Electron beam multi step and multi process technologies for local materials engineering of magnesium alloys for a load related modification of surface properties (EB-MeMaRa)

用于镁合金局部材料工程的电子束多步骤和多工艺技术，用于与负载相关的表面性能改性（EB-MeMaRa）

基本信息

批准号：
170232691
负责人：
Professorin Dr.-Ing. Anja Buchwalder
金额：
--
依托单位：
Institut für Werkstofftechnik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2010
资助国家：
德国
起止时间：
2009-12-31 至 2015-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/170232691?language=en
关键词：
Electron beam multi step process

项目摘要

The custom-designed protection of Mg alloys against wear and corrosion is an urgent demand to extend the application fields of these advantageous light weight construction materials. Electron beam (EB) multi-step and multi-process technologies are excellently suitable for a local materials engineering regarding the load specific modification and optimization of surface properties. These effects in their entirety are realizable only by means of EB surface technologies using flexible process steps in connection with suitable thermal cycles and conditions of vacuum.The aim of the requested research project EB-MeMaRa is the establishment of scientific fundamentals for the generation of graded surface layers on Mg materials exhibiting increased stability against corrosion and wear. Basing on the positive results of the first project period within the scope of the follow-up application the interactions between EB and material will be extensively investigated using selected combinations of substrate and additional. The effects of process parameters on structure and properties will be researched to provide fundamental contributions for the process background.The reference material is the basic alloy AZ91 and as additive materials the alloys AlSi12 and AlSi30 are used for EB alloying (EBA), the combination of AlSi30+TiC is used for EB dispersion alloying (EBDA). For both technologies the additive materials are applied as wires and/or powders being deposited by means of arc plasma spraying (APS).The main point of interest are investigations into the wear and corrosion behavior of selected defect-free alloyed layers and dispersion alloyed layers showing novel structural features (e.g. supersaturated phases, intermetallic compounds, grain size and distribution of hard particles).Compared with the previous project the extended and new available measurement methods like a self-made hydrogen measuring probe as well as a new pin-on-disc tribometer contribute to an extended investigation of the acting wear and corrosion mechanism to define and generate optimal layer configurations.A successful realization of the requested project provides a contribution for the generation of significant requirements for a comprehensive industrial application of Mg light weight construction materials.

定制设计的MG合金防止磨损和腐蚀的保护是迫切要求扩展这些有利的轻质建筑材料的应用领域。电子束（EB）多步骤和多进程技术非常适合于本地材料工程，涉及表面特性的负载特定修饰和优化。这些效果在它们的整体中只能通过EB表面技术实现，该过程使用与合适的热循环和真空条件有关的灵活过程步骤。所请求的研究项目EB-Memara的目的是建立科学基础，以在MG材料上生成分级表面层，从而提高了抗腐蚀和磨损的稳定性和磨损。基于在后续应用程序范围内的第一个项目期间的积极结果，EB与材料之间的相互作用将通过选定的底物组合和其他组合进行广泛研究。过程参数对结构和属性的影响将研究为过程背景提供基本贡献。参考材料是基本合金AZ91，作为添加材料ALSI12和ALSI30合金用于EB合金（EBA）（EBA），Alsi30+TIC的组合用于EB EBSEPERSION ALLOYENIL ALLOYENION ALLOYENGINE（EBDA）。对于这两种技术扩展和新的可用测量方法，例如自制氢测量探测器以及新的固定摩擦式摩擦仪，有助于对表演磨损和腐蚀机制进行扩展研究，以定义和生成最佳的层配置。对所需项目的成功实现提供了对全面的工业工业构造材料产生的重要需求。