The main factor influencing the tensile properties of surface nano-crystallized graded materials

Jianjun Li; Shaohua Chen; Xiaolei Wu; Aikah Soh; Jian Lu

doi:10.1016/j.msea.2010.07.064

Author(s)

Jianjun Li
Shaohua Chen
Xiaolei Wu
Aikah Soh
Jian Lu

Detail(s)

Original language	English
Pages (from-to)	7040-7044
Journal / Publication	Materials Science and Engineering A
Volume	527
Issue number	26
Publication status	Published - Oct 2010
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.msea.2010.07.064 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-77956440182&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b0d4051f-58fc-4abb-8b56-ba443b399b54).html

Abstract

The improved mechanical properties of surface nano-crystallized graded materials produced by surface severe plastic deformation (S²PD) are generally owing to the effects of the refined structure, work-hardened region and compressive residual stress. However, during the S²PD process, residual stress is produced simultaneously with work-hardened region, the individual contribution of these two factors to the improved mechanical properties remains unclear. Numerical simulations are carried out in order to answer this question. It is found that work hardening predominates in improving the yield strength and the ultimate tensile strength of the surface nano-crystallized graded materials, while the influence of the residual stress mainly emerges at the initial stage of deformation and decreases the apparent elastic modulus of the surface nano-crystallized graded materials, which agrees well with the experimental results. © 2010 Elsevier B.V.

Research Area(s)

Finite element method, Residual stress, Surface nano-crystallized graded material, Work hardening

Citation Format(s)

[ RIS ] [ BibTeX ]

The main factor influencing the tensile properties of surface nano-crystallized graded materials. / Li, Jianjun; Chen, Shaohua; Wu, Xiaolei et al.
In: Materials Science and Engineering A, Vol. 527, No. 26, 10.2010, p. 7040-7044.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Li, J, Chen, S, Wu, X, Soh, A & Lu, J 2010, 'The main factor influencing the tensile properties of surface nano-crystallized graded materials', Materials Science and Engineering A, vol. 527, no. 26, pp. 7040-7044. https://doi.org/10.1016/j.msea.2010.07.064

Li, J., Chen, S., Wu, X., Soh, A., & Lu, J. (2010). The main factor influencing the tensile properties of surface nano-crystallized graded materials. Materials Science and Engineering A, 527(26), 7040-7044. https://doi.org/10.1016/j.msea.2010.07.064

Li J, Chen S, Wu X, Soh A, Lu J. The main factor influencing the tensile properties of surface nano-crystallized graded materials. Materials Science and Engineering A. 2010 Oct;527(26):7040-7044. doi: 10.1016/j.msea.2010.07.064

Li, Jianjun ; Chen, Shaohua ; Wu, Xiaolei et al. / The main factor influencing the tensile properties of surface nano-crystallized graded materials. In: Materials Science and Engineering A. 2010 ; Vol. 527, No. 26. pp. 7040-7044.