Assessment of local residual stress distributions at the local repair of components by means of cold gas spraying
通过冷气体喷涂评估部件局部修复时的局部残余应力分布
基本信息
- 批准号:452606919
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:
- 资助国家:德国
- 起止时间:
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Cold gas spraying is an established process for coating substrates with similar or dissimilar materials. In this process, solid material particles are accelerated onto a substrate at high velocities by means of a high pressure process gas, typically heated to a temperature in the range of 373 K up to 1200 K. The bonding of material to the substrate is achieved by interlocking solid particles to the substrate through significant plastic deformation. In addition, the particle-particle and particle-substrate surfaces are subjected to high, localised shear stress. As a result, thin oxide layers on the surface break up and the particles are bonded metallurgically to the substrate or to other particles. Due to the high process speed the heat, generated during deformation, cannot dissipate fast enough, which leads to a local temperature increase.This adiabatic shear instability further promotes the process.The method is particularly suited for repair applications, since there are neither structual changes nor oxidation occuring during the process. Cold spray coating usually induces residual compressive stresses in the coating system, which can be be advantageous for repair applications. Especially for repair applications there is no reliable literature data available as to which geometry, of the cavities to be worked out, is most suitable and to what extent the feature geometry and the location of the repair site in the component are influencing the local residual stress distribution and therefore also impact the mechanical integrity of a component. By creating a fundamental understanding with regard to coating quality, local micro structure and the formation of residual stress distributions at the repair site, this project aims at extending cold gas spraying to the repair of near-surface damaged components, made of Inconel 718. The stability of the microstructure and residual stresses in the course of thermal loading and the warping associated with relaxation of local residual stresses is a key subject of the investigation as well. These findings are important for e.g. the evaluation of the shakedown behaviour of the components during commissioning in the medium or high temperature range.For the investigations, substitute geometries are chosen, which are relevant to practice and in which the local induction of residual stresses and their change in the course of a global static or a local cyclical thermal stress can have a significant effect. A sufficiently stiff, flat plate serves as a reference condition. The evaluation of the coating quality and the stability of the generated states is carried out by means of metallographic analyses, tomographic analyses, local residual stress analyses using complementary methods and the determination of the component distortions by means of 3D coordinate measurement technology.
冷气喷涂是一种用于用相似或不同材料涂覆基材的既定工艺。在该工艺中,固体材料颗粒通过高压工艺气体以高速加速到衬底上,该高压工艺气体通常被加热到373 K至1200 K的温度。材料与基材的结合是通过显著的塑性变形使固体颗粒与基材互锁来实现的。此外,颗粒-颗粒和颗粒-基材表面经受高的局部剪切应力。结果,表面上的薄氧化物层破裂,并且颗粒与基底或其他颗粒以化学键合的方式结合。由于加工速度快,在变形过程中产生的热量不能足够快地消散,从而导致局部温度升高。这种绝热剪切不稳定性进一步促进了该过程。该方法特别适合于修复应用,因为在该过程中既没有结构变化,也没有氧化发生。冷喷涂涂层通常在涂层系统中引起残余压应力,这对于修复应用是有利的。特别是对于修复应用,没有可靠的文献数据可用于待加工的腔的几何形状最合适,以及部件中的特征几何形状和修复部位的位置在多大程度上影响局部残余应力分布,因此也影响部件的机械完整性。通过对涂层质量、局部微观结构和修复部位残余应力分布形成的基本了解,该项目旨在将冷气喷涂扩展到由Inconel 718制成的近表面受损部件的修复。在热加载过程中的微观结构和残余应力的稳定性以及与局部残余应力松弛相关的翘曲也是研究的关键课题。这些发现对于例如在中高温范围内调试期间部件的安定行为的评估是重要的。为了进行研究,选择了与实践相关的替代几何形状,其中局部诱导的残余应力及其在全局静态或局部循环热应力过程中的变化可能具有显著影响。一个足够硬的平板作为参考条件。通过金相分析、断层扫描分析、使用互补方法的局部残余应力分析以及通过3D坐标测量技术确定部件变形,对涂层质量和生成状态的稳定性进行评估。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Dr.-Ing. Jens Gibmeier其他文献
Dr.-Ing. Jens Gibmeier的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Dr.-Ing. Jens Gibmeier', 18)}}的其他基金
Minimisation corrosive attack in the conus-interface of modular endoprothesis by means of definite surface modification via warm deep rolling
通过温深滚压进行明确的表面改性,最大限度地减少模块化内置假体圆锥界面的腐蚀侵蚀
- 批准号:
382919963 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Research Grants
Neutron residual stress analysis for multiphase materials with depth gradients of the strain free / independent lattice parameter D0
