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Experimental The test material was U70 rail steel, which was a kind of heavy rail steel and the average carbon content was 0.7%.
The hardness of ordinary polycrystalline materials was changed as grain size d changed, and it was subject to Hall-Petch law [3].
For the specimen without ultrasonic impact treatment, there exist some other traces caused by the spalling of the material in block or lamella, besides deeper and wider furrows in the wear surface.
Acknowledgements Supported by Science Foundation of Education Office of Jiangxi Province(No.2007-182) and Key Laboratory of Ministry of Education for Conveyance and Equipment, East China Jiaotong University.
References [1] Jiqiu Gong: Wheel/Rail wear (China Railway Publications, China 1987).( In Chinese) [2] Jianhui Deng, Qiyue Liu, et a1: Iron Steel Vanadium Titanium Vol. 27(2006), p. 48( In Chinese) [3] Chongyan Leng, Xu Zhang, et a1: Rare Metal Materials and Engineering Vol. 37(2008), p. 556 [4] Gaohong Li, Lajun Feng, et a1: Transactions of the China Welding Institution Vol. 29(2008), p. 51 [5] Binfeng LU, Fenggui LU, et a1: Transactions of the China Welding Institution Vol.29(2008), p.77 [6] Ning Wu, Huaming Wang, et a1: Heat Treatment of Metals Vol. 34(2009), p.46 [7] Dongpo Wang, Yin Danqing: Journal of Tianjin University Vol. 39(2006), p.757 [8] Xiaoyu Liu: China Railway science Vol. 29 (2008), p.46 ( In Chinese) [9] RAO Delin, CHEN Ligong: Transactions of the China Welding Institution Vol. 26(2005), p.48 [10] Xu L J, Xing J D: Wear Vol. 262 (2006), p. 253 [11] Wei S Z, Zhu J H, Xu L J: Materials Science and Engineering A Vol. 404 (2005), p. 138

In materials there are lots of defects.
The existence of holes results in the decease of the elastics modulus of materials, but under small strain the materials mechanical behavior remains linear.
Acknowledgements The authors are grateful for the support of National Natural Science Foundation of China under grants #90208002 and the support of the National Key Program for Developing Basic Research of China (Grant No.
The Journal of Chemical Physics, 1957, 27: 1208~1209 [2] Murray S.Daw, M.I.Baskes.
Computational Materials Science,1999, 14:80~83 [7] M.F.

.: MWST 265 430 Fatigue Characteristics of Nonferrous BoltsYour Paper's Title Starts Here: Please Center use Arial 14 Shinji HashimuraFirst Author1, a, Tetsuya ToriiSecond Author2, b,b , Yukio Miyashita3, c, Shigeru Yamanaka4, d and Genki HibiOthers3,4, ec 1Full address of first author, including countryDept. of Engineering Science and Mechanics, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, JAPAN 2Student of Advanced Engineering School, Kurume National College of Technology, 1-1-1 Komorino, Kurume, Fukuoka, 830-8555 JAPANFull address of second author, including country 3Dept. of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata, 940-2188 JAPAN 4Maruemu Works.
However the ration of the axial fatigue limits to the transverse fatigue limits were different according to the bolt materials.This document explains and demonstrates how to prepare your camera-ready manuscript for Trans Tech Publications.
Fig.5 Test bolts and test nutThese mechanical properties are not values of these raw materials.
The bolt/nut assemblies were tightened with bolts and nuts made of the same material.
Westphal, et al., Joining of Magnesium Components Using Al Fasteners, Journal of Light Metal Age (2005), pp.2-3

Interphases consist of a thin coating of one or several materials on fibers.
This process has been observed on several materials combinations [8, 9].
It measures the ability of a couple of materials to debonding.
Pagano, Journal of Composite Materials, Vol. 27 (1993) p. 540
Wagner, Composites Science and Technology, Vol. 62 (2002) p. 1957

in a special volume of the Journal of Alloys and Compounds [3].
Bartolomé) Physical and chemical properties 75 Intermetallic compounds 42 Crystal structures 60 Multifunctional Materials 23 Phase diagrams 39 Strongly correlated electron systems 69 Magnetic and transport properties 30 Magnetocalorics, thermoelectrics 58 Electronic structures 14 Molecular solids: magnetism, MOF´s, spin crossover 14 Multiferroic and magnetoelectric systems New Materials 12 Materials for energy storage, hydrogen storage 28 Synthesis and characterization 9 Topological quantum matter 13 Magnetoelastic; thermoelectric materials 8 Disordered, inhomogenous, and frustrated materials 15 Hydrides 6 Materials for high frequency applications 5 Novel superconducting materials, ruthenates, and 2 Applications pnictide oxides 14 Other topics ________________________________________________________________________________ In the meantime the European Conferences on Solid State Chemistry ECSSC became established
Both are experts in the properties of magnetic materials.
Their participants come from chemistry, physics, and materials science institutions, both, from universities and from research centers.
Chimie, Science des Materiaux (Paris) 7 (1982), 413‒604

