2016 Vol.36(3)

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2016, 36(3): 0-0.
[Abstract](90) [PDF 865KB](3)
A New Age of Materials Science and Engineering
Zhenye ZHAO
2016, 36(3): 1-6. doi: 10.11868/j.issn.1005-5053.2016.3.001
[Abstract](260) [FullText HTML] (59) [PDF 1408KB](4)
The "four essential factors" of materials science and engineering,including composition (component) and structure, synthesis and process, property and service behavior, were explained. The proposal of "four essential factors" ends the chaotic state of materials research and bridges the gulf between the theory and industry. Based on these, reliable materials with ultimate congenital properties are obtained, and advanced materials can be developed rapidly. Moreover, author raised the concept of "two whole processes", namely the whole process of materials development and the whole process of materials application research. The implementation of the two whole processes on a high level can ensure the acquisition of reliable and useful materials with ultimate congenital and ultimate service properties, which will lead "materials science and engineering" into a new era and enable China to be a powerful country in the field of materials.
Research and Application of New Type of High Performance Titanium Alloy
Zhishou ZHU, Xinnan WANG, Guoqiang SHANG, Yue FEI, Liwei ZHU, Mingbing LI, Jing LI, Zhe WANG
2016, 36(3): 7-12. doi: 10.11868/j.issn.1005-5053.2016.3.002
[Abstract](255) [FullText HTML] (65) [PDF 11359KB](3)
With the continuous extension of the application quantity and range for titanium alloy in the fields of national aviation, space, weaponry, marine and chemical industry, etc., even more critical requirements to the comprehensive mechanical properties, low cost and process technological properties of titanium alloy have been raised. Through the alloying based on the microstructure parameters design, and the comprehensive strengthening and toughening technologies of fine grain strengthening, phase transformation and process control of high toughening, the new type of high performance titanium alloy which has good comprehensive properties of high strength and toughness, anti-fatigue, failure resistance and anti-impact has been researched and manufactured. The new titanium alloy has extended the application quantity and application level in the high end field, realized the industrial upgrading and reforming, and met the application requirements of next generation equipment.
Aeronautical Cast Ti Alloy and Forming Technology Development
Meijuan ZHANG, Hai NAN, Zhongqiang JU, Fuhui GAO, Xiwang QIE, Langping ZHU
2016, 36(3): 13-19. doi: 10.11868/j.issn.1005-5053.2016.3.003
[Abstract](246) [FullText HTML] (49) [PDF 5747KB](5)
The application and feature of Ti alloy and TiAl alloy for aviation at home and abroad were briefly introduced. According to the patent application status in Ti alloy field, the development of Ti alloy casting technology was analyzed in the recent thirty years, especially the transformation in aviation. Along with the development of aeronautional manufacturing technology and demand of high performance aircraft, Ti alloy casting is changing towards to be large, integral and complicated, and the evolution of TiAl alloy casting increases the operating temperature of the Ti alloy casting for aviation. Moreover, the Ti alloy forming technology is no longer a single investment casting. Combining with the advantages of casting simulation technology and additive manufacturing technology, it adopts a compound way of development in order to increase its integral casting level and productive efficiency.
Experimental Technique of Titanium Fire in Aero-engine
Guangbao MI, Xu HUANG, Jingxia CAO, Chunxiao CAO
2016, 36(3): 20-26. doi: 10.11868/j.issn.1005-5053.2016.3.004
[Abstract](374) [FullText HTML] (72) [PDF 11065KB](8)
Titanium fire is the typical catastrophic fault in the aero-engine. Aiming at the urgent demand for experimental technique of titanium fire from advanced high thrust-weight ratio aero-engine, the combustion technology and theory of titanium alloy based on friction oxygen concentration method (FOC) were systematically studied. The evaluation method of fireproof property and the friction ignition model were built, and the fireproof mechanism was illustrated. By generalizing recent progress in experimental technique of titanium fire from three levels, including evolutionary rule, mechanism and prevention and control technology, the ideas and directions of experimental technique associated with the application research of titanium fire in the future were proposed, namely overall evaluation of fireproof property close to air flow environment of the aero-engine, prediction model of fireproof property and experimental verification of fireproof technique under the air flow environment of aero-engine. It is necessary to establish the prevention system of titanium fire in aero-engine, which contributes to the realization of "full titanium" in compressor and to the increase of high thrust-weight ratio.
