Characterization of inclusions and precipitates in cast stainless steel alloys

不锈钢是广泛应用于各个工业部门的高价值产品。不锈钢铸件中的非金属夹杂物会破坏铸件的完整性、强度、耐蚀性、机械性能、表面质量和疲劳寿命。这个问题在铸造行业的小截面铸件中特别值得关注。精密铸造有限公司是一家商业铸钢厂，采用先进的精密铸造技术，为各行业生产高品质的产品。在不锈钢的加工和铸造过程中，夹杂物的控制和析出相的改性是非常重要的。本研究的目的是研究液态金属加工过程中影响夹杂物形成和去除的因素，以提高产品质量，从而提高公司的竞争力。本文提出的合作项目将采用几种表征技术来研究铸造条件对夹杂物类型、大小、组成、形态和丰度的影响。研究结果有望为提高产品质量提供改进建议。该提案的长期目标是促进多伦多大学、CanmetMaterials和Precise casting Inc.的研究人员之间建立新的研究伙伴关系，为加拿大工业提供对材料制造、铸件和环境控制有良好理解的高素质人才。

Stainless steels are high value products widely used in various industrial sectors. Non-metallic inclusions in stainless steel castings can undermine the integrity, strength, corrosion resistance, machine-ability, surface quality, and fatigue life. The problem is of particular concern in the case of small section castings in the foundry industry. Precise Castings Inc. is a commercial steel foundry and employs advanced precision casting techniques in order to produce high quality products for various industries. Inclusion control and precipitated phase modification are critical considerations during the processing and casting of stainless steels. The objective of this research is to study the factors that influence inclusion formation and removal during liquid metal processing in order to improve the quality of the products, and hence increase the competitiveness of the company. The collaborative project proposed here will employ several characterization techniques to investigate the effect of casting conditions on the inclusions type, size, composition, morphology, and abundance. The results are expected to suggest improvements in the casting practice for better product quality. A longer-term objective of this proposal is to foster the development of new research partnerships between researchers at the University of Toronto, CanmetMaterials and Precise Castings Inc. and provide Canadian industries with highly qualified personnel who have a good understanding of materials manufacture, castings and environmental control.