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Online since: November 2003
Authors: Sun Keun Hwang, Akihiko Chiba, Gil-Su Hong, Won Yong Kim, Mok Soon Kim
Journal Citation (to be inserted by the publisher)
Copyright by Trans Tech Publications
Precipitation Behavior and Mechanical Property of a Supersaturated
Co-Based Superalloy
Gil-Su Hong
1, Mok-Soon Kim
1*, Won-Yong Kim
2, Akihiko Chiba
3 and
Sun-Keun Hwang
1
1
School of Materials Science and Engineering, Inha University, Inchon 402-751, Korea,
mskim@inha.ac.kr
2
Korea Institute of Industrial Technology, Inchon 404-251, Korea
3
Department of Welfare Engineering, Iwate University, Morioka 020-8551, Japan
Keywords: Co-Based Alloys, Superalloys, Supersaturation, Precipitation, Mechanical Property,
Cold Rolling, Aging, Twinning.
Microstructure, precipitation behavior and mechanical property of the supersaturated single-phase Co-based superalloy are investigated in terms of materials processing, and aging condition.
Introduction The recent trend of reducing atmospheric pollution and less energy consumption requires advanced high temperature materials.
Therefore, to maintain a high strength without exhibiting a ductility loss, some alloys have been developed by means of a control of constituent elements and materials processing.
Deevi : Heat-Resistant Materials II (ASM International Materials Park, 1995)
Microstructure, precipitation behavior and mechanical property of the supersaturated single-phase Co-based superalloy are investigated in terms of materials processing, and aging condition.
Introduction The recent trend of reducing atmospheric pollution and less energy consumption requires advanced high temperature materials.
Therefore, to maintain a high strength without exhibiting a ductility loss, some alloys have been developed by means of a control of constituent elements and materials processing.
Deevi : Heat-Resistant Materials II (ASM International Materials Park, 1995)
Online since: September 2008
Authors: Ephrahim Garcia, Justin Manzo, Emily Leylek
The joint is a composite that
makes use of three materials: shape memory alloy (SMA) as face sheets, shape memory polymer
(SMP) for core material, and nichrome wire to provide additional heating.
Next, the structure is strategically cooled in such a way as to retain as much of the contraction as possible while the materials revert back to their cooled states.
"T th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference an Exhibit, (1998).
"Evaluating t rd on aircraft performance," AIAA-2002-1631, 43 AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, (2002).
"Comparison of Morphing Wing S th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conferenc (2004).
Next, the structure is strategically cooled in such a way as to retain as much of the contraction as possible while the materials revert back to their cooled states.
"T th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference an Exhibit, (1998).
"Evaluating t rd on aircraft performance," AIAA-2002-1631, 43 AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, (2002).
"Comparison of Morphing Wing S th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conferenc (2004).
Online since: January 2012
Authors: Hang He, Rui Wang
The Application of Parametric Design in Landmark Building Creation
Rui Wang1, a, Hang He2, b
1 Digital Architecture Simulation Technology Application Research Institute, Henan University of Technology, Zhengzhou, Henan, 450000, China
2 Kunming University of Science and Technology, Kunming, Yunnan, 650000, China
a1977wangrui@163.com, bhehang7@163.com
Keywords: Parametric Design, Landmark Building, Context.
This kind of architecture configuration should not only express culture from structure, material, space , but the integrated parameters of environmental and contextual factor should be also added to create sustainable architectures of more social significance should join the environment and context.
First, set three basic square body on the basis of functional requirement of building, material properties. (0.5 M, 1.0 M, 1.5 M),based on the building functional requirements and material properties.
In this design, designer used several extremely simple member unit to diverse a variety of architectural epidermis and structural surface, and try to more effectively show sustainable characters which reduce material waste, easy maintenance and construction cost through standard construction.
[6] Yongliang Shi, Digital : Building Initial State Facing the Future (In Chinese), Journal of Architecture, (2010.06)
This kind of architecture configuration should not only express culture from structure, material, space , but the integrated parameters of environmental and contextual factor should be also added to create sustainable architectures of more social significance should join the environment and context.
First, set three basic square body on the basis of functional requirement of building, material properties. (0.5 M, 1.0 M, 1.5 M),based on the building functional requirements and material properties.
In this design, designer used several extremely simple member unit to diverse a variety of architectural epidermis and structural surface, and try to more effectively show sustainable characters which reduce material waste, easy maintenance and construction cost through standard construction.
[6] Yongliang Shi, Digital : Building Initial State Facing the Future (In Chinese), Journal of Architecture, (2010.06)
Online since: December 2010
Authors: Xiao Hong Ma, Xin Wei Yu
Ma1, b
1Heilongjiang Institute of Science and Technology, Harbin 150027, China
axinwei-166@163.com, bmxhong-168@163.com
Keywords: 2A70 alloy; surface roughness; milling parameters; prediction model
Abstract.
