Literature review on the mechanical properties of materials after surface mechanical attrition treatment (SMAT)

TY - JOUR

T1 - Literature review on the mechanical properties of materials after surface mechanical attrition treatment (SMAT)

AU - Olugbade, Temitope Olumide

AU - Lu, Jian

N1 - © 2020 Chongqing University. Production and hosting by Elsevier B.V. on behalf of KeAi.

PY - 2020

Y1 - 2020

N2 - Most of the challenges experienced by many engineering materials originate from the surface which later leads to total failure, hence affecting the resultant mechanical properties and service life. However, these challenges have been addressed thanks to the invention of a novel surface mechanical attrition treatment (SMAT) method which protects the material surface by generating a gradient-structured layer with improved strength and hardness without jeopardizing the ductility. The present work provides a comprehensive literature review on the mechanical properties of materials after SMAT including the hardness, tensile strength and elongation, and residual stress. Firstly, a brief introduction on the different forms of surface nanocrystallization is given to get a better understanding of the SMAT process and its advantages over other forms of surface treatments, and then the grain refinement mechanisms of materials by SMAT from the matrix region (base material) to the nanocrystallized layer are explained. The effects of fatigue, fracture, and wear of materials by the enhanced mechanical properties after SMAT are also discussed in detail. In addition, the various applications of SMAT ranging from automotive, photoelectric conversion, biomedical, diffusion, and 3D-printing of materials are extensively discussed. The prospects and recent research trends in terms of mechanical properties of materials affected by SMAT are then summarized.

AB - Most of the challenges experienced by many engineering materials originate from the surface which later leads to total failure, hence affecting the resultant mechanical properties and service life. However, these challenges have been addressed thanks to the invention of a novel surface mechanical attrition treatment (SMAT) method which protects the material surface by generating a gradient-structured layer with improved strength and hardness without jeopardizing the ductility. The present work provides a comprehensive literature review on the mechanical properties of materials after SMAT including the hardness, tensile strength and elongation, and residual stress. Firstly, a brief introduction on the different forms of surface nanocrystallization is given to get a better understanding of the SMAT process and its advantages over other forms of surface treatments, and then the grain refinement mechanisms of materials by SMAT from the matrix region (base material) to the nanocrystallized layer are explained. The effects of fatigue, fracture, and wear of materials by the enhanced mechanical properties after SMAT are also discussed in detail. In addition, the various applications of SMAT ranging from automotive, photoelectric conversion, biomedical, diffusion, and 3D-printing of materials are extensively discussed. The prospects and recent research trends in terms of mechanical properties of materials affected by SMAT are then summarized.

KW - Ductility

KW - Fatigue

KW - Nanostructured materials

KW - SMAT

KW - Ultra-high strength

UR - https://www.scopus.com/pages/publications/85087117946

U2 - 10.1016/j.nanoms.2020.04.002

DO - 10.1016/j.nanoms.2020.04.002

M3 - Article

SN - 2589-9651

VL - 2

SP - 3

EP - 31

JO - Nano Materials Science

JF - Nano Materials Science

IS - 1

ER -