Development of Wrought Superalloy in China
Jinhui DU, Guangpu ZHAO, Qun DENG, Xudong LÜ, Beijiang ZHANG
2016, 36(3): 27-39. doi: 10.11868/j.issn.1005-5053.2016.3.005
[Abstract](287) [FullText HTML] (77) [PDF 59510KB](14)
Wrought superalloy development in China was reviewed in recent ten years. The achievement of basic research and development of industrial manufacture technologies were systematically described from the aspects of new alloys, new technologies of hot deformation. New alloys include: new disc materials 718Plus, GH4720Li and GH4065 alloy, combustion chamber alloy GH3230, and GH4706 alloy for gas turbine engines. New technologies include: ERS-CDS new technology of easy segregation materials, multi upsetting-drawing for improving the microstructure uniformity of bars, slow cooling and multi-cycle thermomechanical treatment for increasing hot plasticity of hard-to-work alloys. Finally, the further development of wrought superalloys was prospected.
Development in Preparation and Application of Graphene Functionalization
Cheng YANG, Yubin CHEN, Junpeng TIAN, Sijia HAO
2016, 36(3): 40-56. doi: 10.11868/j.issn.1005-5053.2016.3.006
[Abstract](282) [FullText HTML] (60) [PDF 43165KB](8)
Graphene has attracted wide interest of academic and industrial circles due to its superior physical and chemical properties. The functionalization of graphene helps improve its dispersion, and adjusts its performances according to specific needs, thus enables wide applications of graphene, and becomes a hot spot of graphene related researches. This review introduced the recent advances of graphene functionalization, presents covalent and non-covalent methods of functional modification, and described applications of the modified graphene in composite materials, energy storing, optical electronics, chemical catalyzing, pollution processing, biology material and sensors. We concluded the characteristics of functionalized graphene that most of reactive groups can show their own practical properties very actively when being connected to the graphene surface. There will be two main research orientations in functionalized graphene field: one is quantifying, which is to determine and control the quantity of introduced functional species; the other is positioning that is to select the modification sites precisely and to design their fine chemical structures.
Graphene Reinforced Aluminum Matrix Nanocomposites
Shaojiu YAN, Xiang CHEN, Qihu HONG, Nan WANG, Xiuhui LI, Shuangzan ZHAO, Wenzheng NAN, Cheng YANG, Xiaoyan ZHANG, Shenglong DAI
2016, 36(3): 57-70. doi: 10.11868/j.issn.1005-5053.2016.3.007
[Abstract](381) [FullText HTML] (93) [PDF 38209KB](19)
Graphene materials with excellent mechanical and physical properties as well as two-dimensional flexible morphology are ideal reinforcement nanofillers for aluminum matrix nanocomposites. Rapid progress in graphene materials and nanocomposites fabricating technology promotes the development of advanced graphene reinforced aluminum matrix nanocomposites for structural and functional applications. Nevertheless, the dispersion of graphene nanofillers within aluminum matrix and the interfacial controlling between them remain longstanding challenges in the fabrication of graphene reinforced aluminum matrix nanocomposites. This paper focused on the recent development of the fabrication and characterization of graphene reinforced aluminum matrix nanocomposites, including the dispersion and consolidation technology of graphene reinforced aluminum matrix nanocomposites as well as their structural characters and mechanical behaviors. The mechanical performances of aluminum matrix were remarkably enhanced by the introduction of graphene, which can increase further by optimizing process parameters, improving microstructure and controlling interface between aluminum and graphene. Furthermore, in order to realize the engineering application, more investigation should be given on the corrosion, thermal and electrical properties. It is also very important to develop a new method with low cost and large-scale production. As a novel 2-dimension structure and unique surface state of graphene, the reinforcing and toughening mechanism was discussed.
