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Online since: July 2018
Authors: Andrey Belyakov, Rustam Kaibyshev, Marina Tikhonova, Pavel Kusakin
The steel plates were cold rolled to total reductions of 20% to 95% (total true strains of 0.22 to 3.0) at room temperature.
The data for hig-Mn austenitic steels are bounded by loci of the form of Eq. (4) with ky of about 350 MPa mm0.5 and 450 MPa mm0.5.
An increase in the rolling reduction promotes the grain refinement after recrystallization annealing.
The data for hig-Mn austenitic steels are bounded by loci of the form of Eq. (4) with ky of about 350 MPa mm0.5 and 450 MPa mm0.5.
An increase in the rolling reduction promotes the grain refinement after recrystallization annealing.
Online since: December 2010
Authors: Gennady A. Salishchev, Sergey V. Zherebtsov, Egor A. Kudryavtsev
Such an effect leads to fast increase in dislocation density and hardening due to a reduction in the effective slip distance [8] (Fig. 1b).
TEM images (bright field) of microstructure of Ti after the first step of “abc” deformation at 400°C and 10-3 s-1 to the height reduction e»0.5.
The value of activation energy is in agreement with data obtained earlier by Conrad [12] and indicated that the typical mechanism of warm plastic deformation of conventional titanium as prismatic slip of dislocations controlled plastic flow.
TEM images (bright field) of microstructure of Ti after the first step of “abc” deformation at 400°C and 10-3 s-1 to the height reduction e»0.5.
The value of activation energy is in agreement with data obtained earlier by Conrad [12] and indicated that the typical mechanism of warm plastic deformation of conventional titanium as prismatic slip of dislocations controlled plastic flow.
Online since: February 2013
Authors: Yi Tan Zhang, Han Yang, Rui Xiao Zheng, Su Jing Ge, Chao Li Ma
The load and holding times were 10g and 15s, respectively.Each data was an average of more than 5 points.
The repetitive impact of balls could cause the loosely attached particles to be detached resulting in reduction in size of clusters to 35-40μm after 6 hours of milling (Fig. 2).
Further milling resulted in severe plastic deformation of clusters and further reduction in particle size with continued milling.
The repetitive impact of balls could cause the loosely attached particles to be detached resulting in reduction in size of clusters to 35-40μm after 6 hours of milling (Fig. 2).
Further milling resulted in severe plastic deformation of clusters and further reduction in particle size with continued milling.
Online since: January 2016
Authors: Mitsuyoshi Nomura, Yong Bo Wu, Si Si Li
Most of the available machinability data on Inconel 718 were based on turning, cutting and milling [4-6].
These results demonstrated that the ultrasonic vibration amplitude can greatly contribute to the reduction of grinding forces, implying that the ultrasonic vibration can significantly benefit the grinding efficiency in the grinding process of Inconel 718.
The improvement of surface quality in UAG can be considered to be the contribution of the grinding forces reduction [11].
These results demonstrated that the ultrasonic vibration amplitude can greatly contribute to the reduction of grinding forces, implying that the ultrasonic vibration can significantly benefit the grinding efficiency in the grinding process of Inconel 718.
The improvement of surface quality in UAG can be considered to be the contribution of the grinding forces reduction [11].
Online since: October 2010
Authors: Zhi Qi Liu, Xu Dong Li, Jian Li Song, Hui Ping Qi, Yong Tang Li
In the experiments, a computer data acquisition
system was used, the torque of the spindle and the feeding force of the slider are transferred into
electrical signals, treated and A/D transferred, then the real-time fore and energy parameters can be
calculated and the characteristics of the force and energy variation can be obtained.
However, too small feeding speed will result in the creeping of the hydraulic cylinder and reduce the precision of the rolling process, as well as the reduction of the production efficiency.
Slower radial feeding speed and faster spindle rotating speed is better for the reduction of the deformation resistance and the improvement of the production efficiency.
However, too small feeding speed will result in the creeping of the hydraulic cylinder and reduce the precision of the rolling process, as well as the reduction of the production efficiency.
Slower radial feeding speed and faster spindle rotating speed is better for the reduction of the deformation resistance and the improvement of the production efficiency.
Online since: August 2019
Authors: Mashuri Mashuri, Umi Nuraini, Yhuanita Nurul Kaukaba, Suasmoro Suasmoro
The microstructure results confirmed that Y3+ improves densification and causes reduction of grain growth.
The phases present in the sample were identified using Match II software of XRD data collected by X-ray diffraction apparatus (X’Pert Diffractometer, Philips) using CuKα radiation.
The increasing frequency (from 1.27 kHz to 1.27 MHz) is accompanied by a reduction in the role of space charge polarization then it replaced by a dipolar polarization.
The phases present in the sample were identified using Match II software of XRD data collected by X-ray diffraction apparatus (X’Pert Diffractometer, Philips) using CuKα radiation.
The increasing frequency (from 1.27 kHz to 1.27 MHz) is accompanied by a reduction in the role of space charge polarization then it replaced by a dipolar polarization.
Online since: July 2012
Authors: Kun Liu, Shu Min Fei, Mu Lan Wang
With regard to the reduction of the computational cost, a boundary tracing method is employed to extract the contour information instead of numerous scanning operations of the sensitive region.
2.
Performance Index of the Recognition Arithmetic The most important data is the position of the cotton’s centroid for the picker robot.The pick precision is related not only to the absolute error of the centroid recognition but also to the cotton size.
With the concern about the reduction of the computation complexity, the cotton image is smoothed firstly by the opening-closing operation.
Performance Index of the Recognition Arithmetic The most important data is the position of the cotton’s centroid for the picker robot.The pick precision is related not only to the absolute error of the centroid recognition but also to the cotton size.
With the concern about the reduction of the computation complexity, the cotton image is smoothed firstly by the opening-closing operation.
Online since: October 2011
Authors: Zhan Li Gong, Shou Biao Tan, Rui Xing Li, Na Bai
The major SRAM array failures (read failure, access time failure, write failure, hold failure) will be degraded due to:
1) sensitivity of process variation (PV);
2) dramatic reduction of on-to-off current ratio (Ion/Ioff)[1, 6, 8].
It shows a leakage power reduction and allows the overall power consumption to be reduced. 2.4 Write Operation Maintaining a sufficient write margin is challenging in subthreshold or nearthreshold SRAM design due to the small gate overdrive, large load capacitance and process variation.
Fortunately, it is demonstrated that the data correctness is not affected even if the node is charged to a value smaller than the standard values or discharged to a value larger than the standard values. 2.5 Total energy versus supply voltage SRAM arrays (256×16) is realized in IBM 0.13 um, 8-metal CMOS process technology.
It shows a leakage power reduction and allows the overall power consumption to be reduced. 2.4 Write Operation Maintaining a sufficient write margin is challenging in subthreshold or nearthreshold SRAM design due to the small gate overdrive, large load capacitance and process variation.
Fortunately, it is demonstrated that the data correctness is not affected even if the node is charged to a value smaller than the standard values or discharged to a value larger than the standard values. 2.5 Total energy versus supply voltage SRAM arrays (256×16) is realized in IBM 0.13 um, 8-metal CMOS process technology.
Online since: September 2011
Authors: Yong Liu, Ming Yang Zhang, Wei Zhang
Among these methods, EPM (Elemental Powder Metallurgy) processes provide technical as well as economical benefits over conventional metallurgical processes, due to cost reduction, improvement in performance and near net shaping [12].
The true stress-true strain under different strain rates at 1200℃, is used as input data for the simulation.
The deformation was 30% in reduction.
The true stress-true strain under different strain rates at 1200℃, is used as input data for the simulation.
The deformation was 30% in reduction.
Online since: January 2017
Authors: Andrey N. Dmitriev, K. Chen, M.O. Zolotykh, Galina Yu. Vitkina
Introduction
One of the factors to increase efficiency of a blast furnace is by a cost reduction of cast-iron production by an extension of equipment service life.
It occurs due to formation of blind areas brickwork segments for which it is impossible to build erosion model due to shortage of initial data for modelling.
One of the reasons for reduction of the operating period is the hot metal breakthrough of the firebrick lining in the blast furnace bottom (hearth).
It occurs due to formation of blind areas brickwork segments for which it is impossible to build erosion model due to shortage of initial data for modelling.
One of the reasons for reduction of the operating period is the hot metal breakthrough of the firebrick lining in the blast furnace bottom (hearth).