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

我们需要一些专注于环境退化的工具，例如氢诱导延迟开裂（DHC）和环境辅助开裂，用于下一代先进的高强度钢和冲压硬化钢，用于减轻汽车重量和提高安全性，以及当前和下一代管道钢。这项研究将在麦克马斯特大学汽车材料和腐蚀中心（CAMC）进行。所要求的工具包括慢应变速率拉伸框架和环境控制系统，这是评估环境暴露对汽车系统和管道钢（特别是用于含酸气体服务的管道钢）的高级钢、镁合金和高级铝合金机械性能降低影响的重要工具。我们还需要一个氢气传感器，用于集成热解吸装置和氢气渗透装置，我们将使用一些现有的CAMC设备和气密配件进行组装。氢传感器和热解吸装置对于确定样品所处腐蚀环境中氢的吸附程度以及确定合金中吸收氢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在使用期间对材料的损坏。氢气传感器和渗透装置将用于评估阻隔涂层对氢气进入我们材料的功效。最后，我们需要两个独立的电位器，任何电化学测量的基本工具，样品的H充电或电镀应用。目前，CAMC内缺乏功能良好的电位器严重阻碍了我们HQP的进展，随着我们的研究方向扩大到包括对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。

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.