Ruthenium-molybdenum alloy nanoflower particles having a plurality of ruthenium-molybdenum nanosheets, wherein the plurality of ruthenium-molybdenum nanosheets are in a form of a nanoflower useful for the electrochemical synthesis of ammonia; an electrode including the ruthenium-molybdenum alloy nanoflower particles; and methods of preparation and use thereof.

A preparation method for additive manufacturing titanium alloys involves coupling control is performed for the microstructure and the microvoids in the material to achieve the synchronous optimization of both. Firstly, the microvoids in the printed material are eliminated by printing and hot isostatic pressing technologies. Then, based on the critical temperature and time of grain growth and phase transformation, the microstructure is optimized by high-temperature and short-time heat treatment.

Methods for grain refinement of beryllium articles are disclosed. Grain refinement allows the beryllium article to have beneficial properties in terms of strength and durability. One method stabilizes the -phase of the beryllium that is precipitated after cycling above a temperature that is greater than or equal to the beta transus temperature.

Methods for grain refinement of beryllium articles are disclosed. Grain refinement allows the beryllium article to have beneficial properties in terms of strength and durability. One method stabilizes the -phase of the beryllium that is precipitated after cycling above a temperature that is greater than or equal to the beta transus temperature.