I/UCRC FRP: Collaborative Research / Fundamental Understanding of Localized Deformation under Severe Microstructural Gradients

项目主任推荐综合材料加入能源应用科学中心（CIMJSEA）提案#1330273,1330986本提案为位于俄亥俄州立大学和利哈伊大学的综合材料加入能源应用科学中心（CIMJSEA）寻求资金。基础研究的资金申请由NSF批准的征求授权，NSF 11-570。本次招标邀请I/ ucrc提交支持行业定义基础研究的提案。本提案中描述的研究将为具有严重晶体梯度（等轴和柱状）、成分梯度（微米到纳米）和沉淀梯度（0到80%）的现代高温合金焊缝蠕变寿命降低的原因提供基本见解。最终目标是开发测试方法，用于创建预测焊接结构蠕变响应的数字“应用程序”。预测焊缝局部变形的能力将加速高温材料的部署。成功部署将提高公用事业的能源效率，减少温室气体排放。本研究结果将为提高对相对较差的接头性能的理解提供重要的一步。这将为开发解决方案铺平道路，以便在未来的发电厂中充分利用新材料。沿途进行的研究也将提供培训工程师的机会，他们将准备好解决能源应用材料中的这些复杂问题。对成员组织的潜在好处包括部署焊接数字应用程序，能够预测局部属性作为晶体学，成分和微观结构梯度的函数。

Program Director's Recommendation Center for Integrative Materials Joining Science for Energy Applications (CIMJSEA) Proposal #1330273, 1330986 This proposal seeks funding for the Center for Integrative Materials Joining Science for Energy Applications (CIMJSEA) located at the Ohio State University, and Lehigh University. Funding Requests for Fundamental Research are authorized by an NSF approved solicitation, NSF 11-570. The solicitation invites I/UCRCs to submit proposals for support of industry-defined fundamental research. The research described in this proposal will provide fundamental insights into the causes of reduced creep life in welds of modern superalloys that have severe crystallographic gradients (equiaxed and columnar), compositional gradients (microns to nm), and precipitate (0 to 80%) gradients. The ultimate goal is to develop the testing methodology that will feed the creation of digital "apps" that predict the creep response of welded structures. The ability to predict localized deformation in welds will accelerate the deployment of high temperature materials. Successful deployment will lead to higher energy efficiency of utilities and reduction of greenhouse gas emissions. The results of this research will provide an important step to improve the understanding of the relatively poor joint properties. This will pave the way for developing solutions so that new materials can be used to their fullest capacity in future generation power plants. The research conducted along the way will also provide an opportunity to train engineers who will be prepared to address these complex problems in materials for energy applications. Potential benefits to member organizations include deployment of digital apps for welds, capable of predicting the local properties as a function of crystallographic, compositional and microstructural gradients.