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Online since: March 2015
Authors: Liang Zuo, Fu Xiao Yu, Da Zhi Zhao, Ke Hu, Fang Liu
Influence of solution treatment on the microstructure and mechanical properties of an deformed Al-12.7Si-0.7Mg alloy Liu Fang1,a, Yu Fuxiao1,b, Hu Ke1,c, Zhao Dazhi1,d, Zuo Liang2,e 1School of Materials and Metallurgy, Northeastern University, People’s Republic of China 2Key Lab for Anisotropy and Texture of Materials (Ministry of Education) ,Northeastern University, People’s Republic of China aliufang@smm.neu.edu.cn, bfxyu@mail.neu.edu.cn, chukee12345@126.com, dzhaodz@smm.neu.edu.cn, elzuo@mail.neu.edu.cn Keywords: Deformed Al-Si alloy; solution treatment; Microstructure; mechanical properties Abstract: Deformed Al-12.7Si-0.7Mg alloy was heat treated for different solution treatment.
The results show that a short solution treatment time of 30 min is enough to achieve a high and homogenous Mg2Si concentration for a material with a fine microstructure.
Acknowledgements This work was supported by the National Natural Science Foundation of China under grants No. 51401047 and by the Fundamental Research Funds for the Central Universities No.
Journal of Light Metals, 2002, 2: 263-269
[12] Chunsheng Li, Debin Huang, Metallic Materials Handbook, Chemical Industry Press, Beijing, China, 2005, 829.
Online since: December 2013
Authors: Wei Dong Wang, Xiao Yang, Jing Wen, Meng Hui Lu, Chen Gao, Kuan Zhang, Jian Jian Wang, Yue Ding
Conventional drying usually involves the use of hot air combustion gases, or super heated steam, which heats the materials by convection and conduction[2].
In this process, microwave penetrates inside the material and heats materials with high dielectric constants[3].
Materials and methods Xilingol lignite was used in experiments (Table 1) and all samples were crushed and sieved to 5 size fractions (-0.3, 0.3-0.6, 0.6-1, 1-3, and 3-6mm).
Journal of Environmental Sciences, 2009. 21, Supplement 1(0): p.
Online since: August 2013
Authors: Zhen Lu, Xi De Lai, Xiao Ming Chen, Wei Song, Xiang Zhang
The ESO process begins with a full design domain and the parameter rejection ratio (RR), evolutionary rate (ER) was used to control the deletion of the materials.
In addition, the inefficient materials in the optimized design domain are only allowed to be removed through deleting criterion but not allowed to be added at the same time.
The mechanical properties of the material are assumed to be E=210Gpa, and ν=0.3.
Therefore, the material of pier gets the maximum use.
Chang: Journal of Tongji University(Natural Science).
Online since: September 2014
Authors: David Lee Butler
Even edges at the same level do not necessarily cut if preceding edges have already removed the material.
Experimental Approach The workpiece material was selected to be Inconel 600 series nickel-based alloy.
The material cannot be used directly on the grinding wheel as separation after curing usually results in the destruction of the wheel.
The peak-to-valley parameter S10z does not vary much and in-fact initially increases suggesting that base material is removed and thus exposing the grains more.
Stout , The characterisation of grinding wheels using 3D surface measurement techniques, Journal of Materials Processing Technology, Volume 127, Issue 2, Pages 234-237 (2002) [11] T.A.
Online since: September 2013
Authors: Hong Bo Han, Chun Hai Liu, De Jun Lan, Shu Quan Wan, Hai Jun Hou
The phase change study of high titanium slag during heat treatment Shuquan Wan1,a, Chunhai Liu2, Dejun Lan1, Hongbo Han1, Haijun Hou3 1College of Biology & Chemical Engineering, Panzhihua University, Panzhihua 617000, China 2Material Corrosion and Protection Key Laboratory of Sichuan Province, College of Materials and Chemistry Engineering, Sichuan University of Science and Engineering, Zigong, 643000,  China 3School of Mterials Engineering, Yanchen Institute of Technology, Yancheng 224051, China awsqpzhu@gmail.com Keywords:  high titanium slag, phase change, X-ray diffraction, heat treatment Abstract.
Introduction High titanium slag is one of the most important raw materials of titanium dioxide.
Thus, through the heat treatment at 1073K, the complex solid solutions of high titanium slag with capricious properties can be mostly changed into rutile, which is a material with stability properties, high hardness and large density.
Cheng, et al: Journal of Functional Materials.
Online since: October 2014
Authors: Gheorghe Nagîț, Oana Dodun, Ștefan Mihalache, Dan Chiorescu
Material and Method The paper deals with the influence of the cartesian and the cylindrical systems in the cylindrical drawing.
The material used in the simulation of the deep drawing of cylindrical cups is stainless steel AISI 304, corresponding to the Romanian standard 5NiCr180.
The material used in the simulation of the cylindrical cups deep drawing process is in the shape of a 2 mm thick sheet.
The mechanical features of the AISI304 material, used in the simulation, are presented in (Table 1).
Shahani, Effect of sheet anisotropy on the wear in deep-drawing process of a cylindrical cup, International Journal of Mechanical Sciences. 51 (2009) 856 – 868.
