纳米晶金属材料中相变与晶粒长大的共生现象

The concurrence of solid-state phase transition and grain growth is ubiquitous in thermal processing of metallic materials; understanding the concurrence is significant for manipulation of microstructure and design of structured materials with high strength and good ductility. This work will briefly review the recent progresses on the concurrence in nanocrystalline metallic materials, with particular attention to the physical origin, typical examples, underlying mechanisms, as well as microstructures, of the concurrence. On this basis, perspectives on scientific understanding of the occurrence in nanocrystalline materials are addressed.