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: $ 1.68万
• 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: 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=618423
• 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.

矿物矿石（例如煤炭，焦炭，水泥和铁石）的加工涉及粉碎大岩石，以便将它们减少到精细尺寸，以提取任何所需的矿物质。在压碎和打磨矿物质中，打磨媒体（球和棒）起着至关重要的作用。这个CRD项目的科学目标是开发抗影响 - 防杀性钢的物理冶金。该项目的技术目标是：1）通过调查合金元素的效果来设计新的撞击式钢； 2）通过研究隔离和脆性相，增强钢韧性； 3）通过研究相变和热菌株来最大程度地减少球库存中的残余应力。该提议的研究和培训项目将采用系统的冶金方法来磨削球股的关键工业问题。基于当前参与项目的成功结果，这项拟议的研究集成了PI能源材料发现研究计划的更广泛范围。该项目的结果将通过建立化学组成，过程窗口并提供当前不可用的“知道”与其业务的关系直接受益于工业合作伙伴。加拿大采矿和制造行业将受益于更好的经济学和高级研磨材料的磨损能力。这项工作的新发现，直接观察，解释和模型将加强材料工程领域。在这项研究的过程中，将对两名博士生和四名大学生进行使用，以使用最新一代的科学工具和研究方法。理论和实验发现的实际应用将在Altasteleel，Edmonton，Alberta设施和不列颠哥伦比亚省的Moly-Cop加拿大设施中实施。