Feasibility study: trial application of grain boundary plane enginering to commercially pure titanium

这项可行性研究的灵感来自EPSRC资助的晶界工程网络会议上的演讲和讨论。其目的是评估商业纯钛的晶界工程（GBE）是否可行，其中GBE是指应用专门的热机械处理，以修改特定边界类型的群体，以提供更多所谓的“特殊”边界。到目前为止，GBE仅在立方材料中获得了成功，而且对六方金属中的晶界结构的研究相对较少。将探索“晶界平面工程”的新概念，即低温/长时间退火的适应性，以促进更多的“特殊”晶界平面。一种新的，先进的电子背散射衍射为基础的技术来测量所有五个晶界参数（取向差和平面）将被使用。实验工作将与美国卡内基梅隆大学合作进行，该大学开发了新技术。如果该研究表明，在钛中GBE晶界网络是可行的，那么它将随后向EPSRC提供全额拨款建议，可能与美国国家科学基金会合作，与美国的同事合作。

This feasibility study has been inspired by presentations and discussions at a conference of the EPSRC-funded Grain Boundary Engineering Network. It aims to assess if it is feasible to grain boundary engineer (GBE) commercially pure titanium, where GBE refers to the application of specialised thermomechanical processing in order to modify the population of specific boundary types to give more so-called 'special' boundaries. So far GBE has only been successful in cubic materials, and moreover there are relatively few studies in general of grain boundary structure in hexagonal metals. The new concept of 'grain boundary plane engineering will be explored, that is, the adaptation of low temperature/long duration anneals to promote more 'special' grain boundary planes. A novel, advanced electron backscatter diffraction based technique to measure all five grain boundary parameters (misorientation and plane) will be used. The experimental work will be carried out in conjunction with Carnegie Mellon University in the USA, where the new technique was developed. If the study demonstrates that it is feasible to GBE the grain boundary network in titanium, then it will be followed by a full grant proposal to EPSRC, probably joint with the National Science Foundation, in collaboration with colleagues in the USA.