Online since: January 2012
Authors: Wei Shi, Yuan Hao Jiang, Jin Han, Yong Bin Li
The drawing test for geogrid in fly ash The test principle and scheme.Drawing test is used to determine the interaction characteristic between the reinforcement material and filler soil, mainly through give a drawing force to reinforcement material embedded in filler soil, and to pull it out or make it loose, the principle is shown in fig.1 in order to study the changes in water content of fly ash on geogrid drawing effect, the article undertook three kind of different moisture content , two different pressure pull out test, specific test condition is shown in table 1, using watering can sprinkling and stirring to keep the wet soil moisture uniformity.
(a) (b) Fig. 2 The converted drawing experimental device Fig. 3 Sample unit plans Test material.The geogrid material used in this experiment is one-way geogrid EG90R provided by New Grids Limited,it's performance indicators shown in Table 2.In order to keep interface friction of geogrid in the area of fly ash in the same throughout the experiment.Experiment with the length of the geogrid is 80cm with one 50cm buried in the soil.Ensure that there is a complete longitudinal ribs and two transverse ribs in the chamber, and the remaining 30cm is to install and set aside out of the slot.In order to eliminate the effect of sidewall friction boundary,the test uses six longitudinal ribs of the geogrid sample.
physical properties index of fly ash proportion liquid limit (WL) plastic limit (WP) plasticity index (IP) particle composition fine sand 0.25-0.075 mm powder 0.075-0.005mm clay <0.005mm 2.19 38 28 6.9 5.3 70.2 23.5 Test procedure.(1)Anchor chamber with rebar.(2)Proof pressure of hydraulic jacks.(3)Mix fly ash of different moisture content.(4)Put fly ash into the chamber,adding geogrid,hierarchical compaction.(5)Moved sample to the shelf of stretching machine ,start the computer, drawing machine system,adjust the distance between fixture and geogrid,clamp the sample by fixture,computer readings (displacement, pressure) back to zero,set the drawing speed parameters 1mm/min,uniform drawing geogrid,peak pull-out occurs,end the experiment.(6)Shed normal pressure and pulling force,remove the cover plate,plane to the surface filling, take the soil samples near the grill by cutting ring, determine the physical and mechanical experimental data of fly ash.(7)Replace the size of reinforced materials
Acknowledgements This study is part of the research project “Creep Behavior of Geogrid-Reinforced Fly Ash Retaining Wall under Long-Term Load” financially supported by the Natural Science Fund of Shandong Province (project No.
[2] Jie Zhao .Application of Reinforced Earth in the Side Roadbed Protection of the Jacking Bridge[J],.Journal of Liaoning Provincial College of Communications.2009.In Chinese
Online since: October 2011
Authors: Qing Ming Zhang, Xue Liu, Yuan Hang He, Zhe Zhai
Characteristics of Shock Initiation of Single-shell and Double-shell Casing Charges Xue Liu1,a, Qingming Zhang2,b, Yuanhang He3,c and Zhe Zhai4,d State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology, Beijing, China qmzhang@bit.edu.cn Keywords: shock initiation; hypervelocity impact; double-shell casing; characteristic of shock initiation Abstract.
Material models.
Hydrodynamic tensile failure model was used to describe the spalling and cavitation of projectile and casing material.
Table 1 Materials and Computing Model Materials Models Arithmetic EOS Strength Model Failure Model Projectile/1006 Steel SPH Shock Johnson Cook Hydro Tensile Casing/7075T6 AL SPH Tillotson Steingerg Guinan Hydro Tensile Explosive Lagrange Lee-Tarver(JWL) Von Mises None Parameter of models.
Allahdadi, "High Strain Lagrangian Hydrodynamics: A Three-Dimensional SPH Code for Dynamic Material Response," Journal of Computational Physics, vol. 109, pp. 67-75, 1993
Online since: March 2017
Authors: Andreas Öchsner, Markus Merkel, Leonhard Hitzler, Johann Hirsch
On a side note, the inclination angle during manufacture affects not only the surface quality, it has also an immense influence on the tensile strength and a measurable impact on the fracture toughness of the material [11-13].
The fabrication of downwards orientated faces without support structure underneath was found to be more complex with 316L (1.4404), as it has been the case in previous studies with AlSi10Mg raw material [4,11].
Journal of Advanced Mechanical Design, Systems, and Manufacturing 8 (2014) JAMDSM0009
Van Humbeeck (2010) Part and material properties in selective laser melting of metals.
In: Machining, Joining and Modifications of Advanced Materials.
Online since: August 2016
Authors: Keila Christina Kleinjohann, Bruno Borges Ramos, Euclides Alexandre Bernardelli, Ana Maria Maliska
For these surfaces, micro-topography have presented the best tribological results when compared to materials with unusual finishes. [3] The techniques most currently studied for patterning of surfaces are laser technology and photolithography.
This expansion competes with ion and fast neutrals bombardment that cause depression due to the extraction of material.
Figueroa: Journal of Applied Physics Vol. 105 (12) (2009), p. 124914
Belmonte: Materials Science and Engineering Vol. 5 (2009), p. 012012
Lichtenberg: Principles of Plasma Discharges and Materials Processing.
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