Free surface roughening of polycrystalline austenitic stainless steels during tensile and deep drawing deformation is investigated using scanning white light interferometry. A fractal analysis method is applied to analyse the surface profile data in two directions which are perpendicular to each other. It is shown that the surface profile is fractal within the length and is on the same order of magnitude as the grain size. The Hurst exponent H of the two deformation modes in different directions stabilises at H approximate to 0.85. While the correlation lengths are different, the value in the longitudinal direction is about two times larger than the one in the transverse direction. The relationship between root mean square roughness and strain appears to be linear, and the roughening rate in tensile deformation is larger than the one in deep drawing deformation.
部门归属
[zhou, x. h.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [su, x.] ningbo univ, fac sci, ningbo 315211, peoples r china.;zhou, xh (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;xhzhou@imr.ac.cn
X. H. Zhou,X. Su. Effects of deformation mode on surface roughening of austenitic stainless steels[J]. Materials Science and Technology,2011,27(6):1040-1044.
APA
X. H. Zhou,&X. Su.(2011).Effects of deformation mode on surface roughening of austenitic stainless steels.Materials Science and Technology,27(6),1040-1044.
MLA
X. H. Zhou,et al."Effects of deformation mode on surface roughening of austenitic stainless steels".Materials Science and Technology 27.6(2011):1040-1044.
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