Introduction 2A70 alloy is an important part materials for the aviation engine due to its light weight, high strength, good machining, good corrosion resistance, especially its strength and creep resistance to maintain lasting a long time in the high temperature.
This mode of production has lead to waste on human, material resources and financial resources and stable surface quality is hard to be obtained.
It relates with some factors such as the tool of geometric parameters and materials, work-piece material, cutting parameters, system stiffness and cutting process.
References [1] Xing Ai: The High-Speed Machining Technology (National Defense Industrial Press, Beijing 2003) [2] Bolin Zhang: The High-Speed Machining Technology and Application (Mechanical Industry Press, Beijing 2002) [3] Xinwei Yu: Coal mine machinery Vol.28 (2007) No.12, p48 [4] Xichang Liang, Xiaoguang Zheng and Guobin Xu: Chinese Journal of Mechanical Engineering Vol. 37 (2001) No.3, p109
Introduction 2A70 alloy is an important part materials for the aviation engine due to its light weight, high strength, good machining, good corrosion resistance, especially its strength and creep resistance to maintain lasting a long time in the high temperature.
This mode of production has lead to waste on human, material resources and financial resources and stable surface quality is hard to be obtained.
It relates with some factors such as the tool of geometric parameters and materials, work-piece material, cutting parameters, system stiffness and cutting process.
References [1] Xing Ai: The High-Speed Machining Technology (National Defense Industrial Press, Beijing 2003) [2] Bolin Zhang: The High-Speed Machining Technology and Application (Mechanical Industry Press, Beijing 2002) [3] Xinwei Yu: Coal mine machinery Vol.28 (2007) No.12, p48 [4] Xichang Liang, Xiaoguang Zheng and Guobin Xu: Chinese Journal of Mechanical Engineering Vol. 37 (2001) No.3, p109
Online since: November 2012
Authors: Guo Xiong Wu, Liang Zhang, Li Juan Luo
Introduction
Most of the filling materials for highway construction in Yunnan Province, southwest China, come from the in-situ excavated soft red soils.
The parameters of the materials are selected as Tab.1 Tab.1 Geotechnical parameters Materials Density(kg/m3) Elastic modulus () Poisson's ratio Cohesion() Friction angle(degree) Surface 2600 1800 0.35 — — Semi-rigid base 2500 2400 0.35 — — Soil 1850 250 0.35 40 18 Pile 2500 25000 0.2 — — In Fig.2, the surface thickness is 0.1m, the soil depth is 20m and the semi-rigid base thickness is 0.6m.
Earth Science-Journal of China University of Geosciences,1997,22(1):86-89
The parameters of the materials are selected as Tab.1 Tab.1 Geotechnical parameters Materials Density(kg/m3) Elastic modulus () Poisson's ratio Cohesion() Friction angle(degree) Surface 2600 1800 0.35 — — Semi-rigid base 2500 2400 0.35 — — Soil 1850 250 0.35 40 18 Pile 2500 25000 0.2 — — In Fig.2, the surface thickness is 0.1m, the soil depth is 20m and the semi-rigid base thickness is 0.6m.
Earth Science-Journal of China University of Geosciences,1997,22(1):86-89
Online since: February 2014
Authors: Ri Qing Chen, Chun Peng Wang, Jing Ya Nan, Tie Ling Jin, Juan Liu
Orthogonal experimental study on moulding conditions of amino moulding plastic
Juan Liu1, a, Jingya Nan1, b, Chunpeng Wang1, 2, c, Tieling Jin1, a,
Riqing Chen1, 2,d
1Institute of Chemical Industry of Forest Products, CAF;National Engineering
Lab. for Biomass Chemical Utilization; Key and Open Lab. on Forest Chemical Engineering, SFA;Key Lab.of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
2 Rsearch Institute of New Technology, Beijing 100091, China
aliujuangaofenziup@163.com, bnanjingya123@163.com,
cwangcpg@163.com, dmichaelmao77@163.com (corresponding author)
Keywords: Orthogonal experiment design, urea-formaldehyde resin, moulding temperature, pressure, pressing time
Abstract: In this paper, the moulding conditions of urea-formaldehyde resin were optimized to prepare moulding plastic with good mechanical properties using orthogonal experimental design method.
Experimental Materials.
The blending strength test was carried out using SANS CMT series microcomputer control electronic universal testing machine (Xinsansi material detection Co.
Journal of Applied Polymer Science, 77 (2000):3220-3227
Microporous and Mesoporous Materials, 184 (2014):122–126
Experimental Materials.
The blending strength test was carried out using SANS CMT series microcomputer control electronic universal testing machine (Xinsansi material detection Co.
Journal of Applied Polymer Science, 77 (2000):3220-3227
Microporous and Mesoporous Materials, 184 (2014):122–126
Online since: July 2013
Authors: Jian Xin Peng, Shui Hui Cui
By adjusting the acoustical materials on the surface of the model, three different room impulse responses with reverberation time (T30) 0.6s, 1.2s and 1.8s (Fig. 1) were obtained.
