首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 46 毫秒
1.
金属基复合材料理论模型研究进展   总被引:2,自引:1,他引:2  
宋桂明  周玉 《材料导报》1998,12(6):58-60
综述了金属基复合材料的弹性,弹塑性,开裂,断裂,热膨胀和制备工艺等方面的理论模型研究进展,随着理论模型研究的发展,将出现金属基复合材料的材料设施制备一体化的趋势。  相似文献   

2.
金属基复合材料的研究进展   总被引:3,自引:0,他引:3  
于琨 《材料工程》1991,(2):43-47
本文简要介绍了金属基复合材料概况及北京航空材料研究所20年来在这方面的研究情况,特别是在研制硼纤维、硼/铝及碳化硅/铝复合材料中所取得的成果。  相似文献   

3.
4.
金属基复合材料成形加工研究进展   总被引:13,自引:6,他引:13  
金属基复合材料的发展极为迅速,应用越来越广泛,但是,金属基复合材料的塑性差,成形困难,成形性能的相关研究较少,阻碍了其实际应用。为此,综述了金属基复合材料的压缩变形、热挤压变形、高温超塑性变形的实验研究现状以及金属基复合材料的成开有机理、相关有限元分析的理论研究新成果,提出了金属基复合材料产业化所面临的问题,同时展望了金属基合材料成形加工的未来发展趋势。  相似文献   

5.
铸造法制金属基复合材料研究进展   总被引:17,自引:0,他引:17  
本文综合评述了制造金属基复合材料的各种铸造方法,提出需要进一步研究润湿、凝固,界面反应等问题,并建议在我国加速开展铸造复合材料的研究。  相似文献   

6.
本文综述了金属基混杂复合材料的研究进展。着重介绍了各种金属基混杂复合材料的发展背景、组成、工艺方法和性能特点,并对其发展前景作了分析,认为纤维与颗粒混杂增强的金属基复合材料和树脂基复合材料与铝合金的超混杂复合材料是最具活力的品种。  相似文献   

7.
金属基纳米复合材料以其优异的性能和独特的组织结构受到越来越多的重视,成为了材料领域研究的热点并得到了越来越广泛的应用。对目前常见的金属基纳米复合材料按照不同标准进行了分类并介绍其分类的特点,叙述了金属基纳米材料在力学、电学、热学、光学、磁学、化学等方面的特征与优势,介绍了常用制备金属基纳米复合材料的方法,并对其应用、研究热点以及难点进行了分析,提出了未来的研究的内容与方向。  相似文献   

8.
9.
李勇  赵亚茹  李焕  周雅婷 《材料导报》2016,30(11):71-76
石墨烯由于独特的结构和优异的性能已成为金属基复合材料中最具吸引力的碳质材料增强体。综述了近年来石墨烯增强金属基复合材料的研究进展、强化机制及石墨烯表面改性进展,分析了石墨烯增强金属基复合材料研究存在的问题,并对石墨烯增强金属基复合材料的研究方向及发展趋势进行了展望。  相似文献   

10.
电化学方法制备金属基复合材料研究进展   总被引:2,自引:0,他引:2  
王周成  倪永金  唐毅 《材料导报》2006,20(7):51-53,57
金属基复合材料具有高比强度、高比模量、高硬度、耐高温等一系列优点,在现代航空、航天及武器装备等领域具有广阔的应用前景.综述了近年来电化学方法制备金属基复合材料的研究进展,具体介绍了电化学渗浸、连续分步电沉积和复合电沉积3种不同的电化学工艺过程.  相似文献   

11.
将铝金属基复合材料的保护方法分为两类:一类是施加保护涂层;另一类是通过改善复合材料的设计而使之具有本征的耐蚀性,综述了铝金属基复合材料腐蚀控制的最新进展。  相似文献   

12.
粉末冶金工艺(P/M)具有工艺灵活、可设计性强的特征,是制备高性能金属基复合材料的重要手段之一。简述了P/M法制备金属基复合材料的工艺特点及加工、成型特点,以若干较成功的应用实例为重点总结了粉末冶金金属基复合材料的性能特点,以及国内外的研究与应用现状,提出了该类材料未来的发展方向。  相似文献   

