Equipment for the Evaluation of Environmental Effects on Advanced Steels for Automotive and Pipeline Applications

汽车和管道应用先进钢的环境影响评估设备

• 批准号: RTI-2018-00493
• 负责人: McDermid, Joseph
• 金额: $ 10.61万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642334
• 关键词: Equipment; Evaluation; Environmental; Effects; Advanced

We are requesting several tools focussed on environmental degradation - e.g. hydrogen-induced delayed cracking (DHC) and environmentally assisted cracking - on the next generation of advanced high strength steels and press hardened steels for automotive weight reduction and safety enhancement, and the current and next generation of pipeline steels. This research will be placed within McMaster University's Centre for Automotive Materials and Corrosion (CAMC). The tools requested include a slow-strain rate tensile frame and environmental control system, an essential tool for assessing the effects of environmental exposure on the reduction of mechanical properties of advanced steels, Mg alloys and advanced Al alloys for automotive systems and for pipeline steels, particularly those destined for sour gas service. We are also requesting a hydrogen sensor for integration with a thermal desorption apparatus and hydrogen permeation apparatus which we will assemble using some existing CAMC equipment and such items as gas-tight fittings. The hydrogen sensor and thermal desorption apparatus are essential to determine the degree of hydrogen adsorption from the corrosive environments we expose our samples to and to determine the microstructural features in our alloys that absorb the hydrogen. Using this information, we can design treatments to mitigate the effect or to predict damage to the materials during service. The hydrogen sensor and permeation apparatus will be used to assess the efficacy of barrier coatings on hydrogen ingress into our materials. Finally, we are requesting two standalone potentiostats, essential tools for any electrochemical measurements, H charging of samples or plating applications. The lack of functioning potentiostats within the CAMC at this time is significantly impeding progress by our HQP, a situation which will only worsen as our research directions expand to include essential environmental exposure assessments on the next generation of automotive and pipeline materials.

我们正在申请几种专注于环境退化的工具-例如氢致延迟开裂（DHC）和环境辅助开裂-下一代先进高强度钢和压力硬化钢，用于汽车减重和安全增强，以及当前和下一代管线钢。这项研究将被放置在麦克马斯特大学的汽车材料和腐蚀中心（CAMC）。所要求的工具包括一个慢应变速率拉伸框架和环境控制系统，这是一个重要的工具，用于评估环境暴露对汽车系统和管道钢，特别是用于酸性气体服务的先进钢、镁合金和先进铝合金的机械性能降低的影响。我们还要求与热解吸装置和氢渗透装置集成的氢传感器，我们将使用一些现有的CAMC设备和气密配件等物品进行组装。氢传感器和热脱附装置对于确定样品暴露于腐蚀性环境中的氢吸附程度以及确定吸收氢的合金中的微观结构特征至关重要。利用这些信息，我们可以设计处理方法来减轻影响或预测材料在使用过程中的损坏。氢传感器和渗透装置将用于评估阻隔涂层对氢进入我们的材料的功效。最后，我们需要两台独立的恒电位仪，这是任何电化学测量、样品充氢或电镀应用的必备工具。目前，CAMC内缺乏功能正常的恒电位仪，这严重阻碍了我们HQP的进展，随着我们的研究方向扩大到包括下一代汽车和管道材料的基本环境暴露评估，这种情况只会恶化。