Hybrid ultrafine grained materials produced by high pressure torsion extrusion

高压扭转挤压生产的混合超细晶材料

基本信息

批准号：
353142053
负责人：
Professor Dr.-Ing. Horst Hahn
金额：
--
依托单位：
Department of Materials Science and Engineering
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2017
资助国家：
德国
起止时间：
2016-12-31 至 2021-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/353142053?language=en
关键词：
Hybrid ultrafine grained materials produced

项目摘要

We propose to develop a scientific approach for the synthesis of new hybrid ultrafine-grained materials with high strength and ductility on the base of a newly developed severe plastic deformation (SPD) processing technique, referred to as High Pressure Torsion Extrusion (HPTE). Such hybrid materials are metal-based composites comprised of two or more constituents. Their properties are crucially determined by the inner architecture, achieved by HPTE processing along with concurrent nanostructuring. Architecturing means processing of gradient materials, i.e. materials with modified microstructure (and sometimes, phase composition) in particular areas of the sample, and/or introduction of structural elements (reinforcements) with specially designed shape. There is every reason to expect that these materials will possess outstanding mechanical, physical and functional properties, which is of crucial relevance for engineering applications in terms of reliability and lifetime issues. As model materials pure copper, Cu-Ag and Al alloys as well as plain carbon steel will be used to demonstrate various kinds of inner specimen architectures. The experimental work on the processing, structure and mechanical properties will be complemented by numerical simulations. Besides the measurements of mechanical properties of hybrid materials, the details of their structure will be determined by using XRD, EBSD/SEM, as well as conventional and analytic TEM. As a result of the project innovative processing techniques can be expected. Further close cooperation with universities in Melbourne (Australia, theory of nanostructured hybrid materials), Metz (France, microstructure simulations) und Donetsk (Ukraine, mechanical properties simulations) round up the proposed work.

我们建议开发一种科学方法，用于在新开发的重度塑性变形（SPD）加工技术的底部合成具有高强度和延展性的新型混合超铁粒材料，称为高压扭转（HPTE）。这种杂交材料是由两个或多个成分组成的金属复合材料。它们的属性是由内部体系结构和同时处理的纳米结构一起实现的。架构意味着处理梯度材料，即样品特定区域中具有修改的微观结构（有时是相组成）的材料，和/或引入具有特殊设计形状的结构元素（增强）。有充分的理由可以期望这些材料具有出色的机械，物理和功能性能，这对于可靠性和终生问题而言，这对于工程应用至关重要。作为模型材料，将使用纯铜，Cu-Ag和Al合金以及普通的碳钢来展示各种内部标本结构。数值模拟将补充有关处理，结构和机械性能的实验工作。除了测量混合材料的机械性能外，其结构的细节还将通过使用XRD，EBSD/SEM以及常规和分析TEM来确定。由于项目创新处理技术，因此可以预期。与墨尔本大学（澳大利亚，纳米结构的混合材料理论），梅茨（法国，微观结构模拟）和顿涅茨克（乌克兰，机械性能模拟）的进一步密切合作。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Evolution of microstructure and hardness in aluminum processed by High Pressure Torsion Extrusion

DOI：
10.1016/j.msea.2019.138074
发表时间：
2019-08-05
期刊：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
影响因子：
6.4
作者：
Omranpour, Babak;Ivanisenko, Yulia;Gubicza, Jeno
通讯作者：
Gubicza, Jeno

Modelling of High Pressure Torsion using FEM