Search results

Forging process work hardening and material softening coexist.
Blank materials brand 40Cr [20-900 ℃], using just (sticky) plastic flow stress model: Where: is an equivalent strain, is an equivalent strain rate, T is deformation temperature.
Material Dynamic Recrystallization Evolution Model[4].
(2) With the pressing rate increases unceasingly, dynamic recrystallization volume fraction, when the pressure under the rising rate 30%, materials department is 67% of regional heart full modification
Journal of central south university (natural science edition), 2008,39 (5) : 1005-1010.

Experimental methods Materials.
Ehrlich, Journal of Nuclear Materials, 233-237 138 (1996) [2] T.D.
Roberts, Journal of Nuclear Materials, 367-370 637 (2007) [3] D.R.
Roberts, Journal of Materials Research, 20 299 (2005) [6] M.D.
Dimiduk, Materials Science and Engineering A, 400 268 (2005)

Hexagonal system ferrite materials are widely used in ceramic permanent magnetic materials, high-frequency magnetic head materials, and high-frequency soft magnetic materials due to their excellent electromagnetic properties.
[3] Han Zhiquan: Developments of Ultrahigh Frequency Soft Hexagonal Ferrite and Composite Ferrite Materials[J], Journal of Magnetic Materials and Devices (No. 3, 2010)
[4] Tang Yingming, Jia Lijun, Zhang Huawu, Yin shuiming and Li Tao: Application and Research Status of Z-type Hexaferrites Used in UHF Band[J], Journal of Magnetic Materials and Devices (No. 6, 2010)
[5] Feng Zekun, Huang Aiping, Xu Dandan and Sheng Jinping: Ferroxplana Co2Z Hexagonal Ferrites Materials for Applications at Quasi-microwave Band[J], Journal of Magnetic Materials and Devices(No. 6, 2008)
[6] Hao Sikun, Li Wei, Meng Weimin, Bai Jianmin, Yang Zheng and Wei Fulin: Magnetic properties of Co_2Z type ferrite thin films[J], Journal of Magnetic Materials and Devices (No.3, 2011)

The micro-PECM (Pulse Electrochemical Machining) combining synchronous ultrasonic vibration is proposed as a new technology for to solve the difficulty machining problems of conductive hard and tough materials.
Generally, the mid carbon steel and the spring steel are selected as electrode materials of the micro-machining.
Beijing. 2005 [4].B.Bhattacharyya, J.Munda，Experimental Investigation into Electrochemical Micromachining (EMM) Process[J]，Journal of Materials Processing Technology，2003，140：287~291
[5].Zhao Wansheng，Wang Zhenlong．Ultrasonic and electric discharge machining to deep small hole on titanialloy[J]．Journal of Materials Processing Technology，2002，120：101~106
Selected problems of micro electrochemical machining[J], Journal of Materials Processing Technology, 2004, 149(1-3): 426-431

It shows that the increased load can be transferred to pile bottom precisely because of the continue compression of pile materials.
It shows that during the loading process before 4000KN, elastic deformation occurred mainly for pile body materials, and after 4000kn, plastic deformation occurred.
Journal of geotechnical engineering,  1997, 19(4): 88 ～ 93
Journal of Zhu-Zhou Institute of Technology, 2006, 20 (4): 86 ～ 89 [4] Lei Jin-Song.
Master degree theses of kun-Ming university of science and technology, 2002

It is suitable for semiconductor substrate materials as a replacement of Al2O3, and BeO [1-5].
In addition, aluminum nitride ceramics can also be used for infrared and radar penetrating material.
This makes it possible for people to use whiskers with excellent mechanical, thermal and other properties, to improve thermal conductivity for the existing electronic packaging materials through the material compound technology.
References [1] Li Guangyu, Li Zidong and Jin Ye. properties of whisker and its application progress, thermosetting resin,2000,15 (2): 48-51 [2] Pan Jinsheng, CHAN Wing-Wah. whisker and its application of journal of composites,1995, 12 (4): 1-7 [3] Wei ming, Wang chunbo, Ying; progress of inorganic whisker research, Salt LakeResearch,2004,12 (4): 58-62 [4] Li Qiang , Jin Zhiliang and Zhang Zhihong. application and synthesis of inorganic whisker materials, the progress of chemistry,2003, 15 (4): 264-273 [5] Yuan Jianjun. research progress of whisker, materials science and technology,1996, 14 (4): 15-21 [6] Jiecai Han, Shanyi Du.Combustion synthesis of AlN whiskers,SCI,2006,41:1697-1703 [7] Weimer A W, Cochran Ga , Eisman Ga , et al.Rapid Process for Manufacturing Alumunum Nitride Powder,Journal of the American Ceramic Society,1994,71 (1) : 3-18 [8] Slack Ga , Mcnell Y T F.Growth of High Purity AlN Crystals,[J]Crystal Growth,1976 ,34 : 263-270 [9] Kohn Ja , Cotterpg, Potter Ra.Synthesis
of Aluminum Nitride Monocrystals,American Mineralogis,1956,41 : 355-361 [10] Fu Renli, Lu Chen. research progress of aluminum nitride whiskers, progress in natural science,1998, 8 (2): 513-519

One of the new alternative material which can be used to replace cement is geopolymer materials [1,4].
Geopolymer material is an inorganic material which contains silica (SiO2) and alumina (Al2O3) as raw materials, and alkali activator.
The content of Al2O3 for both materials is 38.58 % and 0.2%.
Lukey, Materials Letters, 57(7): 1272-1280 (2003) [13] Valeria F.F.
MacKenzie , Clelio Thaumaturgo,, International Journal of Inorganic Materials 2 (2000) 309–317 [14] Ekaputri, J.

Aegerter, Tensile Testing of Metallic Materials: A Review.
Material Science Engineering (1996), Vol.
Journal of Materials Processing Technology (1997), Vol. 63, pp.358-363
Journal of Materials Processing Technology, Turkey (2005), Vol. 169, pp.292-298
Journal of Materials Processing Technology, China (2008), Vol. 197, pp.43-48.

For materials whose static strength is small or zero, e.g., sand or water, the depth of penetration is no larger than 100 times the size.
Journal of Physics and Thermophysics, 2002, V.75, #3, P. 753-770
Proceedings of USSR Academy of Sciences, Mechanics, 1987, V. 292, # 6, P.1319-1322
Engineering Physics, National Academy of Science, Belarus, Minsk, 2002, V. 75, #4
Journal of South-Ural State University, Mathematics, Physics, Chemistry Series, 2006, Is.7, P.157-163 [6] 7.

Introduction Nanophase and nanostructured materials, a new branch of materials that attracting a great deal of attention because their potential applications in areas such as electronics, optics, catalysis and nanocomposites.
Nanomaterials are classified into nanostructured materials and nanophose/nanoparticle materials.
Methodology Raw Materials.
[7] Wang,L.ZCharacterization of nanophase materials, Wiley-VCH, (200), pp.1-4,13-17,37-40
[10] Buchmeiser, R.Michael, Polymeric materials in organic synthesis and catalysis, Wiley-VCH, (2003), pp. 245-247