Meng found normal speaking rate of listening test materials about 245 words/minute (wps) for the foreign language teaching in listening through statistics[9].
According to hanban of the professional curriculum of Chinese language for foreign students of colleges and universities (2002), professional grade 1-4 on foreign students’ Chinese language listening requirements is the ability to understand speech, respectively 160~180wps, 180~200wps, 180~240wps, 180~280wps speech materials.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (10774048) and the General Fundamental Research Funds for the Central Universities at South China University of Technology (x2gjD2118340).
Lee, International Journal of Industrial Ergonomics, 35(2005), p. 217
Meng found normal speaking rate of listening test materials about 245 words/minute (wps) for the foreign language teaching in listening through statistics[9].
According to hanban of the professional curriculum of Chinese language for foreign students of colleges and universities (2002), professional grade 1-4 on foreign students’ Chinese language listening requirements is the ability to understand speech, respectively 160~180wps, 180~200wps, 180~240wps, 180~280wps speech materials.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (10774048) and the General Fundamental Research Funds for the Central Universities at South China University of Technology (x2gjD2118340).
Lee, International Journal of Industrial Ergonomics, 35(2005), p. 217
Online since: August 2013
Authors: Tatyana Kundozerova, Genrikch Stefanovich
The effect of resistance switching is sharp and reversible transition of material between two states with different resistance.
Resistance switching was observed in various materials; organic compounds [9], complex perovskite oxides[10], binary metal oxides [3].
In the field of flexible electronics metal oxide compounds find application as one of the promising materials for flexible ReRAM devices [11, 12].
Due to mechanical properties oxide metals become a promising material for application in flexible electronics.
IBM Journal of Research and Development Vol. 52, (2008), p. 481 - 492 [11] S.
Resistance switching was observed in various materials; organic compounds [9], complex perovskite oxides[10], binary metal oxides [3].
In the field of flexible electronics metal oxide compounds find application as one of the promising materials for flexible ReRAM devices [11, 12].
Due to mechanical properties oxide metals become a promising material for application in flexible electronics.
IBM Journal of Research and Development Vol. 52, (2008), p. 481 - 492 [11] S.
Online since: October 2010
Authors: Shao Hong Yan, Qing Mei Jia, Cao Bing
Raw materials and test methods
Raw materials, test equipments, and pharmaceuticals
The raw materials of the experiment are the galena.
Chinese Science Bulletin, 1996,41 (8):720-722 [3] CHEN Tianhu, FENG Junhui, XU Xiaochun.
JOURNAL OF NANJING AGRICULTURAL UNIVERSITY, 2000,1 (23):81-84 [5] ZHANG Sheng, LI Jianping, WANG Yurong.
Chinese Science Bulletin, 1996,41 (8):720-722 [3] CHEN Tianhu, FENG Junhui, XU Xiaochun.
JOURNAL OF NANJING AGRICULTURAL UNIVERSITY, 2000,1 (23):81-84 [5] ZHANG Sheng, LI Jianping, WANG Yurong.
Online since: January 2004
Authors: A. Ben Haj Amara, H. Ben Rhaiem, S. Naamen
BEN HAJ AMARA
LPM, Faculté Des sciences de Bizerte, Tunisia
Keywords: nacrite, 8.4Å hydrated nacrite, Caesium chloride; nacrite/CsCl/H2O complex; XRD.
The best agreement between observed and simulated �(Z) (R = 5%) is obtained by placing one Cl- ion at Z=6.7Å; one Cs+ ion at Z=8.3Å and two H2O molecules at 6.3 and 7.4Å. 1-Introduction: The relatively weak bonding between the 1:1 layers of kaolin minerals favours the formation of intercalation complexes by introduction of either organic or inorganic materials with appropriate size and polarity, in the interlayer space.
The 8.4Å hydrate nacrite and CsCl are used as the reacting materials.
We used two methods: (a) a direct method based on the comparison between the experimental and observed electronic density for the 00l reflections; (b) the second method based on the comparison between the experimental 00l reflections from calculated structural models. 2- Experimental: Materials The complex was prepared from Tunisian nacrite [14].
Journal of Applied.
The best agreement between observed and simulated �(Z) (R = 5%) is obtained by placing one Cl- ion at Z=6.7Å; one Cs+ ion at Z=8.3Å and two H2O molecules at 6.3 and 7.4Å. 1-Introduction: The relatively weak bonding between the 1:1 layers of kaolin minerals favours the formation of intercalation complexes by introduction of either organic or inorganic materials with appropriate size and polarity, in the interlayer space.
The 8.4Å hydrate nacrite and CsCl are used as the reacting materials.
We used two methods: (a) a direct method based on the comparison between the experimental and observed electronic density for the 00l reflections; (b) the second method based on the comparison between the experimental 00l reflections from calculated structural models. 2- Experimental: Materials The complex was prepared from Tunisian nacrite [14].
Journal of Applied.