具有无应变/独立晶格参数 D0 深度梯度的多相材料的中子残余应力分析
- 批准号:
282874578 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Research Grants
Hot crack assessment during welding using novel LTT weld filler materials
使用新型 LTT 焊接填充材料评估焊接过程中的热裂纹
- 批准号:
254003098 - 财政年份:2014
- 资助金额:
-- - 项目类别:
Research Grants
Thermal spraying of thick film systems - process optimization by means of residual stress and residual stress stability
厚膜系统热喷涂 - 通过残余应力和残余应力稳定性优化工艺
- 批准号:
230530734 - 财政年份:2013
- 资助金额:
-- - 项目类别:
Research Grants
Cracking resistance enhancement of high strength welded joints through the application of modern weld filler materials with low transformation temperatures (LTT)
通过应用低转变温度 (LTT) 的现代焊接填充材料增强高强度焊接接头的抗裂性
- 批准号:
188906270 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
Experimental Analysis of multiaxial residual stress states induced by laser surface hardening
激光表面硬化引起的多轴残余应力状态的实验分析
- 批准号:
206828805 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
In-situ Untersuchungen während des Schweißens mit LTT-Zusatzwerkstoffen
LTT 填充材料焊接过程中的现场调查
- 批准号:
71503100 - 财政年份:2008
- 资助金额:
-- - 项目类别:
Research Grants
Residual stresses in welded joints of work hardening steels with high manganese content
高锰加工硬化钢焊接接头的残余应力
- 批准号:
441694070 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Influence of residual stresses on the crack propagation behavior in microstructurally graded samples manufactured by laser based additive manufacturing
残余应力对激光增材制造微结构梯度样品裂纹扩展行为的影响
- 批准号:
505457585 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Reduction of the fracture risk of modular taper interfaces in orthopedic implants by enhancing their resistance towards fatigue and fretting-corrosion by the application of targeted surface modifications
通过应用有针对性的表面改性来增强其抗疲劳和微动腐蚀的能力,从而降低骨科植入物中模块化锥形接口的断裂风险
- 批准号:
525058197 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
具有粘性逆Lax-Wendroff边界处理和紧凑WENO限制器的自适应网格local discontinuous Galerkin方法
- 批准号:11872210
- 批准年份:2018
- 资助金额:63.0 万元
- 项目类别:面上项目
miRNA-140调控软骨Local RAS对骨关节炎中骨-软骨复合单元血管增生和交互作用影响的研究
- 批准号:81601936
- 批准年份:2016
- 资助金额:17.0 万元
- 项目类别:青年科学基金项目
药学统计学在中药代谢组学中生物标记物识别的研究
- 批准号:81303315
- 批准年份:2013
- 资助金额:23.0 万元
- 项目类别:青年科学基金项目
图的Ramsey理论研究中的构造性方法
- 批准号:11361008
- 批准年份:2013
- 资助金额:40.0 万元
- 项目类别:地区科学基金项目
铁磁、半金属-超导异质结中电子输运的理论研究
- 批准号:60971053
- 批准年份:2009
- 资助金额:30.0 万元
- 项目类别:面上项目
边染色图中的异色子图问题
- 批准号:10901035
- 批准年份:2009
- 资助金额:16.0 万元
- 项目类别:青年科学基金项目
新型低碳马氏体高强钢在不同低温下解理断裂物理模型的研究
- 批准号:50671047
- 批准年份:2006
- 资助金额:30.0 万元
- 项目类别:面上项目
相似海外基金
Prostate Specific Anti-androgen Therapy for Localized Prostate Cancer
前列腺特异性抗雄激素疗法治疗局限性前列腺癌
- 批准号:
10760194 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Structural Racism and Disparities in Social Risk, Human Capital, Health Care Resources, and Health Outcomes: A Multi-level Analysis of Pathways and Policy Levers for Change
结构性种族主义和社会风险、人力资本、医疗保健资源和健康结果的差异:变革路径和政策杠杆的多层次分析
- 批准号:
10654440 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Image-guided oxygen enhanced photodynamic therapy with multi-functional nanodroplets to improve head and neck cancer treatment outcomes
使用多功能纳米液滴进行图像引导氧气增强光动力疗法可改善头颈癌的治疗效果
- 批准号:
10670377 - 财政年份:2022
- 资助金额:
-- - 项目类别:
A Novel Immunologically Directed Probiotic for the Treatment of Type 1 Diabetes
一种用于治疗 1 型糖尿病的新型免疫定向益生菌
- 批准号:
10546173 - 财政年份:2022
- 资助金额:
-- - 项目类别:
A Novel Immunologically Directed Probiotic for the Treatment of Type 1 Diabetes
一种用于治疗 1 型糖尿病的新型免疫定向益生菌
- 批准号:
10653229 - 财政年份:2022
- 资助金额:
-- - 项目类别:
Malaria across borders: Measuring imported infections and contributions to local transmission in Uganda and Zimbabwe
跨境疟疾:衡量输入性感染及其对乌干达和津巴布韦当地传播的影响
- 批准号:
10280963 - 财政年份:2021
- 资助金额:
-- - 项目类别:
Non-Opioid Post-Operative Pain Management Using Bupivacaine-loaded Poly(ester urea) Mesh
使用负载布比卡因的聚(酯脲)网进行非阿片类药物术后疼痛管理
- 批准号:
10322523 - 财政年份:2021
- 资助金额:
-- - 项目类别:
Malaria across borders: Measuring imported infections and contributions to local transmission in Uganda and Zimbabwe
跨境疟疾:衡量输入性感染及其对乌干达和津巴布韦当地传播的影响
- 批准号:
10620337 - 财政年份:2021
- 资助金额:
-- - 项目类别:
Multimodal imaging of memory in epilepsy from whole brain networks to local neuronal responses: Implications for surgical decision-making
从全脑网络到局部神经元反应的癫痫记忆多模态成像:对手术决策的影响
- 批准号:
10540407 - 财政年份:2021
- 资助金额:
-- - 项目类别:
Malaria across borders: Measuring imported infections and contributions to local transmission in Uganda and Zimbabwe
跨境疟疾:衡量输入性感染及其对乌干达和津巴布韦当地传播的影响
- 批准号:
10432091 - 财政年份:2021
- 资助金额:
-- - 项目类别: