactive test.
However, the LED structure was varying and the affecting factors was changing.
Online since: September 2011
Authors: David John Smith, C.M. Younes, Peter E.J. Flewitt, B. Chen
In the present work, the link between the microstructural factors and the susceptibility to inter-granular high temperature creep failure is considered.
Indeed inter-granular creep cracks have been observed in the heat affected zones (HAZs) of thick section weldments in high carbon austenitic stainless steel headers [2].
This confirmed the methodology of our previous study about the influence of thermo-mechanical history on grain boundary fracture [1].
The present work demonstrates that these two factors have a detrimental influence on creep ductility, although the quantitative assessment of these two factors was not established yet.
Spindler, Effects of multiaxial stress state and microstructure on creep properties of austenitic stainless steel, Int.
Online since: November 2011
Authors: Wei Zhan Zhang, Shu Lin Wang, Wen Hua Chen
The factors such as the fitness between tool and toolhoder, the length of oil chamber bulge, oil pressure and rotation speeds are analyzed in the paper, the results can offer some effectively guidelines and reference for toolhoder machining and processing quality control.
Fig.6 Analysis results when a force F is applied Fig.7 Radial stress figure when a force F is applied Effect of fit clearance.The fit clearance affects not only the change of the clamping length, but also affects the change of the contact stress between chuck and tool.
Relative to the above two factors, the oil pressure has little effect on the radial grip clamping rigidity.
The factors such as different oil, length of the oil chamber bulge, different fit clearance and different rotation speed are analyzed to the effect on chuck grip rigidity.
The following conclusions can be drawn: (1)In the four factors, the speed of the chuck is the most obvious factor to rigidity, and the rotation speed will lead to larger swings on tool so affects the surface quality
Online since: July 2014
Authors: Xian Li Liu, Sheng Gang Song, Rong Yi Li, Yan Cui Jiang
They affect spell near joint processing quality.
Experimental tool path design Considering the factors of statistics, between of A and B two blocks respectively, B and C for a group of the same between two blocks of the milling test.
(1) From the calculated values ​​in Table 1 and Table 2, it can be seen milling force change is the main factor affecting the surface topography
Journal of Mechanical Engineering,2000,36(3):13-16
Environmental variability of modal properties[J].
Online since: March 2010
Authors: De An Yang, Li Li Wang, Yu Wang
Some major factors that influenced the sol-gel process including PH value, quantity of water were discussed in detail.
Introduction Aluminum nitride (AlN) has long been considered as a competitive substrate material for electronic packing applications because of its distinguished thermal and dielectric properties [1, 2].
In this paper, a glass chemically compatible with AlN substrate was obtained by sol-gel method and its properties were analyzed.
Effect of glass binder on the properties of metalized film.
Along with the increasing glass content, better wetting behavior are fond, but too much glass affects the effective contact of silver during sintering and weakens the strength of the network, resulting in the decrease of the mechanical connection between the glass and metal, thus the destruction may happen in the interface of glass and conductor layer, leading lower strength.
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