Shuang Jiang

TL;DR: In this paper, the relationship between microstructures and hardening properties of laser powder bed fused (L-PBF) 316-L stainless steel was investigated using integrated experimental efforts and calculations, and the evolution of microstructure entities such as dislocation density, organization, cellular structure and recrystallization behaviors were characterized as a function of heat treatments.

TL;DR: In this paper, a microstructural hierarchy composed of weak texture, sub-micron cellular structures and dislocation cellular walls was promoted in the as-built sample, which provided an addition of 372 MPa in yield strength.

TL;DR: In this paper, the effect of strong constraints of the interfaces on mechanical properties of multilayers processed by multiple accumulative roll bonding (ARB) cycles has been investigated, and the results reveal that the rapid strengthening of the composites with increasing ARB cycles mainly originates from the Nb layers strengthened by dislocations, grain boundaries and heterophase interfaces.

TL;DR: In this paper, a multilayered composites were fabricated via accumulative roll bonding (ARB), where the hard Ti layers necked preferentially and then fragmented with the development of shear bands.

TL;DR: In this article, a new approach based on indentation size effect (ISE) and strengthening theories was proposed for determining the densities of geometrically necessary dislocations (GNDs) on a laser powder bed fused Hastelloy X (HX), and the results were verified by the Houghbased EBSD and modified Williamson-Hall (m-WH) methods.