Abstract
The emerging gradient nanostructured metals and alloys containing spatially graded structural components with large variations in length scale and/or mechanical properties exhibit unprecedented mechanical performance. This perspective delineates the basic structural features of gradient nanostructures, i.e. structural components and spatial gradients, as well as related synthesis methods, excellent tensile properties and novel deformation mechanisms. The challenges and prospect for the development of gradient nanostructured materials in the future are also addressed.
Highlights
P ce Achieving both strong and ductile at the same time is a long-lasting pursuit for d te metallic materials
Nanoscale, which generally exhibit a good combination of strength and toughening, us an spatial gradients have been introduced into metallic materials [1]
Ip the emerging gradient nanostructure (GNS) metals and alloys have received the growing attention of the t materials community due to their unprecedented mechanical properties, such as superior strength and ductility combination, enhanced fatigue resistance compared to non-gradient counterparts [2,3,4,5,6,7,8]
Summary
P ce Achieving both strong and ductile at the same time is a long-lasting pursuit for d te metallic materials. The broad tunability of the gradient nanostructure (GNS) opens the new frontiers to the development of cr high-performance metals and alloys for more challenging applications.
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