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Processing and materials characterisation of novel NiNbSn metallic glass reinforced metal matrix composites

新型 NiNbSn 金属玻璃增强金属基复合材料的加工和材料表征

基本信息

批准号：
225918708
负责人：
Professor Dr.-Ing. Kay A. Weidenmann
金额：
--
依托单位：
Institut für Angewandte Materialien - Werkstoffkunde (IAM-WK)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/225918708?language=en
关键词：
Processing materials characterisation novel NiNbSn

项目摘要

Recent studies by several researchers have shown the potential of metallic glasses (MG) as reinforcement phase in metal matrix composites (MMC). Successful incorporation of the MG reinforcement in the MMC is however limited as the processing temperature must be less than the crystallization temperature of the glass. Recently developed Ni-based MG Ni60Nb35Sn5 displays a relatively high crystallization temperature of 943 K along with excellent glass forming ability and extremely high hardness and strength. This crystallization temperature is significantly higher than the liquidus temperature of eutectic Al alloy AlSi12, hence making it possible to fabricate MMCs by melt infiltration in MG ribbons featuring different architectures. This MG displays significantly improved strength, hardness and extended elastic limit at a density comparable to steel reinforcement. To the best of our knowledge, no data exist about processing and mechanical properties of continuously reinforced MMCs of this kind, although the mechanical properties should be of technical interest. In the proposed project, MMCs will be processed with various architectures. Based on a variation of processing parameters and reinforcement structure, thorough mechanical and microstructural analyses to explore the relation between processing, microstructure and mechanical performance will be carried out. These include 2D and 3D structural analysis, elastic analysis, mechanical tests for flow behavior and damage analysis, thermal behavior, diffraction measurement of residual stress in the matrix phase and internal load transfer mechanism. Mechanical tests in situ with microstructural analysis will help clarifying the damage behaviour. This way, thorough understanding of the processing-structure-(thermo)-mechanical correlation in this composite material will be obtained.

近年来的研究表明，金属玻璃（MG）作为金属基复合材料（MMC）的增强相具有很大的潜力。然而，在MMC中成功掺入MG增强材料是有限的，因为加工温度必须低于玻璃的结晶温度。最近开发的Ni基MG Ni 60 Nb 35 Sn 5显示出相对较高的晶化温度（沿着），具有优异的玻璃形成能力和极高的硬度和强度。该结晶温度显著高于共晶Al合金AlSi 12的液相线温度，因此使得可以通过在具有不同结构的MG带中的熔体渗透来制造MMCs。这种MG在与钢筋相当的密度下显示出显著改善的强度、硬度和扩展的弹性极限。据我们所知，没有关于这种连续增强的MMC的加工和机械性能的数据，尽管机械性能应该是技术上感兴趣的。在拟议的项目中，MMC将采用各种架构进行处理。基于工艺参数和增强结构的变化，将进行彻底的力学和微观结构分析，以探索工艺、微观结构和力学性能之间的关系。这些包括2D和3D结构分析、弹性分析、用于流动行为和损伤分析的机械测试、热行为、基质相中残余应力的衍射测量和内部载荷传递机制。现场力学试验和微观结构分析将有助于阐明损伤行为。通过这种方式，将获得对该复合材料中的加工-结构-（热）-机械相关性的透彻理解。