GOALI/Collaborative Research: Design and Optimization of Powder Processed Ni-Base Superalloys via Grain Boundary Engineering

GOALI/合作研究：通过晶界工程设计和优化粉末加工镍基高温合金

基本信息

批准号：
1334664
负责人：
Michael Sangid
金额：
$ 25.18万
依托单位：
Purdue University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2013
资助国家：
美国
起止时间：
2013-09-01 至 2017-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1334664&HistoricalAwards=false
关键词：
GOALI Collaborative Research Design Optimization

项目摘要

This research is about design of microstructures in superalloy structures that exhibit superior mechanical properties through grain boundary engineering. The approach of this research will be to develop and link process models, capable of producing microstructures with distinct grain boundary characteristics, with behavior models, capable of determining the fatigue life based on the microstructure. Through physics-based approaches, a process map will relate the hot deformation parameters for Nickel-based superalloys to the formation of distinct grain boundaries and microstructures. Microstructures that produce superior properties will be identified through inverse fatigue modeling and fabricated in bulk components. The validation of desired mechanical properties and mechanisms for achieving strengthening at distinct boundaries will be identified through novel in situ loading experiments coupled with strain field measurements and orientation mapping.If successful, the benefits of this research will include the design of microstructures in bulk engineering materials that exhibit superior and tailorable mechanical properties, thus producing an increase in safety, performance, and energy efficiency of components for gas turbine engine applications. More generally, the fundamental science will enable: (a) an identification of the types of microstructures that produce advances in fatigue life, (b) an understanding of the strengthening mechanisms of these distinct grain boundaries, and (c) process maps to achieve such structures. Each of the aforementioned items will enable designs of microstructures in a wide class of materials and components that exhibit superior mechanical behavior. The broader impact of this research is four-fold: (i.) a materials camp for high school science teachers, (ii.) inclusion of women and underrepresented groups, (iii.) open and wide-spread dissemination through HUB technology, and (iv.) industrial interaction including technology transfer.

这项研究是关于高温合金结构的微观结构设计，通过晶界工程表现出优异的机械性能。这项研究的方法将是开发过程模型并将其与能够产生具有独特晶界特征的微观结构的过程模型与能够根据微观结构确定疲劳寿命的行为模型联系起来。通过基于物理的方法，工艺图将镍基高温合金的热变形参数与不同晶界和微观结构的形成联系起来。产生优异性能的微观结构将通过逆疲劳建模来识别，并在散装部件中制造。将通过新颖的原位加载实验以及应变场测量和方向映射来确定所需机械性能和在不同边界实现强化的机制的验证。如果成功，这项研究的好处将包括散装工程材料中的微观结构设计具有卓越且可定制的机械性能，从而提高燃气涡轮发动机应用部件的安全性、性能和能源效率。更一般地说，基础科学将能够：（a）识别可提高疲劳寿命的微观结构类型，（b）了解这些不同晶界的强化机制，以及（c）实现这种目标的流程图结构。上述每一项都将使各种材料和组件的微观结构设计成为可能，这些材料和组件表现出优异的机械性能。这项研究的更广泛影响有四重：(i.) 为高中科学教师提供材料营，(ii.) 纳入女性和代表性不足的群体，(iii.) 通过 HUB 技术进行公开和广泛传播，以及(iv.) 产业互动，包括技术转让。

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）

Microstructure based fatigue life prediction framework for polycrystalline nickel-base superalloys with emphasis on the role played by twin boundaries in crack initiation

基于微观结构的多晶镍基高温合金疲劳寿命预测框架，重点关注孪晶界在裂纹萌生中所起的作用

DOI：
10.1016/j.actamat.2016.01.038
发表时间：
2016-04-01
期刊：
Acta Materialia
影响因子：
9.4
作者：
Saikumar R. Yeratapally;M. Glavicic;M. Hardy;M. Sangid
通讯作者：
M. Sangid

Distortion Correction Protocol for Digital Image Correlation after Scanning Electron Microscopy: Emphasis on Long Duration and Ex-Situ Experiments

扫描电子显微镜后数字图像相关的畸变校正协议：强调长时间和异位实验

DOI：
10.1007/s11340-017-0303-1
发表时间：
2017-07-13
期刊：
Experimental Mechanics
影响因子：
2.4
作者：
A. Mello;T. Book;Andrea Nicolas;S. E. Otto;Christopher J. Gilpin;M. Sangid
通讯作者：
M. Sangid

Bayesian uncertainty quantification and propagation for validation of a microstructure sensitive model for prediction of fatigue crack initiation

贝叶斯不确定性量化和传播，用于验证用于预测疲劳裂纹萌生的微观结构敏感模型

DOI：
10.1016/j.ress.2017.03.006
发表时间：
2017-08-01
期刊：
Reliab. Eng. Syst. Saf.
影响因子：
0
作者：
Saikumar R. Yeratapally;M. Glavicic;C. Argyrakis;M. Sangid
通讯作者：
M. Sangid

Fatigue strain mapping via digital image correlation for Ni-based superalloys: The role of thermal activation on cube slip

通过数字图像关联对镍基高温合金进行疲劳应变映射：热激活对立方体滑移的作用

DOI：
10.1016/j.msea.2017.04.002
发表时间：
2017-05-17
期刊：
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
影响因子：
6.4
作者：
A. Mello;Andrea Nicolas;M. Sangid
通讯作者：
M. Sangid

Digital Image Correlation of Heterogeneous Deformation in Polycrystalline Material with Electron Backscatter Diffraction

多晶材料异质变形与电子背散射衍射的数字图像关联