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Online since: February 2011
Authors: Jian Xin Guo, Jie Liu, Jun You Liu
Boron can dissolve trace amounts of boron, and the boron more than 0.01% can form boride and precipitate along the grain boundary, which results in the reduction in toughness.
The solubility of carbon in austenite at 1403K is follows: [C]=0.2244%, A large number of solid solution of carbon in high temperature austenite must cause the stability of austenite and the content of rest austenite in matrix increases restively after quenching.
The solubility of carbon in austenite at 1403K is follows: [C]=0.2244%, A large number of solid solution of carbon in high temperature austenite must cause the stability of austenite and the content of rest austenite in matrix increases restively after quenching.
Online since: March 2007
Authors: J.H. Yu, Y.F. Zhu, Wen Huai Tian, Shi Cheng Zhang, Xing Guo Li
It was found that the CdSe
nanoparticles contained some defects or dislocations, which might be caused by the stacking faults
at the surfaces and the grain boundaries during the CdSe nanoparticles formation.
The formation of small CdSe clusters with certain "magic" agglomeration numbers [11] might have the reason that particle growth proceeds via coalescence, i.e., two small clusters fuse to a larger one.
The formation of small CdSe clusters with certain "magic" agglomeration numbers [11] might have the reason that particle growth proceeds via coalescence, i.e., two small clusters fuse to a larger one.
Online since: July 2004
Authors: M. Cattani, A.R. Vaz, R.J.C. Farias, M.C. Salvadori
In our precedent works[12,13] Pt
thin films have been deposited by the same technique; there are clearly shown the nanostructured
nature of these films and the moundlike structure of their surfaces, due to the Pt grains.
This quantization is estimated by the parameter N ≈ (3n/π) 1/3 d, which is the number of subbands occupied by the electron gas.
This quantization is estimated by the parameter N ≈ (3n/π) 1/3 d, which is the number of subbands occupied by the electron gas.
Online since: April 2021
Authors: Yong Ho Sohn, Abhishek Mehta
., all HEAs should exhibit high temperature stability based on high entropy effect, high temperature strength owing to limited grain growth, good diffusion barrier application due to sluggish diffusion kinetics, etc.
A large number of diffusion couples with different terminal alloy compositions should be examined to map the complete solid solubility limit.
This method can be challenging and costly due to the use of radioactive isotopes and the required number of experiments required to assess composition and temperature dependence.
In general, lowering in DNi * was not observed in alloys with an increase in ΔSmix (number of elements) of the alloys investigated.
Divinski, Radioactive isotopes reveal a non sluggish kinetics of grain boundary diffusion in high entropy alloys, Scientific reports 7 (2017) 12293
A large number of diffusion couples with different terminal alloy compositions should be examined to map the complete solid solubility limit.
This method can be challenging and costly due to the use of radioactive isotopes and the required number of experiments required to assess composition and temperature dependence.
In general, lowering in DNi * was not observed in alloys with an increase in ΔSmix (number of elements) of the alloys investigated.
Divinski, Radioactive isotopes reveal a non sluggish kinetics of grain boundary diffusion in high entropy alloys, Scientific reports 7 (2017) 12293
Online since: January 2011
Authors: Rong Jun Zhao, Xian Bao Cheng, Wei Wei Shuangguan, Juan Sun, Ben Hua Fei
Calculated fir tensile strength in the saturated state is only lower than the average air-dry state of 4.1% and 5.5% lower, than the average of pine, far less than the moisture content effect of grain of the macro-tensile strength.
Fig. 2 Longitudinal tensile strength Fig. 3 Longitudinal tensile strength of of Chinese fir tracheids Masson pine tracheids Pine wood tracheid longitudinal tensile strength after heat treatment Table 2 Zero-span tensile strength of the tracheids of heat-treated Masson-Pine Treatment level 160℃(2h) 180℃(2h) 180℃(3h) 180℃(4h) 200℃(2h) 220℃(4h) Number of samples 23 24 24 24 24 14 Max /MPa 415 445 387 392 380 268 Minimum /MPa 354 364 323 330 320 217 Average/MPa 384 395 364 357 343 242 Standard deviation 16.018 26.563 18.812 15.441 13.238 17.451 Coefficient of variation/% 4.17 6.72 5.17 4.32 3.86 7.19 After heat treatment, longitudinal tensile strength of fir and pine’s earlywood has been reduced in comparison with the control samples, and pine wood decreased more significantly.
Fig. 2 Longitudinal tensile strength Fig. 3 Longitudinal tensile strength of of Chinese fir tracheids Masson pine tracheids Pine wood tracheid longitudinal tensile strength after heat treatment Table 2 Zero-span tensile strength of the tracheids of heat-treated Masson-Pine Treatment level 160℃(2h) 180℃(2h) 180℃(3h) 180℃(4h) 200℃(2h) 220℃(4h) Number of samples 23 24 24 24 24 14 Max /MPa 415 445 387 392 380 268 Minimum /MPa 354 364 323 330 320 217 Average/MPa 384 395 364 357 343 242 Standard deviation 16.018 26.563 18.812 15.441 13.238 17.451 Coefficient of variation/% 4.17 6.72 5.17 4.32 3.86 7.19 After heat treatment, longitudinal tensile strength of fir and pine’s earlywood has been reduced in comparison with the control samples, and pine wood decreased more significantly.
Online since: July 2011
Authors: Mi Mi Tian
Moreover, the kitchen should be big enough to store all kinds of food and goods including tablewares, cookers, seasonings, grains, dried food, fruits, vegetables and drinks, and they should be easy to reach.
The references are to be numbered in the order in which they are cited in the text and are to be listed at the end of the contribution under a heading References, see our example below.
The references are to be numbered in the order in which they are cited in the text and are to be listed at the end of the contribution under a heading References, see our example below.
Online since: June 2012
Authors: Fan Yang, Tong Nian Shi, Han Chu, Kun Wang
Introduction
In recent years, a large number of research results indicate that Graphics Processor Unit (GPU) has great advantage compared with the CPU in solving compute-intensive problems [1].
This mixed programming model can leverage both MPI programming and OpenMP programming: MPI for coarse-grained communication between processors or nodes, and OpenMP for inter-processor communication of a multi-processor computer.
This mixed programming model can leverage both MPI programming and OpenMP programming: MPI for coarse-grained communication between processors or nodes, and OpenMP for inter-processor communication of a multi-processor computer.
Online since: June 2011
Authors: M.S. Hossain, M.M. Rahman, M.A. Maleque
A hardness number is then calculated using the test load, the impression length, and a shape factor for the indenter type used for the test.
The metallurgical microscope is used for revealing microstructure of the materials, grain size, inclusions and surface defects.
The metallurgical microscope is used for revealing microstructure of the materials, grain size, inclusions and surface defects.
Online since: July 2012
Authors: Qing Li
The particle size and the crystalline structure of the product samples were detected by means of X-ray analysis with a BD-86 diffractometer(Japan) and Mastersizer 2000 Laser grain-size analysis meter(England).
The radius of iron is similar to titanium, Fe3+ can go into the lattice of TiO2, insteading of Ti4+, improve the number of oxygen vacancies between surface and inner of the lattice of TiO2.
The radius of iron is similar to titanium, Fe3+ can go into the lattice of TiO2, insteading of Ti4+, improve the number of oxygen vacancies between surface and inner of the lattice of TiO2.
Online since: May 2011
Authors: Xiao Ming Guan, Chang Feng Yuan, Guang Ming Yu, Qian Qian Zhao, Jing Bo Zou
Subsurface excavation damages to the surroundings in various degrees and results in many negative impacts, such as surface settlement in city, underground reservoir’s decrease,earthfall or landslide,which will inevitably lead to a large number of surface damage to buildings and facilities,constructor’s casualties and water environmen’s deterioration.The Subsurface excavation even leads to geologic hazard,( such as geodynamic release, earthquake, underground cross-off induced by urban underground empty) which will seriously affected the city’s working and sustainable development[2].
Some partial section is filled-type structural development and it will be cutting as rock base’s corase-grained granite.
Some partial section is filled-type structural development and it will be cutting as rock base’s corase-grained granite.