Investigation of the Ni-effect in Co-Re-Cr high temperature alloys

Co-Re-Cr高温合金中Ni效应的研究

• 批准号: 273571371
• 负责人: Professor Dr.-Ing. Hans Jürgen Christ
• 金额: --
• 依托单位: Institut für Werkstoffe
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/273571371?language=en
• 关键词: Investigation; Ni; effect; Co; Re

It is the objective of this research proposal to investigate the effect of nickel on microstructure, mechanical properties and oxidation behavior of Co-Re-Cr high temperature alloys. This is based on preliminary studies of the applicants showing that nickel (i) has a beneficial effect on the morphology of the sigma-phase, (ii) leads to the formation of a hcp/fcc-microstructure and (iii) assists in the formation of a protective Cr2O3-scale. These effects potentially allow to further improve the oxidation resistance and mechanical behavior of this novel class of high temperature alloys. However, the relevant mechanisms are currently unexplored. Thus, the objective here is to clarify the role of nickel with the underlying metallurgical principles in order to further advance the development of Co-Re-Cr alloys. Close cooperation between Universität Siegen and TU Braunschweig is forseen to tackle the task in its entirety.

本研究的目的是研究镍对Co-Re-Cr高温合金组织、力学性能和氧化行为的影响。这是基于申请者的初步研究表明，镍(I)对sigma相的形态有有利的影响，(Ii)导致形成hcp/fcc结构，(Iii)帮助形成保护性的Cr2O3膜。这些效应有可能进一步提高这种新型高温合金的抗氧化性和机械性能。然而，相关的机制目前还没有得到探索。因此，这里的目标是用基本的冶金原理来阐明镍的作用，以便进一步推动Co-Re-Cr合金的发展。西根大学和布伦斯韦格理工大学之间的密切合作被认为将全面解决这项任务。

项目成果

Influence of σ Phase on the Allotropic Transformation of the Matrix in Co-Re-Cr-Based Alloys with Ni Addition

• DOI: 10.3390/met8090706
• 发表时间: 2018-09-01
• 期刊: METALS
• 影响因子: 2.9
• 作者: Doerries, Kai;Mukherji, Debashis;Christ, Hans-Juergen
• 通讯作者: Christ, Hans-Juergen

Coexistence of Two Cubic-Lattice Co Matrices at High Temperatures in Co-Re-Cr-Ni Alloy Studied by Neutron Diffraction

中子衍射研究Co-Re-Cr-Ni合金中两种立方晶格Co基体在高温下的共存

• DOI: 10.1155/2018/5410871
• 发表时间: 2018
• 期刊: Advances in Materials Science and Engineering
• 作者: P. Beran;D. Mukherji;P. Strunz;R. Gilles;M. Hölzel;J. Rösler
• 通讯作者: J. Rösler

Effect of Different Cr and Ni Additions on Oxidation Behavior of Co-Re-Based Alloys

不同Cr、Ni添加量对钴铼基合金氧化行为的影响

• DOI: 10.1007/s11837-019-03868-z
• 发表时间: 2019
• 期刊: JOM
• 影响因子: 2.6
• 作者: K. Esleben;B. Gorr;H.-J. Christ;D. Mukherji;J. Rösler
• 通讯作者: J. Rösler

The effect of Ni and Si additions on the oxidation behaviour of Co-17Re-18Cr alloys

• DOI: 10.1016/j.corsci.2019.108135
• 发表时间: 2019-10-01
• 期刊: CORROSION SCIENCE
• 影响因子: 8.3
• 作者: Esleben, Katharina;Gorr, Bronislava;Roesler, Joachim
• 通讯作者: Roesler, Joachim