Influence of open-die forging process parameters on microstructures evolution and mechanical properties of high strength steels used for energy and transportation industries

自由锻造工艺参数对能源交通用高强度钢显微组织演变和力学性能的影响

• 批准号: 453683-2013
• 负责人: Jahazi, Mohammad
• 金额: $ 13.74万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=555081
• 关键词: Influence; open; die; forging; process

The vast majority of critical parts used in transportation, energy, and mining industries are made from high strength materials, particularly, High Strength Steels or Ultra High Strength Steels. In addition to high level of mechanical strength, these parts should possess high toughness, resilience, and resistance to fatigue in order to withstand the complex loadings applied during service. Such superior properties are attained by a judicious selection of their chemical composition and processing parameters known as thermomechanical processing. However, the interactions between alloying elements and process parameters along with multiple property requirements become very complex and often result in the presence of microscopic heterogeneities leading to increased rates of non-compliant products, longer production times and higher production costs. Over the last decade, the continued increase in the cost of raw materials, fuel cost, new environmental legislations, and fierce competition have put a significant pressure on transportation and energy industries in North America, to reduce cost by optimizing the existing materials and processes, minimize waste, and produce new and higher performance alloys. Such objectives can only be achieved if the fundamental mechanisms governing the interactions between alloying elements, process parameters and final properties are understood and methodologies developed to model and predict their impact.

运输、能源和采矿业中使用的绝大多数关键部件都是由高强度材料制成的，特别是高强度钢或超高强度钢。除了高水平的机械强度外，这些部件还应具有高韧性、弹性和抗疲劳性，以承受使用过程中施加的复杂载荷。这种上级性能是通过明智地选择它们的化学组成和称为热机械加工的加工参数来获得的。然而，合金元素和工艺参数之间的相互作用沿着多种性能要求变得非常复杂，并且经常导致微观不均匀性的存在，从而导致不符合产品的比率增加、生产时间延长和生产成本提高。在过去的十年中，原材料成本、燃料成本、新的环境法规和激烈的竞争的持续增加给北美的运输和能源行业带来了巨大的压力，通过优化现有的材料和工艺来降低成本，最大限度地减少浪费，并生产新的和更高性能的合金。只有了解控制合金元素、工艺参数和最终性能之间相互作用的基本机制，并开发建模和预测其影响的方法，才能实现这些目标。