Paper Title:
Recovery in 15%Cr Ferritic Stainless Steel after Large Strain Deformation
  Abstract

15%Cr ferritic stainless steel was machined in rectangular samples and then processed by multiple forging to a total cumulative strain of 7.2 at an ambient temperature. The large strain deformation resulted in almost equiaxed submicrocrystalline structure with a mean grain/subgrain size of 230 nm and about 2.2×1014 m-2 dislocation density in grain/subgrain interiors. The annealing at a relatively low temperature of 500oC did not lead to any discontinuous recrystallizations. The grain/subgrain size and the interior dislocation density slightly changed to 240 nm and 2.1×1014 m-2, respectively, after annealing for 30 min, while the Vickers hardness decreased from 3140 MPa in the as-processed state to 2900 MPa. This annealing softening was attributed to remarkable release (by 50%) of internal stresses, which are associated with a non-equilibrium character of strain-induced grain/subgrain boundaries.

  Info
Periodical
Materials Science Forum (Volumes 558-559)
Edited by
S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara
Pages
119-124
DOI
10.4028/www.scientific.net/MSF.558-559.119
Citation
A. Belyakov, K. Tsuzaki, Y. Kimura, Y. Mishima, "Recovery in 15%Cr Ferritic Stainless Steel after Large Strain Deformation", Materials Science Forum, Vols. 558-559, pp. 119-124, 2007
Online since
October 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Dalibor Vojtěch, Alena Michalcová
Abstract:Nearly equi-atomic Ni-Ti alloys (nitinol) show shape memory behavior, superelasticity, high strength, excellent corrosion resistance and...
471
Authors: Xin Li Song, Ze Xi Yuan, Juan Jia, Li Xia Fan, Ping He Li
Abstract:The development of texture and grain boundary character are researched for a boron bearing IF steel after recrystallization annealing for...
243
Authors: N.I. Vlasova, V.S. Gaviko, A.G. Popov, N.N. Shchegoleva, L.A. Stashkova, Dmitriy Gunderov, Xavier Sauvage
Abstract:Equiatomic FePd alloy in the ordered state has been processed by means of high-pressure torsion deformation (HPTD) and then annealed. X-ray...
392
Authors: Olga Sukhopar, Günter Gottstein
Wednesday
Abstract:In the present study, a modified cellular automaton CORe (Cellular Operator for Recrystallization) was used to predict the recrystallization...
455
Authors: Wen Min Shi, Jing Liu, Chang Yi Li
Chapter 3: Iron and Steel
Abstract:The recrystallization behavior of the cold rolled 3%Si nonoriented electrical steel at different temperatures is investigated by...
678