Abstract
The influence of the microstructure on the tensile properties and fracture behavior of Hadfield steel at high strain rate were studied. Hadfield steel samples with different mean grain sizes and carbon phases were prepared by rolling at medium temperatures and subsequent annealing. A sample with an average grain size larger than 10 lm, and a small number of carbides shows ductility with local elongation (post uniform elongation) at a highspeed tensile deformation rate of 103 s-1. In addition, the fracture surface changes from brittle to ductile with increasing strain rate. In contrast, a fine-grained sample with carbides undergoes brittle fracture at any strain rate. The grain size dependence is discussed by considering the dynamic strain aging as well as the emission of dislocation from cracks. The accelerated diffusion of carbon due to grain refinement is considered as one of the important reason for brittle fracture in the fine-grained Hadfield steel.
| Original language | English |
|---|---|
| Pages (from-to) | 7946-7953 |
| Number of pages | 8 |
| Journal | Journal of Materials Science |
| Volume | 47 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - Nov 1 2012 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
Grain size effect on high-speed deformation of Hadfield steel. / Ueji, Rintaro; Kondo, Daisuke; Takagi, Yoshinori; Mizuguchi, Takashi; Tanaka, Yasuhiro; Shinagawa, Kazunari.
In: Journal of Materials Science, Vol. 47, No. 22, 01.11.2012, p. 7946-7953.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Grain size effect on high-speed deformation of Hadfield steel
AU - Ueji, Rintaro
AU - Kondo, Daisuke
AU - Takagi, Yoshinori
AU - Mizuguchi, Takashi
AU - Tanaka, Yasuhiro
AU - Shinagawa, Kazunari
PY - 2012/11/1
Y1 - 2012/11/1
N2 - The influence of the microstructure on the tensile properties and fracture behavior of Hadfield steel at high strain rate were studied. Hadfield steel samples with different mean grain sizes and carbon phases were prepared by rolling at medium temperatures and subsequent annealing. A sample with an average grain size larger than 10 lm, and a small number of carbides shows ductility with local elongation (post uniform elongation) at a highspeed tensile deformation rate of 103 s-1. In addition, the fracture surface changes from brittle to ductile with increasing strain rate. In contrast, a fine-grained sample with carbides undergoes brittle fracture at any strain rate. The grain size dependence is discussed by considering the dynamic strain aging as well as the emission of dislocation from cracks. The accelerated diffusion of carbon due to grain refinement is considered as one of the important reason for brittle fracture in the fine-grained Hadfield steel.
AB - The influence of the microstructure on the tensile properties and fracture behavior of Hadfield steel at high strain rate were studied. Hadfield steel samples with different mean grain sizes and carbon phases were prepared by rolling at medium temperatures and subsequent annealing. A sample with an average grain size larger than 10 lm, and a small number of carbides shows ductility with local elongation (post uniform elongation) at a highspeed tensile deformation rate of 103 s-1. In addition, the fracture surface changes from brittle to ductile with increasing strain rate. In contrast, a fine-grained sample with carbides undergoes brittle fracture at any strain rate. The grain size dependence is discussed by considering the dynamic strain aging as well as the emission of dislocation from cracks. The accelerated diffusion of carbon due to grain refinement is considered as one of the important reason for brittle fracture in the fine-grained Hadfield steel.
UR - http://www.scopus.com/inward/record.url?scp=84868201493&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84868201493&partnerID=8YFLogxK
U2 - 10.1007/s10853-012-6604-y
DO - 10.1007/s10853-012-6604-y
M3 - Article
VL - 47
SP - 7946
EP - 7953
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 22
ER -