Micro-structuring micro-alloyed steels via non-metallic precipitate formation

通过非金属沉淀形成的微结构微合金钢

• 批准号: EP/L018632/1
• 负责人: Sridhar Seetharaman
• 金额: $ 43.64万
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FL018632%2F1
• 关键词: Micro; structuring; micro; alloyed; steels

Steel, the most used material in the world by value, is essential to virtually all industrial sectors: automotive, construction, mechanical engineering, shipbuilding, household appliance, consumer electronics, road, bridge and rail construction. Nearly 10 Mt of steel was manufactured in UK in 2012 and the UK steel industry has evolved to become one the leanest and most efficient of any manufacturing industry. The UK steel industry also has a long tradition of sustainable energy and raw-material management and minimization of carbon foot printing. The energy cost and CO2 output per ton of steel has been reduced by nearly 30% during the last two decades. There are nevertheless many opportunities for further improvement, with huge potential energy savings, but there are several key challenges that need to be overcome. Full cycle analysis studies demonstrate that further reductions in energy consumption and CO2 production of 25-30% can be made, in the current manufacturing of steel. A potential path for such savings lies in processes that allow for-hot charge after casting the product to a near-net (final) shape) directly into the rolling stage. This eliminates costly reheating before hot-rolling and it reduces the amount of rolling needed. It requires however, that the quality of the cast product is significantly better than what it is today in terms of bulk and surface properties since there is less chance to alter it after it is cast. We propose that this can be achieved by engineering the non-metallic particles, which are generally thought to be defects, such that they promote finer crystal grains in the cast metal. The research we aim to carry out provides the fundamental knowledge required to design such a process and we intend to develop in-situ characterization methods that enable scientists and engineers to study the specifics of how steel solidifies, rather then deducing what has happened from samples at room temperature.

按价值计算，钢铁是世界上使用最多的材料，对几乎所有工业部门都是必不可少的：汽车、建筑、机械工程、造船、家用电器、消费电子产品、道路、桥梁和铁路建设。2012年，英国生产了近1000万吨钢铁，英国钢铁行业已发展成为所有制造业中最精简、最高效的行业之一。英国钢铁行业在可持续能源和原材料管理以及最大限度减少碳足迹方面也有着悠久的传统。在过去的二十年里，每吨钢的能源成本和二氧化碳排放量降低了近30%。尽管如此，仍有许多进一步改进的机会，具有巨大的节能潜力，但仍有几个关键挑战需要克服。全周期分析研究表明，在目前的钢铁制造中，能源消耗和二氧化碳排放可以进一步减少25%-30%。实现这种节省的一个潜在途径在于，允许直接将产品浇注成近净(最终)形状后再进行热装的工艺。这消除了在热轧前昂贵的再加热，并减少了所需的轧制量。然而，它要求铸造产品的质量在体积和表面性能方面明显好于今天，因为在铸造后改变它的机会较小。我们提出，这可以通过设计非金属颗粒来实现，这些非金属颗粒通常被认为是缺陷，从而促进铸件中更细小的晶体。我们致力于进行的研究提供了设计这种工艺所需的基本知识，我们打算开发现场表征方法，使科学家和工程师能够研究钢如何凝固的细节，而不是从室温下的样品推断发生了什么。

项目成果

Investigating nano-precipitation in a V-containing HSLA steel using small angle neutron scattering

• DOI: 10.1016/j.actamat.2017.11.032
• 发表时间: 2018-02
• 期刊: Acta Materialia
• 影响因子: 9.4
• 作者: Yiqiang Wang;S. Clark;V. Janik;R. Heenan;D. Venero;K. Yan;D. G. McCartney;S. Sridhar;P. Lee

Nano-mechanical properties of Fe-Mn-Al-C lightweight steels.

Fe-Mn-Al-C轻质钢的纳米力学性能。

• DOI: 10.1038/s41598-018-27345-w
• 发表时间: 2018
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Rahnama A

<i>In Situ</i> Characterisation of Austenite/Ferrite Transformation Kinetics and Modelling of Interphase Precipitation Inter-Sheet Spacing in V Microalloyed HSLA Steels

V 微合金化 HSLA 钢中奥氏体/铁素体转变动力学的<i>原位</i>表征和相间析出板间距建模

• DOI: 10.4028/www.scientific.net/msf.879.356
• 发表时间: 2016
• 期刊: Materials Science Forum
• 作者: Clark S

Small-angle neutron scattering reveals the effect of Mo on interphase nano-precipitation in Ti-Mo micro-alloyed steels

• DOI: 10.1016/j.scriptamat.2019.08.016
• 发表时间: 2020-01-01
• 期刊: SCRIPTA MATERIALIA
• 影响因子: 6
• 作者: Wang, Y. Q.;Clark, S. J.;Lee, P. D.
• 通讯作者: Lee, P. D.

A phase-field model investigating the role of elastic strain energy during the growth of closely spaced neighbouring interphase precipitates

研究弹性应变能在紧密相邻的相间析出物生长过程中的作用的相场模型

• DOI: 10.1016/j.commatsci.2017.09.053
• 发表时间: 2018
• 期刊: Computational Materials Science
• 影响因子: 3.3
• 作者: Rahnama A