| Recently, a joint research team from Birmingham University in the UK, Stockholm University in Sweden and Zhejiang University in China developed a new stainless steel SLM 3D printing technology with high strength and ductility, which overcomes the problem of additive manufacturing with both strength and ductility The process can be used to make heavy parts for the aerospace and automotive industries.  The new selective laser melting (SLM) technology developed by the research team enables the printing of an unprecedented shape with an extremely fast cooling rate of -1000 ° C / s to 100 million ° C / s, which produces some very desirable mechanical results 3D printing stainless steel more by car and aircraft manufacturers pro-resistant. The rapid cooling of this technology, in addition to additive manufacturing, has not yet reached the metal production process, leaving the metal in an unbalanced state, which produces submicron-sized dislocation network microstruc- tures that can result in image intensities and ductility Ideal mechanical properties. 'This work provides researchers with a completely new tool to design a new alloy system with superb mechanical properties that will help metal 3D printing into areas requiring high mechanical properties such as structural parts for the aerospace and automotive industries. Said Dr. Leifeng Liu, a researcher at AMCASH at the University of Birmingham. Liu and his team are responsible for creating a micro / nano material testing system inside the electron microscope so researchers can analyze the performance of 3D printed metal samples during mechanical testing, which, according to TSP, helps researchers understand These physical mechanisms determine the effective microstructural features of the printed metal. The research team's paper has been published in "Materials Today" magazine. Source: 天工 社 |
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