Advanced Surface Treatment Platforms for Superior-performance Gradient Nanostructured Steels

Addressing the needs of advanced surface treatment techniques offering the ultra high surface quality to the treated steel workpieces. Addressing the needs of the workpieces with superior mechanical performance.

• Various heterogeneous gradient nanostructured steels including gradient grain distribution from nanometers to microns and martensitic phase transformation can be fabricated by laser surface processing or ultra-precision machining.
• The surface-treated heterogeneous gradient nanostructured steels demonstrate outstanding mechanical properties such as high strength, good ductility, superior wear and fatigue resistance.
• The microstructural evolution, martensitic phase transformation, and underlying plastic deformation mechanisms of the heterogeneous gradient nanostructure have been dissected by the atomic observations and simulations.

• Significantly broaden the engineering applications of high-performance steels in various fields.
• The replacement of the low-cost and lightweight alloy elements in steels enable a cost reduction in the surface treatment techniques while enhancing the mechanical performance.
• Readily applicable to processing complex geometry workpieces by one-step in practical applications.

• Funded by 2017 and 2019 NSFC- National Natural Science Foundation of China
• 2021 IAAM Young Scientist Medal of the International Association of Advanced Materials
• In 2021, the Winning Award of the 1st China Postdoctoral Innovation & Entrepreneurship Overseas Competition

• Ultra-precision machining and surface hardening of the stainless steels towards precision instruments
• Laser processing/repairing plus precision machining of complex blades
• Surface hardening of the high-speed rail steels and automobile steels

• China Patent ZL201910715729. X