Small Scale Laboratory to Large Scale Component Manufacture - Scaling of Heat Treatment Behaviour of Low Alloy Steels

从小规模实验室到大型部件制造 - 低合金钢热处理行为的缩放

• 批准号: 2261396
• 金额: --
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2261396
• 关键词: Small; Scale; Laboratory; Large; Component

This doctoral project is a collaboration between the CDT in Advanced Metallics at the University of Sheffield and Rolls Royce (Derby) in low alloy steel, aiming to bridge the gap between small scale laboratory heat treatment measurements and the conditions experienced during large scale manufacturing processes. This is a challenging step for manufacturing, as behaviour observed in laboratory specimens weighing as little as a few grams is not always directly relevant to components weighing hundreds of tonnes. Understanding how these differences arise is key to relating what can be measured accurately and routinely in a laboratory environment to the optimisation and robustness of large scale industrial processes. The major themes of this project are to;1) Establish a meso-scale measurement capability for phase changes and mechanical performance in structural, pressure vessel and high integrity bolting grades of low alloy steels,2) Explore the effect of inherent variation in the material; this could be due to compositional segregation or processing variability,3) Further refine the understanding of heat transfer during furnace heating and liquid quenching of components through defining key inputs to models and undertaking measurements of thermo-physical properties as required.

该博士项目是谢菲尔德大学先进金属学CDT与罗尔斯·罗伊斯（德比）低合金钢之间的合作，旨在弥合小规模实验室热处理测量与大规模制造过程中经历的条件之间的差距。这对于制造来说是一个具有挑战性的步骤，因为在重量仅为几克的实验室样品中观察到的行为并不总是与重达数百吨的组件直接相关。了解这些差异是如何产生的，是将实验室环境中可以准确和常规测量的内容与大规模工业过程的优化和鲁棒性联系起来的关键。该项目的主要主题是：1）建立结构、压力容器和高完整性螺栓等级低合金钢相变和机械性能的中尺度测量能力，2）探索材料固有变化的影响;这可能是由于成分分离或加工可变性，3）通过定义模型的关键输入并根据需要进行热物理性能测量，进一步完善对炉内加热和部件液体淬火期间热传递的理解。