13.
铝金属基复合材料的腐蚀研究进展   总被引:3,自引:0,他引:3  
贺春林  才庆魁 《材料导报》2003,17(1):45-47,62
综述了不同增强体增强的铝金属基复合材料(Al MMCs)的腐蚀研究现状,包括腐蚀机制、腐蚀形貌、影响腐蚀的因素以及发展趋势。  相似文献   

14.
综述了国内外金属基复合材料的抗高温蠕变性能的研究进展。重点分析了蠕变理论研究中的3种理论模型的特点,指出理论研究的核心问题是位错越过第二相的机制以及门槛应力的来源。详述了目前蠕变实验研究的各种实验方法与特点。讨论了利用计算机有限元分析来进行蠕变研究的优点。针对目前我国金属基复合材料的抗高温蠕变性能的研究方法提出了一些看法和展望。  相似文献   

15.
本文综述了近几年来利用粉末制取金属基复合材料(MMC)的最新工艺方法,包括MA法、RHIP法、HEHR法、XD~(TM)法,讨论其组织与性能,同时展望了MMC在航空航天及汽车工业上的应用前景。  相似文献   

16.
Fundamental ideas of recycling of metal matrix composites are introduced. Two fundamentally different ways for separating reinforcements from the matrix metal exist. One is the mechanical method and another is the chemical method. In this report the separation of fibers in an aluminum matrix composite is demonstrated by a chemical method.  相似文献   

17.
Metal matrix composite (MMC) materials have attracted considerable attention due to their ability to offer unusual combinations of stiffness, strength to weight ratio, high temperature performance, and hardness. Extensive research work in this area has led to the development of novel in situ processing techniques that are now being used to new generation metal matrix composites that can be used in wide ranging applications in diverse fields. The development and processing of these new generation metal matrix composites are highlighted in this report.  相似文献   

18.
Future trends and recent developments of reinforcing materials and fabrication processing for advanced metal matrix composites are discussed in this paper. A national R & D project is currently underway to improve the oxidation resistance and heat resistance to 1773 K of continuous ceramics Si-Ti-C-O fibers (Tyranno fiber) and SiC(PC)) fibers (Nicalon fiber) by electron beam irradiation curing techniques. Meanwhile, over the past seven years from 1981, a large national R & D project on MMC has been performed in Japan. Overviews of both projects are reported including the major fabrication methods (squeeze casting, plasma spraying and powder metallurgy) of advanced MMCs. The status and future trends of these methods are considered.  相似文献   

19.
This paper investigates the feasibility of dry erosion by blasting alumina erodent on aluminum composite reinforced with silicon carbide particles. The erosion rate is dependent on the erodent velocity and the matrix hardness. Two different material removal mechanisms are observed due to different attack angles. Blasting between 30-60° is recommended for optimum erosion rate and surface quality. Material removal mechanisms and surface quality of blasted and ground composites are compared. Although its erosion rate is two orders of magnitude less than that for rough grinding, dry blasting is suitable as a finishing process of composites with irregular contours.  相似文献   

20.
Aluminium metal matrix composites (AlMMCs) offer several advantages relative to monolithic aluminium alloys such as high stiffness, strength, wear resistance, low thermal expansion coefficient, etc. However, despite considerable improvements in developing AlMMCs, the lack of reliable joining methods restrict their greater application. Fusion welding of AlMMCs has not proved successful because high temperature nature of the process normally causes unfavorable reactions between the reinforcement and the matrix, leading to the formation of a variety of defects. On the other hand, solid-state welding and diffusion bonding may not be suitable due to the presence of chemically stable surface layer of aluminium oxide, which, being insoluble in aluminium, inhibits metal-to-metal contact during diffusion bonding. Furthermore, diffusion bonding requires a very smooth and clean contact surface, which is difficult to obtain in industrial applications. As an alternative, transient liquid phase (TLP) diffusion bonding, which operates at a lower temperature, can be used to circumvent the problems associated with the oxide layer. The formation of liquid phase (eutectic) can assist the disruption of the oxide layer and promote metallic contact. The composite material used in the present study consisted of 6061 alloy containing 15 volume % of SiC particulates of 23 μm diameter. TLP bonding was carried out at 560 ˚C in argon atmosphere using copper as an interlayer with different pressures and holding times. TLP-bonded AlMMCs were characterized by optical and scanning electron microscopy, microhardness survey, and shear tests. The results indicated that adequate bond strength could be achieved with suitable bonding parameters such as holding time and initial pressure.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号