Journal Published Online: 15 November 2018
Volume 48, Issue 4

Formation Mechanism of Residual Stress Field Induced by Surface Strengthening Process

CODEN: JTEVAB

Abstract

The formation of the residual stress field that accompanies severe plastic deformation is analyzed in view of the crystal structure evolution and mechanical response of the material. The conclusion drawn is that elastic release is the fundamental cause of the residual compressive stress field in the near-surface layer, while the residual tensile stress field in the deep region is attributed to load conservation. The elastic strain, which is embodied by the offset of a metal atom to the equilibrium position of the lattice, varies with the depth of the material owing to the differentiated effects of elastic release and load conservation.

Author Information

Lu, G. X.
Institute of Metal Research, Chinese Academy of Sciences, Superalloy Division, SHENHE, Shenyang, China
Wang, R. Z.
Beijing Institute of Aeronautical Materials, Metal Physics Laboratory, HAIDIAN, Beijing, China
Liu, J. D.
Institute of Metal Research, Chinese Academy of Sciences, Superalloy Division, SHENHE, Shenyang, China
Zhou, Y. Z.
Institute of Metal Research, Chinese Academy of Sciences, Superalloy Division, SHENHE, Shenyang, China
Pages: 10
Price: $25.00
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Details
Stock #: JTE20180393
ISSN: 0090-3973
DOI: 10.1520/JTE20180393