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Its material is steel C1045.
Arabian Journal for Science and Engineering, 2013(38):1201-1207 [4] JH Yoon, NK Lee, DY Yang, et al.
Treatment of contact traction at the die workpiece interface for the elastic analysis of die deformation[J].International Journal of Mechanical Sciences,1992(9): 689-702 [5] HT Yeo,Y Choi and K D Hur, et al.
Interation Journal of Advanced Manufacturing Technology, 2001(18):54-61 [6] Yang B, Zhang WG, Li SH, et al.
International Journal of Advanced Manufacturing Technology, 2006 (29):453-458

This research used easy materials that you can make a lot.
Fluid mechanical principles could be excellent learning materials for children to explore the use of teaching aids.
Materials and Methods Honduras Mahogany seeds is a single wing seeds, but you can rotate the same way as bamboo dragonfly falling. he experimental tests have found that its structure can reduce terminal velocity and increase the sowing range of features.
The model uses simple materials easy to teach children how to use it.
Dickinson, Leading-Edge Vortices Elevate Lift of Autorotating Plant Seeds, Science vol. 324, 1438, 2009

Acknowledgements This work is supported by the grants from General Planned Research Program of the National Natural Science Foundation of China (Grant No.90715003); National Natural Science Foundation of China (Grant No.10972168); Ph.D.
Preparation of giant magnetostrictive materials and devices design.
Beijing: Science press, 2003(in Chinese) [3] Zhifeng Tang, Zhanqin Xiang, FuzaiLü.
Characteristics of giant magnetostrictive materials and their engineering application [J].
Journal of Ordnance Engineering, 2007, 19:2, 63-69(in Chinese) [5] M.D.

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However, Inconel 738LC is also a well-known difficult-to-machine material via conventional CNC milling.
Additive manufacturing (AM), as a newly emerging manufacturing technology, shows unique advantages of manufacturing difficult-to-machine materials parts with complex profiles.
Experimental Procedures Experimental materials.
Acknowledgements The financial support of this study by Shenzhen Science and Technology Innovation Commission under the project numbers [Y01336107, GJHZ20180411143506667 and JCYJ20170817111811303] is gratefully acknowledged.
Havajneh, Statistical analysis of the effects of machining parameters and workpiece hardness on the surface finish of machined medium carbon steel, Journal of Materials Engineering and Performance, 10 (2001) 282-289

According to Fig.3 and Fig.4 of temperature distributions as a function of time at the inlet/outlet of the PCM heat exchanger, the initial temperatures of phase change materials in the tubes were near to 40°C since the PCM heat exchanger had stored certain thermal energy before, at that time the phase change materials in the tubes were in liquid phase.
time; When the phase change materials (CaCl2·6H2O) in the tubes discharged all the latent heat, the temperatures of phase change materials in the tubes or the air at the outlet decreased progressively with the increase of time
(2) When the cold air lower than the phase transition temperature of phase change materials in the tubes flowed through the PCM heat exchanger, the phase change materials (CaCl2·6H2O) in the tubes discharged latent heat and their temperatures decreased.
(3) Since the phase change materials (CaCl2·6H2O) in the tubes encountered the cold air and discharged the stored thermal energy, the value of air velocity influenced greatly on the rate of thermal energy discharge of the phase change materials in the tubes when the cold air at the inlet maintained stably at a certain temperature.
Since phase change materials in the tubes are inorganic salt hydrate (CaCl2·6H2O) whose phase transition temperature is room temperature, it can be used in the situations of temperature control or maintenance at the certain temperature, such as greenhouses, air conditioning etc.

Introduction During a high speed cutting, many machined materials exhibit a serrated chip which contains repeated adiabatic shear band as cutting conditions varying [1].
During a normal speed cutting, serrated chip is often found in the hard-cutting materials whose thermal characteristics is bad, such as titanium alloy, nickel alloy and high-strength alloy steels.
During a cutting process, the workpiece material often bears elastic-plastic flow at temperatures ranging from 200˚C to 1000 ˚C or the higher, strains ranging from 6 to 20 or the higher and strain rates ranging from 103s-1 to 105s-1 or the higher, so it is vital importance for FE simulation analysis to build a reasonable model of the material flow stress in view of the effect of various factors on the flow stress.
References [1] A.Molinari, C.Musquar, et al.: International Journal of Plasticity, Vol.18(2002), p. 443 [2] J.Barry, G.Byrne:Journal of Manufacturing Science and Engineering ASME, Vol.124(2002), p. 528 [3] A.J.Shih, J.Luo: Journal of Manufacturing Science and Engineering ASME,Vol.126(2004),p. 124 [4] M.Bakkal, A.J.Shih:International Journal of Machine Tools and Manufacture, Vol.44(2004),P. 915 [5] Y.C.Yen, A.Jain, T.Altan: Journal of Materials Processing Technology, Vol.146 (2004),P. 72 [6] L.C.Zhang: Journal of Materials Processing Technology, 1999Vol.88-89(1999),P. 273 [7] D.Liu:Dissertation, Beijing:Beihang university,2008, p. 87

Preface With the current development of materials science and engineering, many different cost-effective and high-quality materials have come into use in various applications.
Nowadays, the materials became multi-functional and required improvements and optimizations in their characteristics.
The development of the structure of the material, adapted to each new application needs the understanding of base matter characteristics, the changes in the microstructure and properties of the material during forming processes.
Thus, this volume of the journal “Material Science Forum” presents to readers the 1st special issue from the series “Current Advances in Materials Applications”, which contains articles covering different aspects of the research the properties of the materials and methods their applications.

(In Chinese) [2] Jie Liu,Tixiang Zhang and Liqin Yu: Journal of Henan University (Technology Natural Science Edition) Vol. 31 (2010), p. 46-50.
(In Chinese) [22] Yibin Zhou, Dongfeng Wang, Xiaochun wan,etal: Chemistry Vol.(2008) [23] Yueqiu Wang, Xin Zhang, Min Wei,etal: Journal of Molecular Science Vol. 25(2009),p. 55-59.
(In Chinese) [25] Li Luo, Songcheng Yu, Jinshui Wang,etal: Journal of Anhui Agricultural Sciences Vol. 38(2010),p.16860-16861.
(In Chinese) [28] Weirong Cai, Liang Liang, Jian Tang,etal: Journal of Anhui Agricultural Sciences Vol. 40(2012),p. 2310-2314.
(In Chinese) [31] YuBin Ji, Fang Dong.Lang Lang etal: International Journal of Molecular Sciences Vol. 13(2012),p. 17275-17289.

From the test, it shows that the lower density species of material can create a material failure during the withdrawal test.
Material failure.
International Journal of Molecular Sciences.
Journal of Wood Science, Vol.11(1987), pp53-59
Construction and Building Materials, Vol 41 (2013), pp263-269.