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Keynote Speakers

Prof. Changjiang Song
Shanghai University

Title: Metastable Phase high strength lightweight steels Prepared by Near Rapid Solidification

Metastable phase was usually used to enhance properties of metallic engineering material. For most metallic engineering materials, heat treating and deforming were usually carried out under the solid state conditions to obtain metastable phase and control its formation, which needed to be heated for two or even many times. Since all metallic engineering materials under solidification process during its production process, if the metastable phase can be directly obtained from liquid by control solidification process, it would improve properties and meanwhile simplify or even delete heat treating so as to save energy, reduce pollution, and enhance efficiency. This work attempted to directly produce lightweight steels with high performance by near rapid solidification technique, and study their structure evolution and mechanical properties. The experimental results showed that the mechanical properties of high strength lightweight steels prepared under near rapid solidification conditions are more than those made by traditional method (heat treating+ rolling). This results suggests that the near net shape method with near rapid solidification would have great potential applications to produce high strength lightweight steels with high performance due to its simple process.
Keywords: Advanced high strength steels, Near rapid solidification, Strip continuous casting, High Al steel, Lightweight steel

Qingli Zhang (Senior Engineer)
Ocean University of China

Title: Experimental study on cutting performance of 316L stainless steel based on micro texture tool

316L stainless steel is a common material for marine mechanical and electrical equipment. Poor cutting performance is limited to the application of 316L. The rake face of carbide tool (YW1) is micro textured to improve its machinability. And experimental study on cutting 316L stainless steel with micro texture cutting tools under dry cutting and cutting fluid lubrication. The results of the study show that under the condition of small feed and cutting fluid, the effect of vertical grooves is most obvious, which can reduce the feed resistance 9.06%, the main cutting force 22.16%, and the average friction coefficient 13.39%

青岛大学 物理科学学院