Materials Genome Technology and Its Development Trend
Yongjun GUAN, Liu CHEN, Jinsan WANG
2016, 36(3): 71-78. doi: 10.11868/j.issn.1005-5053.2016.3.008
[Abstract](329) [FullText HTML] (57) [PDF 4797KB](15)
The materials genome initiative (MGI) was launched to reform the traditional modes to develop novel materials, which were expected to shorten the development cycle with simultaneous decreasing of costs. In this paper, the connotations of MGI was discussed in detail, especially from the viewpoint of requirements to aero materials. The development of MGI requires techniques aimed to high throughput computation and experiment, together with large-scale data mining based on material database. To the direction of MGI technique, we emphasize the following four aspects: material information science and database technique, integrated computation, processing simulation of materials and computational simulation of service.
Research and Application Progress of Silicone Rubber Materials in Aviation
Yanhua HUANG, Yang SHI, Lei XUE, Xinling GENG, Zhengtao SU, Jinghe WANG
2016, 36(3): 79-91. doi: 10.11868/j.issn.1005-5053.2016.3.009
[Abstract](695) [FullText HTML] (129) [PDF 948KB](16)
The research progress of heat resistance, cold resistance, electrical conductivity and damping properties of aviation silicone rubber were reviewed in this article. The heat resistance properties of silicone rubber can be enhanced by changing the molecular structure (main chain, end-group, side chain and molecular weight) of the gum and adding special heat-resistance filler. The cold resistance of aviation silicone rubber can be enhanced by adjusting the side chain molecular structure of the gum and the content of different gum chain. The electrical conductivity of silicone rubber can be improved by optimizing, blending and dispersing of conductive particles. The damping property of silicone rubber can be improved by designing and synthesizing of high-molecular polysiloxane damping agent. Furthermore, the application of aviation silicone rubber used in high-low temperature seal, electrical conduction and vibration damping technology are also summarized, and the high performance (for example long-term high temperature resistance, ultralow temperature resistance, high electromagnetic shelding, long-term fatigue resistance vibration damping, quasi constant modulus and so on) of special silicone rubber is the future direction of aviation silicone rubber.
Research and Development Progress of National Key Laboratory of Advanced Composites on Advanced Aeronautical Resin Matrix Composites
Bintai LI, Liying XING, Jianwen BAO, Xuefeng AN, Yang ZHANG, Fenghui SHI, Xueqin LI, Jian JIAO, Xiangbao CHEN
2016, 36(3): 92-100. doi: 10.11868/j.issn.1005-5053.2016.3.010
[Abstract](328) [FullText HTML] (79) [PDF 8567KB](11)
Applications and research progress in advanced aeronautical resin matrix composites by National Key Laboratory of Advanced Composites (LAC) were summarized. A novel interlaminar toughening technology employing ultra-thin TP non-woven fabric was developed in LAC, which significantly improved the compression after impact (CAI) performances of composite laminates.Newly designed multilayer sandwich stealth composite structures exhibited a good broadband radar absorbing properties at 1-18 GHz.There were remarkable developments in high toughness and high temperature resin matrix composites, covering major composite processing technologies such as prepreg-autoclave procedure, liquid composite molding and automation manufacture, etc. Finally, numerical simulation and optimization methods were deliberately utilized in the study of composites curing behavior, resin flow and curing deformation. A composite material database was also established.In conclusion, LAC has been a great support for the development of aeronautical equipment, playing such roles as innovation leading, system dominating, foundation supporting and application ensuring of aerocomposites.
