Welding processes for iron-base ultra fine grained materials and structural components manufactured by the processes

摘要

The invention relates to structural components obtained by a process for welding iron-base materials (1,2), where the iron-base material is iron-base fine grained materials free from any amorphous phase, which comprises welding two kinds of fine grained materials of chemical and crystallographically same or different kinds from one another, whose average grain sizes d are in a range of 10 nm < d ≤ 5 x 10<3> nm, etc., by friction stir welding can maintain distinguished properties of fine grained materials, such as strength and corrosion resistance. <IMAGE>