Physical metallurgy for toughness of 1% Cr abrasion resistant steel for grinding ball stock

物理%20冶金%20for%20韧性%20of%201%%20Cr%20耐磨%20耐磨%20钢%20for%20研磨%20球%20库存

• 批准号: 477559-2014
• 负责人: Li, Leijun
• 金额: $ 4.66万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=578964
• 关键词: Physical; metallurgy; toughness; Cr; abrasion

The processing of mineral ores such as coal, coke, cement, and ironstone, involves crushing big rocks in order to reduce them to fine sizes for the extraction of any desired minerals. In crushing and grinding minerals, grinding media (balls and rods) play a critical role. The scientific objective of this CRD project is to develop the physical metallurgy for impact-abrasion resistant steels. The technical objectives of the project are: 1) To design new impact-abrasive steels by investigating the effect of alloying elements; 2) To enhance the steel toughness by investigating the segregation and brittle phases; and 3) To minimize residual stresses in the ball stock by investigating phase changes and thermal strains. This proposed research and training project will apply a systematic metallurgical approach to the critical industrial issue of spalling embrittlement in grinding ball stock. Based upon the successful outcome of a current Engage project, this proposed study integrates within the broader scope of the PI's Discovery research program on energy materials. The outcome of this project will directly benefit the industrial partners through the establishment of chemical composition, process windows, and providing the currently unavailable "know how" related to its business. Canadian mining and manufacturing industries will benefit from better economics and capabilities of advanced grinding material for wear mitigation. The field of materials engineering will be strengthened by the new findings, direct observations, interpretations, and models to come from this work. Over the course of this research, two PhD students and four undergraduates will be trained in the use of latest generation scientific tools and research methodologies. The practical application of the theoretical and experimental findings will be implemented at AltaSteel, Edmonton, Alberta facility and Moly-Cop Canada, British Columbia facility.

矿石的加工，如煤，焦炭，水泥和铁矿石，包括粉碎大岩石，以减少他们的罚款大小提取任何所需的矿物。在破碎和研磨矿物时，研磨介质（球和棒）起着至关重要的作用。该CRD项目的科学目标是发展耐冲击磨损钢的物理冶金学。该项目的技术目标是： 第一章 通过研究合金元素的作用设计新型冲击磨料钢 （二） 通过研究偏析和脆性相来提高钢的韧性; 第三章 通过研究相变和热应变来最大限度地减少球料中的残余应力。 这个拟议的研究和培训项目将采用系统的冶金方法来解决磨球材料剥落脆化的关键工业问题。基于当前Engage项目的成功结果，该拟议研究整合了PI关于能源材料的发现研究计划的更广泛范围。该项目的成果将通过建立化学成分、工艺窗口和提供目前无法获得的与其业务有关的“专有技术”，使工业合作伙伴直接受益。加拿大的采矿和制造业将受益于更好的经济效益和先进的研磨材料的能力，以减轻磨损。 材料工程领域将通过这项工作的新发现、直接观察、解释和模型得到加强。在这项研究的过程中，两名博士生和四名本科生将接受使用最新一代科学工具和研究方法的培训。理论和实验研究结果的实际应用将在埃德蒙顿的阿尔塔钢铁公司和阿尔伯塔的Moly-Cop加拿大公司以及不列颠哥伦比亚省的Moly-Cop加拿大公司实施。