Environmental Damage and Environmental Adaptability of the Aircraft in Marine Atmosphere
Chen LUO, Ming LI, Zhihua SUN, Zhihui TANG, Feng LU
2016, 36(3): 101-107. doi: 10.11868/j.issn.1005-5053.2016.3.011
[Abstract](268) [FullText HTML] (56) [PDF 8575KB](5)
Naval aircrafts are in parking condition in 90% of their life time. The most important factors that influence the environmental adaptability of naval aircrafts include marine atmospheric environment and the induced environment formed by heat and waste air from equipments. The main environmental damage of foreign naval aircrafts during service is the corrosion of structures and components, which is the most severe safety issue for aeronautical equipment. Naval aircrafts in China exhibits environmental damage related to structures, components and electronic devices. Environmental adaptability research on foreign naval aircrafts is focused on accumulation of shipborne environmental data, new testing methods for the shipborne environment, the combination of environmental testing methods and naval aircraft life time task characters, and the application of naval aircraft environmental data. Environmental adaptability research of naval aircrafts in China is mainly in three aspects: measurement and analysis of shipborne environment, the impact of shipborne environment, and environmental testing methods for simulation of shipborne environment. The future research is outlooked. It is considered that the changing rules of environmental effects of typical materials, corrosion susceptible structures, and aircraft electric products in shipborne environment should be studied. Environment factor data should be accumulated with the corresponding environment spectrum established. Laboratory testing methods and equipment simulating accelerated shipborne environment should be established for corrosion susceptible structures in order to support the environmental engineering work for naval aircraft.
Recent Process and Application of Electrochromism
Youxiu WEI, Mu CHEN, Weiming LIU, Lei LI, Guanli ZHANG, Yue YAN
2016, 36(3): 108-123. doi: 10.11868/j.issn.1005-5053.2016.3.012
[Abstract](526) [FullText HTML] (161) [PDF 14133KB](30)
Based on the research and development of electrochromism, its commercial applications have been realized in the areas of building windows, car rear-view mirrors and aircraft windows. In this paper, constructions, material category, working principles and characteristic requirements of electrochromic device were to described in details. Preparing methods of electrochromic films and technologies requirements for practicality were listed. The status of electrochromic technologies on commercialization and latest research were also summarized and analyzed. Electrochromism has great commercial potential and important social value for green and energy saving, which is the milestone in its developing process. At present, the trend of electrochromic technology is focused on seeking the technical route and process of saving time and cost, exploiting its application areas by combining other technologies and developing practical products. Wet chemical methods with industrial prospect have advantages of lowering cost and increasing efficiency, and can be a research hotspot for popularizing electrochromic technology. Moreover, the development and preparation of electrolyte layer will be the core technology in the future.
Characteristics and Preparation Technologies of Nb/Nb5Si3 Microlaminate
Rende MU, Zaoyu SHEN, Zhankao WANG
2016, 36(3): 124-131. doi: 10.11868/j.issn.1005-5053.2016.3.013
[Abstract](190) [FullText HTML] (39) [PDF 3200KB](3)
Nb/Nb5Si3 superalloy has the most potential in the application of future high temperature structures. Realization of microstructure lamination for this material is a new material design and preparation method. Characteristics and prevailing preparation technologies of Nb/Nb5Si3 microlaminate, including hot pressing, plasma spaying, magnetic sputtering and electron beam physical vapor deposition (EB-PVD) are reviewed. It is pointed out that EB-PVD is a promising technology for producing Nb/Nb5Si3 microlaminate from the engineering application point of view. Structure and function compound, nano-laminating and toughening are the developing directions in the future electron beam physical vapor deposited Nb/Nb5Si3 microlaminate field.
Effects of Ru on Microstructure and Stress Ruputure Property of Ni-based Single Crystal Superalloy DD22
Yushi LUO, Yunsong ZHAO, Shuai YANG, Jian ZHANG, Dingzhong TANG
2016, 36(3): 132-140. doi: 10.11868/j.issn.1005-5053.2016.3.014
[Abstract](240) [FullText HTML] (48) [PDF 30809KB](3)
The effects of Ru on the as-cast, heat-treated microstructures and stress rupture properties under 1100-1150 ℃ were investigated in new generation Ni-based single crystal superalloys DD22 with two levels of Ru (0% and 2%, mass fraction) additions. The results indicate that the addition of Ru results in the decrease of the solidus and liquidus temperatures, the volume fraction of (γ+γ') eutectic as well as solidification segregation. The size of γ' phase and elemental partitioning ratio of Re and Cr which are important for the precipitation of TCP phase decreases after heat treatment with Ru addition. Ru addition decreases the size of γ' phase, increases γ/γ' misfit and solution strengthening effect and inhibits the precipitation of TCP phase in the process of stress rupture loading, which finally improve the stress rupture properties of DD22 alloy significantly.

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