Table 1 Processes for preparing composite materials.
Journal of the American Ceramic Society, 12(1993): 420-423
Materials, 11(2018): 2376-2388
Material Science & Engeering A, 680 (2017) 437–443
Materials and Design 94 (2016): 353-359

Cr25Ni35Nb and Cr35Ni45Nb austenitic steel are widely used as candidate materials of ethylene furnace tube due to excellent properties in terms of carburization resistance, oxidation resistance, high temperature creep and strength.
It is concluded from the Fig.4 that temperature gradient between the inner surface and outer surface of Cr25Ni35Nb and Cr35Ni45Nb steel tube without coke layer is 70℃ and 40℃，which is in line with the actual condition that Cr25Ni35Nb steel normally used in the convective coil of ethylene furnace, meanwhile Cr35Ni45Nb steel generally as the candidate materials for the radiant coil of ethylene furnace.
As a consequence, high stress initiates due to heterogeneity of material.
Acknowledgements The authors gratefully appreciate the support of National Natural Science Foundation of China (Grant No. 51305440) and the Fundamental Research Funds for the Central Universities (Grant No. 2013QNA15).
Journal of failure analysis and prevention. 9(2009) 316-322

It is a kind of method to provide prediction and decision-making basis for enterprise management work by using data and material.
In addition, the successful learning number is not identical from many individual repeated explorations materials.
Acknowledgment The paper is supported by Xi’an Technological University Principal Science Research Fund Project (XAGDXJJ0907).
References [1] Conway R, Schultz A, “The manufacturing progress function,” Journal of Industrial Engineering, vol. 10,1959, pp.39~53
[3] Muth J D, “Search theory and the manufacturing progress functions,” management Science, vol.32(8),1986,pp:948~962

Design Thinking on Urban Agricultural Construction of Intelligent Ecological Residential Building Xiaodi Li 1, a , Weiping Hu* 2, b , Xiaoping Yang 3, c 1 Faculity of Art and Communication, Kunming University of Science and Technology 2 Faculity of Art and Communication, Kunming University of Science and Technology 3 Art of design, Faculity of Art and Communication, Kunming University of Science and Technology a 57612002@qq.com , byncaid@sina.com(corresponding author) , cyang_xiaoping@yahoo.com.cn Keywords: agriculture; intelligent; residential.
Research and advocacy is also done to arouse the attention of social and civil construction developers. 3 Conception Urban agricultural residential building is based on the concept of modern intelligent ecological building and the development of science and technology, by which small-scaled family agriculture thinking is put forward to clarify its scope.
With fully use of renewable eco-friendly materials and renewable natural energy, the indoor temperature could be adjusted reasonably according to the external environment and climate change to makes life comfortable, suitable for the growth of plants, forming a cycle dependency chain of plants and animals. 4 Design of Family Agriculture Room Family agriculture room is similar to courtyard of houses on the ground and top floor, but it has the ceiling, which is the limitation of residential building. 4.1 Layout Residential agricultural rooms should be protruding from the building, so that there will be three sides to get sunshine.
In this way, sewer lines are also centralized for saving materials.
[J] Journal of Architecture, 6.2011

In order to guide students to take an active part in the activities of science and technology, the school will be equipped with college students' scientific research projects, the information science and engineering college will be equipped with college students' scientific research innovation practice projects.
Teachers will tutor the students to select a topic in June each year, students will collate materials in the summer vacation, complete the declaration fill in September, participate in declaring college students' scientific research innovation practice project in October, and conclude it in the following year.
Construct course website to provide abundant learning materials for students, construct QQ group to answer questions anytime and anywhere, Open laboratory provides students with welding, debugging field.
Professional development and reformin science education: the role of teachers' practical knowledge.
Journal of Research in Science Education, vol. 38(2001), p. 137–158